diff --git a/.github/workflows/haskell-ci.yml b/.github/workflows/haskell-ci.yml
index b038f30d..e4e04d72 100644
--- a/.github/workflows/haskell-ci.yml
+++ b/.github/workflows/haskell-ci.yml
@@ -89,6 +89,7 @@ jobs:
           mkdir -p "$HOME/.ghcup/bin"
           curl -sL https://downloads.haskell.org/ghcup/0.1.20.0/x86_64-linux-ghcup-0.1.20.0 > "$HOME/.ghcup/bin/ghcup"
           chmod a+x "$HOME/.ghcup/bin/ghcup"
+          "$HOME/.ghcup/bin/ghcup" config add-release-channel https://raw.githubusercontent.com/haskell/ghcup-metadata/master/ghcup-prereleases-0.0.7.yaml;
           "$HOME/.ghcup/bin/ghcup" install ghc "$HCVER" || (cat "$HOME"/.ghcup/logs/*.* && false)
           "$HOME/.ghcup/bin/ghcup" install cabal 3.10.2.0 || (cat "$HOME"/.ghcup/logs/*.* && false)
         env:
diff --git a/fixtures/all-versions.bash b/fixtures/all-versions.bash
index 727737b5..98349ae0 100644
--- a/fixtures/all-versions.bash
+++ b/fixtures/all-versions.bash
@@ -1,5 +1,5 @@
 # SUCCESS
-# *INFO* Generating Bash script for testing for GHC versions: 7.0.1 7.0.2 7.0.3 7.0.4 7.2.1 7.2.2 7.4.1 7.4.2 7.6.1 7.6.2 7.6.3 7.8.1 7.8.2 7.8.3 7.8.4 7.10.1 7.10.2 7.10.3 8.0.1 8.0.2 8.2.1 8.2.2 8.4.1 8.4.2 8.4.3 8.4.4 8.6.1 8.6.2 8.6.3 8.6.4 8.6.5 8.8.1 8.8.2 8.8.3 8.8.4 8.10.1 8.10.2 8.10.3 8.10.4 8.10.5 8.10.6 8.10.7 9.0.1 9.0.2 9.2.1 9.2.2 9.2.3 9.2.4 9.2.5 9.2.6 9.2.7 9.2.8 9.4.1 9.4.2 9.4.3 9.4.4 9.4.5 9.4.6 9.4.7 9.4.8 9.6.1 9.6.2 9.6.3 9.6.4 9.8.1 9.8.2 ghcjs-8.4
+# *INFO* Generating Bash script for testing for GHC versions: 7.0.1 7.0.2 7.0.3 7.0.4 7.2.1 7.2.2 7.4.1 7.4.2 7.6.1 7.6.2 7.6.3 7.8.1 7.8.2 7.8.3 7.8.4 7.10.1 7.10.2 7.10.3 8.0.1 8.0.2 8.2.1 8.2.2 8.4.1 8.4.2 8.4.3 8.4.4 8.6.1 8.6.2 8.6.3 8.6.4 8.6.5 8.8.1 8.8.2 8.8.3 8.8.4 8.10.1 8.10.2 8.10.3 8.10.4 8.10.5 8.10.6 8.10.7 9.0.1 9.0.2 9.2.1 9.2.2 9.2.3 9.2.4 9.2.5 9.2.6 9.2.7 9.2.8 9.4.1 9.4.2 9.4.3 9.4.4 9.4.5 9.4.6 9.4.7 9.4.8 9.6.1 9.6.2 9.6.3 9.6.4 9.8.1 9.8.2 9.10.1 ghcjs-8.4
 #!/bin/bash
 # shellcheck disable=SC2086,SC2016,SC2046
 # REGENDATA ["bash","all-versions.project"]
@@ -21,7 +21,7 @@ fi
 
 CFG_CABAL_STORE_CACHE=""
 CFG_CABAL_REPO_CACHE=""
-CFG_JOBS="9.8.2 9.8.1 9.6.4 9.6.3 9.6.2 9.6.1 9.4.8 9.4.7 9.4.6 9.4.5 9.4.4 9.4.3 9.4.2 9.4.1 9.2.8 9.2.7 9.2.6 9.2.5 9.2.4 9.2.3 9.2.2 9.2.1 9.0.2 9.0.1 8.10.7 8.10.6 8.10.5 8.10.4 8.10.3 8.10.2 8.10.1 8.8.4 8.8.3 8.8.2 8.8.1 8.6.5 8.6.4 8.6.3 8.6.2 8.6.1 8.4.4 8.4.3 8.4.2 8.4.1 8.2.2 8.2.1 8.0.2 8.0.1 7.10.3 7.10.2 7.10.1 7.8.4 7.8.3 7.8.2 7.8.1 7.6.3 7.6.2 7.6.1 7.4.2 7.4.1 7.2.2 7.2.1 7.0.4 7.0.3 7.0.2 7.0.1"
+CFG_JOBS="9.10.1 9.8.2 9.8.1 9.6.4 9.6.3 9.6.2 9.6.1 9.4.8 9.4.7 9.4.6 9.4.5 9.4.4 9.4.3 9.4.2 9.4.1 9.2.8 9.2.7 9.2.6 9.2.5 9.2.4 9.2.3 9.2.2 9.2.1 9.0.2 9.0.1 8.10.7 8.10.6 8.10.5 8.10.4 8.10.3 8.10.2 8.10.1 8.8.4 8.8.3 8.8.2 8.8.1 8.6.5 8.6.4 8.6.3 8.6.2 8.6.1 8.4.4 8.4.3 8.4.2 8.4.1 8.2.2 8.2.1 8.0.2 8.0.1 7.10.3 7.10.2 7.10.1 7.8.4 7.8.3 7.8.2 7.8.1 7.6.3 7.6.2 7.6.1 7.4.2 7.4.1 7.2.2 7.2.1 7.0.4 7.0.3 7.0.2 7.0.1"
 CFG_CABAL_UPDATE=false
 
 SCRIPT_NAME=$(basename "$0")
diff --git a/fixtures/all-versions.github b/fixtures/all-versions.github
index 5f067651..c9e0c383 100644
--- a/fixtures/all-versions.github
+++ b/fixtures/all-versions.github
@@ -1,5 +1,5 @@
 # SUCCESS
-# *INFO* Generating GitHub config for testing for GHC versions: 7.0.1 7.0.2 7.0.3 7.0.4 7.2.1 7.2.2 7.4.1 7.4.2 7.6.1 7.6.2 7.6.3 7.8.1 7.8.2 7.8.3 7.8.4 7.10.1 7.10.2 7.10.3 8.0.1 8.0.2 8.2.1 8.2.2 8.4.1 8.4.2 8.4.3 8.4.4 8.6.1 8.6.2 8.6.3 8.6.4 8.6.5 8.8.1 8.8.2 8.8.3 8.8.4 8.10.1 8.10.2 8.10.3 8.10.4 8.10.5 8.10.6 8.10.7 9.0.1 9.0.2 9.2.1 9.2.2 9.2.3 9.2.4 9.2.5 9.2.6 9.2.7 9.2.8 9.4.1 9.4.2 9.4.3 9.4.4 9.4.5 9.4.6 9.4.7 9.4.8 9.6.1 9.6.2 9.6.3 9.6.4 9.8.1 9.8.2 ghcjs-8.4
+# *INFO* Generating GitHub config for testing for GHC versions: 7.0.1 7.0.2 7.0.3 7.0.4 7.2.1 7.2.2 7.4.1 7.4.2 7.6.1 7.6.2 7.6.3 7.8.1 7.8.2 7.8.3 7.8.4 7.10.1 7.10.2 7.10.3 8.0.1 8.0.2 8.2.1 8.2.2 8.4.1 8.4.2 8.4.3 8.4.4 8.6.1 8.6.2 8.6.3 8.6.4 8.6.5 8.8.1 8.8.2 8.8.3 8.8.4 8.10.1 8.10.2 8.10.3 8.10.4 8.10.5 8.10.6 8.10.7 9.0.1 9.0.2 9.2.1 9.2.2 9.2.3 9.2.4 9.2.5 9.2.6 9.2.7 9.2.8 9.4.1 9.4.2 9.4.3 9.4.4 9.4.5 9.4.6 9.4.7 9.4.8 9.6.1 9.6.2 9.6.3 9.6.4 9.8.1 9.8.2 9.10.1 ghcjs-8.4
 # This GitHub workflow config has been generated by a script via
 #
 #   haskell-ci 'github' 'all-versions.project'
@@ -33,6 +33,11 @@ jobs:
             compilerVersion: "8.4"
             setup-method: hvr-ppa
             allow-failure: false
+          - compiler: ghc-9.10.0.20240313
+            compilerKind: ghc
+            compilerVersion: 9.10.0.20240313
+            setup-method: ghcup
+            allow-failure: false
           - compiler: ghc-9.8.2
             compilerKind: ghc
             compilerVersion: 9.8.2
@@ -386,6 +391,7 @@ jobs:
             mkdir -p "$HOME/.ghcup/bin"
             curl -sL https://downloads.haskell.org/ghcup/0.1.20.0/x86_64-linux-ghcup-0.1.20.0 > "$HOME/.ghcup/bin/ghcup"
             chmod a+x "$HOME/.ghcup/bin/ghcup"
+            "$HOME/.ghcup/bin/ghcup" config add-release-channel https://raw.githubusercontent.com/haskell/ghcup-metadata/master/ghcup-prereleases-0.0.7.yaml;
             "$HOME/.ghcup/bin/ghcup" install ghc "$HCVER" || (cat "$HOME"/.ghcup/logs/*.* && false)
             "$HOME/.ghcup/bin/ghcup" install cabal 3.10.2.0 || (cat "$HOME"/.ghcup/logs/*.* && false)
           else
@@ -398,6 +404,7 @@ jobs:
             mkdir -p "$HOME/.ghcup/bin"
             curl -sL https://downloads.haskell.org/ghcup/0.1.20.0/x86_64-linux-ghcup-0.1.20.0 > "$HOME/.ghcup/bin/ghcup"
             chmod a+x "$HOME/.ghcup/bin/ghcup"
+            "$HOME/.ghcup/bin/ghcup" config add-release-channel https://raw.githubusercontent.com/haskell/ghcup-metadata/master/ghcup-prereleases-0.0.7.yaml;
             "$HOME/.ghcup/bin/ghcup" install cabal 3.10.2.0 || (cat "$HOME"/.ghcup/logs/*.* && false)
           fi
         env:
@@ -432,7 +439,7 @@ jobs:
           echo "HCNUMVER=$HCNUMVER" >> "$GITHUB_ENV"
           echo "ARG_TESTS=--enable-tests" >> "$GITHUB_ENV"
           echo "ARG_BENCH=--enable-benchmarks" >> "$GITHUB_ENV"
-          echo "HEADHACKAGE=false" >> "$GITHUB_ENV"
+          if [ $((! GHCJSARITH && HCNUMVER >= 91000)) -ne 0 ] ; then echo "HEADHACKAGE=true" >> "$GITHUB_ENV" ; else echo "HEADHACKAGE=false" >> "$GITHUB_ENV" ; fi
           echo "ARG_COMPILER=--$HCKIND --with-compiler=$HC" >> "$GITHUB_ENV"
         env:
           HCKIND: ${{ matrix.compilerKind }}
@@ -460,6 +467,18 @@ jobs:
           repository hackage.haskell.org
             url: http://hackage.haskell.org/
           EOF
+          if $HEADHACKAGE; then
+          cat >> $CABAL_CONFIG <<EOF
+          repository head.hackage.ghc.haskell.org
+             url: https://ghc.gitlab.haskell.org/head.hackage/
+             secure: True
+             root-keys: 7541f32a4ccca4f97aea3b22f5e593ba2c0267546016b992dfadcd2fe944e55d
+                        26021a13b401500c8eb2761ca95c61f2d625bfef951b939a8124ed12ecf07329
+                        f76d08be13e9a61a377a85e2fb63f4c5435d40f8feb3e12eb05905edb8cdea89
+             key-threshold: 3
+          active-repositories: hackage.haskell.org, head.hackage.ghc.haskell.org:override
+          EOF
+          fi
           cat >> $CABAL_CONFIG <<EOF
           program-default-options
             ghc-options: $GHCJOBS +RTS -M3G -RTS
@@ -513,6 +532,9 @@ jobs:
           if [ $((GHCJSARITH || ! GHCJSARITH && HCNUMVER >= 80200)) -ne 0 ] ; then echo "    ghc-options: -Werror=missing-methods" >> cabal.project ; fi
           cat >> cabal.project <<EOF
           EOF
+          if $HEADHACKAGE; then
+          echo "allow-newer: $($HCPKG list --simple-output | sed -E 's/([a-zA-Z-]+)-[0-9.]+/*:\1,/g')" >> cabal.project
+          fi
           $HCPKG list --simple-output --names-only | perl -ne 'for (split /\s+/) { print "constraints: $_ installed\n" unless /^(splitmix)$/; }' >> cabal.project.local
           cat cabal.project
           cat cabal.project.local
diff --git a/fixtures/all-versions.travis b/fixtures/all-versions.travis
index be295bc4..96e47703 100644
--- a/fixtures/all-versions.travis
+++ b/fixtures/all-versions.travis
@@ -1,5 +1,5 @@
 # SUCCESS
-# *INFO* Generating Travis-CI config for testing for GHC versions: 7.0.1 7.0.2 7.0.3 7.0.4 7.2.1 7.2.2 7.4.1 7.4.2 7.6.1 7.6.2 7.6.3 7.8.1 7.8.2 7.8.3 7.8.4 7.10.1 7.10.2 7.10.3 8.0.1 8.0.2 8.2.1 8.2.2 8.4.1 8.4.2 8.4.3 8.4.4 8.6.1 8.6.2 8.6.3 8.6.4 8.6.5 8.8.1 8.8.2 8.8.3 8.8.4 8.10.1 8.10.2 8.10.3 8.10.4 8.10.5 8.10.6 8.10.7 9.0.1 9.0.2 9.2.1 9.2.2 9.2.3 9.2.4 9.2.5 9.2.6 9.2.7 9.2.8 9.4.1 9.4.2 9.4.3 9.4.4 9.4.5 9.4.6 9.4.7 9.4.8 9.6.1 9.6.2 9.6.3 9.6.4 9.8.1 9.8.2 ghcjs-8.4
+# *INFO* Generating Travis-CI config for testing for GHC versions: 7.0.1 7.0.2 7.0.3 7.0.4 7.2.1 7.2.2 7.4.1 7.4.2 7.6.1 7.6.2 7.6.3 7.8.1 7.8.2 7.8.3 7.8.4 7.10.1 7.10.2 7.10.3 8.0.1 8.0.2 8.2.1 8.2.2 8.4.1 8.4.2 8.4.3 8.4.4 8.6.1 8.6.2 8.6.3 8.6.4 8.6.5 8.8.1 8.8.2 8.8.3 8.8.4 8.10.1 8.10.2 8.10.3 8.10.4 8.10.5 8.10.6 8.10.7 9.0.1 9.0.2 9.2.1 9.2.2 9.2.3 9.2.4 9.2.5 9.2.6 9.2.7 9.2.8 9.4.1 9.4.2 9.4.3 9.4.4 9.4.5 9.4.6 9.4.7 9.4.8 9.6.1 9.6.2 9.6.3 9.6.4 9.8.1 9.8.2 9.10.1 ghcjs-8.4
 # This Travis job script has been generated by a script via
 #
 #   haskell-ci 'travis' 'all-versions.project'
@@ -36,6 +36,9 @@ jobs:
     - compiler: ghcjs-8.4
       addons: {"apt":{"packages":["ghcjs-8.4","cabal-install-3.4","ghc-8.4.4","nodejs"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"},{"sourceline":"deb http://ppa.launchpad.net/hvr/ghcjs/ubuntu bionic main"},{"key_url":"https://deb.nodesource.com/gpgkey/nodesource.gpg.key","sourceline":"deb https://deb.nodesource.com/node_10.x bionic main"}]}}
       os: linux
+    - compiler: ghc-9.10.1
+      addons: {"apt":{"packages":["ghc-9.10.1","cabal-install-3.10"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
     - compiler: ghc-9.8.2
       addons: {"apt":{"packages":["ghc-9.8.2","cabal-install-3.10"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
       os: linux
@@ -260,6 +263,7 @@ before_install:
   - TEST=--enable-tests
   - BENCH=--enable-benchmarks
   - HEADHACKAGE=false
+  - if [ $((! GHCJSARITH && HCNUMVER >= 91000)) -ne 0 ] ; then HEADHACKAGE=true ; fi
   - rm -f $CABALHOME/config
   - |
     echo "verbose: normal +nowrap +markoutput"          >> $CABALHOME/config
@@ -277,6 +281,17 @@ before_install:
     echo "  prefix: $CABALHOME"                         >> $CABALHOME/config
     echo "repository hackage.haskell.org"               >> $CABALHOME/config
     echo "  url: http://hackage.haskell.org/"           >> $CABALHOME/config
+  - |
+    if $HEADHACKAGE; then
+    echo "repository head.hackage.ghc.haskell.org"                                         >> $CABALHOME/config
+    echo "   url: https://ghc.gitlab.haskell.org/head.hackage/"                            >> $CABALHOME/config
+    echo "   secure: True"                                                                 >> $CABALHOME/config
+    echo "   root-keys: 7541f32a4ccca4f97aea3b22f5e593ba2c0267546016b992dfadcd2fe944e55d"  >> $CABALHOME/config
+    echo "              26021a13b401500c8eb2761ca95c61f2d625bfef951b939a8124ed12ecf07329"  >> $CABALHOME/config
+    echo "              f76d08be13e9a61a377a85e2fb63f4c5435d40f8feb3e12eb05905edb8cdea89"  >> $CABALHOME/config
+    echo "   key-threshold: 3"                                                             >> $CABALHOME/config
+    echo "active-repositories: hackage.haskell.org, head.hackage.ghc.haskell.org:override" >> $CABALHOME/config
+    fi
 install:
   - ${CABAL} --version
   - echo "$(${HC} --version) [$(${HC} --print-project-git-commit-id 2> /dev/null || echo '?')]"
@@ -296,6 +311,10 @@ install:
   - if [ $((GHCJSARITH || ! GHCJSARITH && HCNUMVER >= 80200)) -ne 0 ] ; then echo 'package splitmix' >> cabal.project ; fi
   - "if [ $((GHCJSARITH || ! GHCJSARITH && HCNUMVER >= 80200)) -ne 0 ] ; then echo '  ghc-options: -Werror=missing-methods' >> cabal.project ; fi"
   - ""
+  - |
+    if $HEADHACKAGE; then
+    echo "allow-newer: $($HCPKG list --simple-output | sed -E 's/([a-zA-Z-]+)-[0-9.]+/*:\1,/g')" >> $CABALHOME/config
+    fi
   - "for pkg in $($HCPKG list --simple-output); do echo $pkg | sed 's/-[^-]*$//' | (grep -vE -- '^(splitmix)$' || true) | sed 's/^/constraints: /' | sed 's/$/ installed/' >> cabal.project.local; done"
   - cat cabal.project || true
   - cat cabal.project.local || true
@@ -323,6 +342,10 @@ script:
   - if [ $((GHCJSARITH || ! GHCJSARITH && HCNUMVER >= 80200)) -ne 0 ] ; then echo 'package splitmix' >> cabal.project ; fi
   - "if [ $((GHCJSARITH || ! GHCJSARITH && HCNUMVER >= 80200)) -ne 0 ] ; then echo '  ghc-options: -Werror=missing-methods' >> cabal.project ; fi"
   - ""
+  - |
+    if $HEADHACKAGE; then
+    echo "allow-newer: $($HCPKG list --simple-output | sed -E 's/([a-zA-Z-]+)-[0-9.]+/*:\1,/g')" >> $CABALHOME/config
+    fi
   - "for pkg in $($HCPKG list --simple-output); do echo $pkg | sed 's/-[^-]*$//' | (grep -vE -- '^(splitmix)$' || true) | sed 's/^/constraints: /' | sed 's/$/ installed/' >> cabal.project.local; done"
   - cat cabal.project || true
   - cat cabal.project.local || true
diff --git a/fixtures/copy-fields-all.github b/fixtures/copy-fields-all.github
index c3c3364f..40035257 100644
--- a/fixtures/copy-fields-all.github
+++ b/fixtures/copy-fields-all.github
@@ -193,6 +193,7 @@ jobs:
             mkdir -p "$HOME/.ghcup/bin"
             curl -sL https://downloads.haskell.org/ghcup/0.1.20.0/x86_64-linux-ghcup-0.1.20.0 > "$HOME/.ghcup/bin/ghcup"
             chmod a+x "$HOME/.ghcup/bin/ghcup"
+            "$HOME/.ghcup/bin/ghcup" config add-release-channel https://raw.githubusercontent.com/haskell/ghcup-metadata/master/ghcup-prereleases-0.0.7.yaml;
             "$HOME/.ghcup/bin/ghcup" install ghc "$HCVER" || (cat "$HOME"/.ghcup/logs/*.* && false)
             "$HOME/.ghcup/bin/ghcup" install cabal 3.10.2.0 || (cat "$HOME"/.ghcup/logs/*.* && false)
           else
@@ -202,6 +203,7 @@ jobs:
             mkdir -p "$HOME/.ghcup/bin"
             curl -sL https://downloads.haskell.org/ghcup/0.1.20.0/x86_64-linux-ghcup-0.1.20.0 > "$HOME/.ghcup/bin/ghcup"
             chmod a+x "$HOME/.ghcup/bin/ghcup"
+            "$HOME/.ghcup/bin/ghcup" config add-release-channel https://raw.githubusercontent.com/haskell/ghcup-metadata/master/ghcup-prereleases-0.0.7.yaml;
             "$HOME/.ghcup/bin/ghcup" install cabal 3.10.2.0 || (cat "$HOME"/.ghcup/logs/*.* && false)
           fi
         env:
diff --git a/fixtures/copy-fields-none.github b/fixtures/copy-fields-none.github
index 0b81d8de..f70614cc 100644
--- a/fixtures/copy-fields-none.github
+++ b/fixtures/copy-fields-none.github
@@ -193,6 +193,7 @@ jobs:
             mkdir -p "$HOME/.ghcup/bin"
             curl -sL https://downloads.haskell.org/ghcup/0.1.20.0/x86_64-linux-ghcup-0.1.20.0 > "$HOME/.ghcup/bin/ghcup"
             chmod a+x "$HOME/.ghcup/bin/ghcup"
+            "$HOME/.ghcup/bin/ghcup" config add-release-channel https://raw.githubusercontent.com/haskell/ghcup-metadata/master/ghcup-prereleases-0.0.7.yaml;
             "$HOME/.ghcup/bin/ghcup" install ghc "$HCVER" || (cat "$HOME"/.ghcup/logs/*.* && false)
             "$HOME/.ghcup/bin/ghcup" install cabal 3.10.2.0 || (cat "$HOME"/.ghcup/logs/*.* && false)
           else
@@ -202,6 +203,7 @@ jobs:
             mkdir -p "$HOME/.ghcup/bin"
             curl -sL https://downloads.haskell.org/ghcup/0.1.20.0/x86_64-linux-ghcup-0.1.20.0 > "$HOME/.ghcup/bin/ghcup"
             chmod a+x "$HOME/.ghcup/bin/ghcup"
+            "$HOME/.ghcup/bin/ghcup" config add-release-channel https://raw.githubusercontent.com/haskell/ghcup-metadata/master/ghcup-prereleases-0.0.7.yaml;
             "$HOME/.ghcup/bin/ghcup" install cabal 3.10.2.0 || (cat "$HOME"/.ghcup/logs/*.* && false)
           fi
         env:
diff --git a/fixtures/copy-fields-some.github b/fixtures/copy-fields-some.github
index f9050b0d..b0f7ed4b 100644
--- a/fixtures/copy-fields-some.github
+++ b/fixtures/copy-fields-some.github
@@ -193,6 +193,7 @@ jobs:
             mkdir -p "$HOME/.ghcup/bin"
             curl -sL https://downloads.haskell.org/ghcup/0.1.20.0/x86_64-linux-ghcup-0.1.20.0 > "$HOME/.ghcup/bin/ghcup"
             chmod a+x "$HOME/.ghcup/bin/ghcup"
+            "$HOME/.ghcup/bin/ghcup" config add-release-channel https://raw.githubusercontent.com/haskell/ghcup-metadata/master/ghcup-prereleases-0.0.7.yaml;
             "$HOME/.ghcup/bin/ghcup" install ghc "$HCVER" || (cat "$HOME"/.ghcup/logs/*.* && false)
             "$HOME/.ghcup/bin/ghcup" install cabal 3.10.2.0 || (cat "$HOME"/.ghcup/logs/*.* && false)
           else
@@ -202,6 +203,7 @@ jobs:
             mkdir -p "$HOME/.ghcup/bin"
             curl -sL https://downloads.haskell.org/ghcup/0.1.20.0/x86_64-linux-ghcup-0.1.20.0 > "$HOME/.ghcup/bin/ghcup"
             chmod a+x "$HOME/.ghcup/bin/ghcup"
+            "$HOME/.ghcup/bin/ghcup" config add-release-channel https://raw.githubusercontent.com/haskell/ghcup-metadata/master/ghcup-prereleases-0.0.7.yaml;
             "$HOME/.ghcup/bin/ghcup" install cabal 3.10.2.0 || (cat "$HOME"/.ghcup/logs/*.* && false)
           fi
         env:
diff --git a/fixtures/enabled-jobs.bash b/fixtures/enabled-jobs.bash
index 175727b2..be240233 100644
--- a/fixtures/enabled-jobs.bash
+++ b/fixtures/enabled-jobs.bash
@@ -1,5 +1,5 @@
 # SUCCESS
-# *INFO* Generating Bash script for testing for GHC versions: 8.0.1 8.0.2 8.2.1 8.2.2 8.4.1 8.4.2 8.4.3 8.4.4 8.6.1 8.6.2 8.6.3 8.6.4 8.6.5 8.8.1 8.8.2 8.8.3 8.8.4 8.10.1 8.10.2 8.10.3 8.10.4 8.10.5 8.10.6 8.10.7 9.0.1 9.0.2 9.2.1 9.2.2 9.2.3 9.2.4 9.2.5 9.2.6 9.2.7 9.2.8 9.4.1 9.4.2 9.4.3 9.4.4 9.4.5 9.4.6 9.4.7 9.4.8 9.6.1 9.6.2 9.6.3 9.6.4 9.8.1 9.8.2 ghcjs-8.4
+# *INFO* Generating Bash script for testing for GHC versions: 8.0.1 8.0.2 8.2.1 8.2.2 8.4.1 8.4.2 8.4.3 8.4.4 8.6.1 8.6.2 8.6.3 8.6.4 8.6.5 8.8.1 8.8.2 8.8.3 8.8.4 8.10.1 8.10.2 8.10.3 8.10.4 8.10.5 8.10.6 8.10.7 9.0.1 9.0.2 9.2.1 9.2.2 9.2.3 9.2.4 9.2.5 9.2.6 9.2.7 9.2.8 9.4.1 9.4.2 9.4.3 9.4.4 9.4.5 9.4.6 9.4.7 9.4.8 9.6.1 9.6.2 9.6.3 9.6.4 9.8.1 9.8.2 9.10.1 ghcjs-8.4
 #!/bin/bash
 # shellcheck disable=SC2086,SC2016,SC2046
 # REGENDATA ["--enabled-jobs=>=8","bash","enabled-jobs.project"]
@@ -21,7 +21,7 @@ fi
 
 CFG_CABAL_STORE_CACHE=""
 CFG_CABAL_REPO_CACHE=""
-CFG_JOBS="9.8.2 9.8.1 9.6.4 9.6.3 9.6.2 9.6.1 9.4.8 9.4.7 9.4.6 9.4.5 9.4.4 9.4.3 9.4.2 9.4.1 9.2.8 9.2.7 9.2.6 9.2.5 9.2.4 9.2.3 9.2.2 9.2.1 9.0.2 9.0.1 8.10.7 8.10.6 8.10.5 8.10.4 8.10.3 8.10.2 8.10.1 8.8.4 8.8.3 8.8.2 8.8.1 8.6.5 8.6.4 8.6.3 8.6.2 8.6.1 8.4.4 8.4.3 8.4.2 8.4.1 8.2.2 8.2.1 8.0.2 8.0.1"
+CFG_JOBS="9.10.1 9.8.2 9.8.1 9.6.4 9.6.3 9.6.2 9.6.1 9.4.8 9.4.7 9.4.6 9.4.5 9.4.4 9.4.3 9.4.2 9.4.1 9.2.8 9.2.7 9.2.6 9.2.5 9.2.4 9.2.3 9.2.2 9.2.1 9.0.2 9.0.1 8.10.7 8.10.6 8.10.5 8.10.4 8.10.3 8.10.2 8.10.1 8.8.4 8.8.3 8.8.2 8.8.1 8.6.5 8.6.4 8.6.3 8.6.2 8.6.1 8.4.4 8.4.3 8.4.2 8.4.1 8.2.2 8.2.1 8.0.2 8.0.1"
 CFG_CABAL_UPDATE=false
 
 SCRIPT_NAME=$(basename "$0")
diff --git a/fixtures/enabled-jobs.github b/fixtures/enabled-jobs.github
index f826d255..75ffd5c5 100644
--- a/fixtures/enabled-jobs.github
+++ b/fixtures/enabled-jobs.github
@@ -1,5 +1,5 @@
 # SUCCESS
-# *INFO* Generating GitHub config for testing for GHC versions: 8.0.1 8.0.2 8.2.1 8.2.2 8.4.1 8.4.2 8.4.3 8.4.4 8.6.1 8.6.2 8.6.3 8.6.4 8.6.5 8.8.1 8.8.2 8.8.3 8.8.4 8.10.1 8.10.2 8.10.3 8.10.4 8.10.5 8.10.6 8.10.7 9.0.1 9.0.2 9.2.1 9.2.2 9.2.3 9.2.4 9.2.5 9.2.6 9.2.7 9.2.8 9.4.1 9.4.2 9.4.3 9.4.4 9.4.5 9.4.6 9.4.7 9.4.8 9.6.1 9.6.2 9.6.3 9.6.4 9.8.1 9.8.2 ghcjs-8.4
+# *INFO* Generating GitHub config for testing for GHC versions: 8.0.1 8.0.2 8.2.1 8.2.2 8.4.1 8.4.2 8.4.3 8.4.4 8.6.1 8.6.2 8.6.3 8.6.4 8.6.5 8.8.1 8.8.2 8.8.3 8.8.4 8.10.1 8.10.2 8.10.3 8.10.4 8.10.5 8.10.6 8.10.7 9.0.1 9.0.2 9.2.1 9.2.2 9.2.3 9.2.4 9.2.5 9.2.6 9.2.7 9.2.8 9.4.1 9.4.2 9.4.3 9.4.4 9.4.5 9.4.6 9.4.7 9.4.8 9.6.1 9.6.2 9.6.3 9.6.4 9.8.1 9.8.2 9.10.1 ghcjs-8.4
 # This GitHub workflow config has been generated by a script via
 #
 #   haskell-ci '--enabled-jobs=>=8' 'github' 'enabled-jobs.project'
@@ -33,6 +33,11 @@ jobs:
             compilerVersion: "8.4"
             setup-method: hvr-ppa
             allow-failure: false
+          - compiler: ghc-9.10.0.20240313
+            compilerKind: ghc
+            compilerVersion: 9.10.0.20240313
+            setup-method: ghcup
+            allow-failure: false
           - compiler: ghc-9.8.2
             compilerKind: ghc
             compilerVersion: 9.8.2
@@ -296,6 +301,7 @@ jobs:
             mkdir -p "$HOME/.ghcup/bin"
             curl -sL https://downloads.haskell.org/ghcup/0.1.20.0/x86_64-linux-ghcup-0.1.20.0 > "$HOME/.ghcup/bin/ghcup"
             chmod a+x "$HOME/.ghcup/bin/ghcup"
+            "$HOME/.ghcup/bin/ghcup" config add-release-channel https://raw.githubusercontent.com/haskell/ghcup-metadata/master/ghcup-prereleases-0.0.7.yaml;
             "$HOME/.ghcup/bin/ghcup" install ghc "$HCVER" || (cat "$HOME"/.ghcup/logs/*.* && false)
             "$HOME/.ghcup/bin/ghcup" install cabal 3.10.2.0 || (cat "$HOME"/.ghcup/logs/*.* && false)
           else
@@ -308,6 +314,7 @@ jobs:
             mkdir -p "$HOME/.ghcup/bin"
             curl -sL https://downloads.haskell.org/ghcup/0.1.20.0/x86_64-linux-ghcup-0.1.20.0 > "$HOME/.ghcup/bin/ghcup"
             chmod a+x "$HOME/.ghcup/bin/ghcup"
+            "$HOME/.ghcup/bin/ghcup" config add-release-channel https://raw.githubusercontent.com/haskell/ghcup-metadata/master/ghcup-prereleases-0.0.7.yaml;
             "$HOME/.ghcup/bin/ghcup" install cabal 3.10.2.0 || (cat "$HOME"/.ghcup/logs/*.* && false)
           fi
         env:
@@ -342,7 +349,7 @@ jobs:
           echo "HCNUMVER=$HCNUMVER" >> "$GITHUB_ENV"
           echo "ARG_TESTS=--enable-tests" >> "$GITHUB_ENV"
           echo "ARG_BENCH=--enable-benchmarks" >> "$GITHUB_ENV"
-          echo "HEADHACKAGE=false" >> "$GITHUB_ENV"
+          if [ $((! GHCJSARITH && HCNUMVER >= 91000)) -ne 0 ] ; then echo "HEADHACKAGE=true" >> "$GITHUB_ENV" ; else echo "HEADHACKAGE=false" >> "$GITHUB_ENV" ; fi
           echo "ARG_COMPILER=--$HCKIND --with-compiler=$HC" >> "$GITHUB_ENV"
         env:
           HCKIND: ${{ matrix.compilerKind }}
@@ -370,6 +377,18 @@ jobs:
           repository hackage.haskell.org
             url: http://hackage.haskell.org/
           EOF
+          if $HEADHACKAGE; then
+          cat >> $CABAL_CONFIG <<EOF
+          repository head.hackage.ghc.haskell.org
+             url: https://ghc.gitlab.haskell.org/head.hackage/
+             secure: True
+             root-keys: 7541f32a4ccca4f97aea3b22f5e593ba2c0267546016b992dfadcd2fe944e55d
+                        26021a13b401500c8eb2761ca95c61f2d625bfef951b939a8124ed12ecf07329
+                        f76d08be13e9a61a377a85e2fb63f4c5435d40f8feb3e12eb05905edb8cdea89
+             key-threshold: 3
+          active-repositories: hackage.haskell.org, head.hackage.ghc.haskell.org:override
+          EOF
+          fi
           cat >> $CABAL_CONFIG <<EOF
           program-default-options
             ghc-options: $GHCJOBS +RTS -M3G -RTS
@@ -423,6 +442,9 @@ jobs:
           if [ $((GHCJSARITH || ! GHCJSARITH && HCNUMVER >= 80200)) -ne 0 ] ; then echo "    ghc-options: -Werror=missing-methods" >> cabal.project ; fi
           cat >> cabal.project <<EOF
           EOF
+          if $HEADHACKAGE; then
+          echo "allow-newer: $($HCPKG list --simple-output | sed -E 's/([a-zA-Z-]+)-[0-9.]+/*:\1,/g')" >> cabal.project
+          fi
           $HCPKG list --simple-output --names-only | perl -ne 'for (split /\s+/) { print "constraints: $_ installed\n" unless /^(splitmix)$/; }' >> cabal.project.local
           cat cabal.project
           cat cabal.project.local
diff --git a/fixtures/enabled-jobs.travis b/fixtures/enabled-jobs.travis
index 91f22b39..cfb34e93 100644
--- a/fixtures/enabled-jobs.travis
+++ b/fixtures/enabled-jobs.travis
@@ -1,5 +1,5 @@
 # SUCCESS
-# *INFO* Generating Travis-CI config for testing for GHC versions: 8.0.1 8.0.2 8.2.1 8.2.2 8.4.1 8.4.2 8.4.3 8.4.4 8.6.1 8.6.2 8.6.3 8.6.4 8.6.5 8.8.1 8.8.2 8.8.3 8.8.4 8.10.1 8.10.2 8.10.3 8.10.4 8.10.5 8.10.6 8.10.7 9.0.1 9.0.2 9.2.1 9.2.2 9.2.3 9.2.4 9.2.5 9.2.6 9.2.7 9.2.8 9.4.1 9.4.2 9.4.3 9.4.4 9.4.5 9.4.6 9.4.7 9.4.8 9.6.1 9.6.2 9.6.3 9.6.4 9.8.1 9.8.2 ghcjs-8.4
+# *INFO* Generating Travis-CI config for testing for GHC versions: 8.0.1 8.0.2 8.2.1 8.2.2 8.4.1 8.4.2 8.4.3 8.4.4 8.6.1 8.6.2 8.6.3 8.6.4 8.6.5 8.8.1 8.8.2 8.8.3 8.8.4 8.10.1 8.10.2 8.10.3 8.10.4 8.10.5 8.10.6 8.10.7 9.0.1 9.0.2 9.2.1 9.2.2 9.2.3 9.2.4 9.2.5 9.2.6 9.2.7 9.2.8 9.4.1 9.4.2 9.4.3 9.4.4 9.4.5 9.4.6 9.4.7 9.4.8 9.6.1 9.6.2 9.6.3 9.6.4 9.8.1 9.8.2 9.10.1 ghcjs-8.4
 # This Travis job script has been generated by a script via
 #
 #   haskell-ci '--enabled-jobs=>=8' 'travis' 'enabled-jobs.project'
@@ -36,6 +36,9 @@ jobs:
     - compiler: ghcjs-8.4
       addons: {"apt":{"packages":["ghcjs-8.4","cabal-install-3.4","ghc-8.4.4","nodejs"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"},{"sourceline":"deb http://ppa.launchpad.net/hvr/ghcjs/ubuntu bionic main"},{"key_url":"https://deb.nodesource.com/gpgkey/nodesource.gpg.key","sourceline":"deb https://deb.nodesource.com/node_10.x bionic main"}]}}
       os: linux
+    - compiler: ghc-9.10.1
+      addons: {"apt":{"packages":["ghc-9.10.1","cabal-install-3.10"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
+      os: linux
     - compiler: ghc-9.8.2
       addons: {"apt":{"packages":["ghc-9.8.2","cabal-install-3.10"],"sources":[{"key_url":"https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x063dab2bdc0b3f9fcebc378bff3aeacef6f88286","sourceline":"deb http://ppa.launchpad.net/hvr/ghc/ubuntu bionic main"}]}}
       os: linux
@@ -206,6 +209,7 @@ before_install:
   - TEST=--enable-tests
   - BENCH=--enable-benchmarks
   - HEADHACKAGE=false
+  - if [ $((! GHCJSARITH && HCNUMVER >= 91000)) -ne 0 ] ; then HEADHACKAGE=true ; fi
   - rm -f $CABALHOME/config
   - |
     echo "verbose: normal +nowrap +markoutput"          >> $CABALHOME/config
@@ -223,6 +227,17 @@ before_install:
     echo "  prefix: $CABALHOME"                         >> $CABALHOME/config
     echo "repository hackage.haskell.org"               >> $CABALHOME/config
     echo "  url: http://hackage.haskell.org/"           >> $CABALHOME/config
+  - |
+    if $HEADHACKAGE; then
+    echo "repository head.hackage.ghc.haskell.org"                                         >> $CABALHOME/config
+    echo "   url: https://ghc.gitlab.haskell.org/head.hackage/"                            >> $CABALHOME/config
+    echo "   secure: True"                                                                 >> $CABALHOME/config
+    echo "   root-keys: 7541f32a4ccca4f97aea3b22f5e593ba2c0267546016b992dfadcd2fe944e55d"  >> $CABALHOME/config
+    echo "              26021a13b401500c8eb2761ca95c61f2d625bfef951b939a8124ed12ecf07329"  >> $CABALHOME/config
+    echo "              f76d08be13e9a61a377a85e2fb63f4c5435d40f8feb3e12eb05905edb8cdea89"  >> $CABALHOME/config
+    echo "   key-threshold: 3"                                                             >> $CABALHOME/config
+    echo "active-repositories: hackage.haskell.org, head.hackage.ghc.haskell.org:override" >> $CABALHOME/config
+    fi
 install:
   - ${CABAL} --version
   - echo "$(${HC} --version) [$(${HC} --print-project-git-commit-id 2> /dev/null || echo '?')]"
@@ -242,6 +257,10 @@ install:
   - if [ $((GHCJSARITH || ! GHCJSARITH && HCNUMVER >= 80200)) -ne 0 ] ; then echo 'package splitmix' >> cabal.project ; fi
   - "if [ $((GHCJSARITH || ! GHCJSARITH && HCNUMVER >= 80200)) -ne 0 ] ; then echo '  ghc-options: -Werror=missing-methods' >> cabal.project ; fi"
   - ""
+  - |
+    if $HEADHACKAGE; then
+    echo "allow-newer: $($HCPKG list --simple-output | sed -E 's/([a-zA-Z-]+)-[0-9.]+/*:\1,/g')" >> $CABALHOME/config
+    fi
   - "for pkg in $($HCPKG list --simple-output); do echo $pkg | sed 's/-[^-]*$//' | (grep -vE -- '^(splitmix)$' || true) | sed 's/^/constraints: /' | sed 's/$/ installed/' >> cabal.project.local; done"
   - cat cabal.project || true
   - cat cabal.project.local || true
@@ -269,6 +288,10 @@ script:
   - if [ $((GHCJSARITH || ! GHCJSARITH && HCNUMVER >= 80200)) -ne 0 ] ; then echo 'package splitmix' >> cabal.project ; fi
   - "if [ $((GHCJSARITH || ! GHCJSARITH && HCNUMVER >= 80200)) -ne 0 ] ; then echo '  ghc-options: -Werror=missing-methods' >> cabal.project ; fi"
   - ""
+  - |
+    if $HEADHACKAGE; then
+    echo "allow-newer: $($HCPKG list --simple-output | sed -E 's/([a-zA-Z-]+)-[0-9.]+/*:\1,/g')" >> $CABALHOME/config
+    fi
   - "for pkg in $($HCPKG list --simple-output); do echo $pkg | sed 's/-[^-]*$//' | (grep -vE -- '^(splitmix)$' || true) | sed 's/^/constraints: /' | sed 's/$/ installed/' >> cabal.project.local; done"
   - cat cabal.project || true
   - cat cabal.project.local || true
diff --git a/fixtures/irc-channels.github b/fixtures/irc-channels.github
index 8e1a9f4c..da61375b 100644
--- a/fixtures/irc-channels.github
+++ b/fixtures/irc-channels.github
@@ -220,6 +220,7 @@ jobs:
             mkdir -p "$HOME/.ghcup/bin"
             curl -sL https://downloads.haskell.org/ghcup/0.1.20.0/x86_64-linux-ghcup-0.1.20.0 > "$HOME/.ghcup/bin/ghcup"
             chmod a+x "$HOME/.ghcup/bin/ghcup"
+            "$HOME/.ghcup/bin/ghcup" config add-release-channel https://raw.githubusercontent.com/haskell/ghcup-metadata/master/ghcup-prereleases-0.0.7.yaml;
             "$HOME/.ghcup/bin/ghcup" install ghc "$HCVER" || (cat "$HOME"/.ghcup/logs/*.* && false)
             "$HOME/.ghcup/bin/ghcup" install cabal 3.10.2.0 || (cat "$HOME"/.ghcup/logs/*.* && false)
           else
@@ -229,6 +230,7 @@ jobs:
             mkdir -p "$HOME/.ghcup/bin"
             curl -sL https://downloads.haskell.org/ghcup/0.1.20.0/x86_64-linux-ghcup-0.1.20.0 > "$HOME/.ghcup/bin/ghcup"
             chmod a+x "$HOME/.ghcup/bin/ghcup"
+            "$HOME/.ghcup/bin/ghcup" config add-release-channel https://raw.githubusercontent.com/haskell/ghcup-metadata/master/ghcup-prereleases-0.0.7.yaml;
             "$HOME/.ghcup/bin/ghcup" install cabal 3.10.2.0 || (cat "$HOME"/.ghcup/logs/*.* && false)
           fi
         env:
diff --git a/fixtures/psql.github b/fixtures/psql.github
index e46d480d..386aa83f 100644
--- a/fixtures/psql.github
+++ b/fixtures/psql.github
@@ -199,6 +199,7 @@ jobs:
             mkdir -p "$HOME/.ghcup/bin"
             curl -sL https://downloads.haskell.org/ghcup/0.1.20.0/x86_64-linux-ghcup-0.1.20.0 > "$HOME/.ghcup/bin/ghcup"
             chmod a+x "$HOME/.ghcup/bin/ghcup"
+            "$HOME/.ghcup/bin/ghcup" config add-release-channel https://raw.githubusercontent.com/haskell/ghcup-metadata/master/ghcup-prereleases-0.0.7.yaml;
             "$HOME/.ghcup/bin/ghcup" install ghc "$HCVER" || (cat "$HOME"/.ghcup/logs/*.* && false)
             "$HOME/.ghcup/bin/ghcup" install cabal 3.10.2.0 || (cat "$HOME"/.ghcup/logs/*.* && false)
           else
@@ -208,6 +209,7 @@ jobs:
             mkdir -p "$HOME/.ghcup/bin"
             curl -sL https://downloads.haskell.org/ghcup/0.1.20.0/x86_64-linux-ghcup-0.1.20.0 > "$HOME/.ghcup/bin/ghcup"
             chmod a+x "$HOME/.ghcup/bin/ghcup"
+            "$HOME/.ghcup/bin/ghcup" config add-release-channel https://raw.githubusercontent.com/haskell/ghcup-metadata/master/ghcup-prereleases-0.0.7.yaml;
             "$HOME/.ghcup/bin/ghcup" install cabal 3.10.2.0 || (cat "$HOME"/.ghcup/logs/*.* && false)
           fi
         env:
diff --git a/fixtures/travis-patch.github b/fixtures/travis-patch.github
index 7a31b2cf..f22ab02b 100644
--- a/fixtures/travis-patch.github
+++ b/fixtures/travis-patch.github
@@ -193,6 +193,7 @@ jobs:
             mkdir -p "$HOME/.ghcup/bin"
             curl -sL https://downloads.haskell.org/ghcup/0.1.20.0/x86_64-linux-ghcup-0.1.20.0 > "$HOME/.ghcup/bin/ghcup"
             chmod a+x "$HOME/.ghcup/bin/ghcup"
+            "$HOME/.ghcup/bin/ghcup" config add-release-channel https://raw.githubusercontent.com/haskell/ghcup-metadata/master/ghcup-prereleases-0.0.7.yaml;
             "$HOME/.ghcup/bin/ghcup" install ghc "$HCVER" || (cat "$HOME"/.ghcup/logs/*.* && false)
             "$HOME/.ghcup/bin/ghcup" install cabal 3.10.2.0 || (cat "$HOME"/.ghcup/logs/*.* && false)
           else
@@ -202,6 +203,7 @@ jobs:
             mkdir -p "$HOME/.ghcup/bin"
             curl -sL https://downloads.haskell.org/ghcup/0.1.20.0/x86_64-linux-ghcup-0.1.20.0 > "$HOME/.ghcup/bin/ghcup"
             chmod a+x "$HOME/.ghcup/bin/ghcup"
+            "$HOME/.ghcup/bin/ghcup" config add-release-channel https://raw.githubusercontent.com/haskell/ghcup-metadata/master/ghcup-prereleases-0.0.7.yaml;
             "$HOME/.ghcup/bin/ghcup" install cabal 3.10.2.0 || (cat "$HOME"/.ghcup/logs/*.* && false)
           fi
         env:
diff --git a/haskell-ci.cabal b/haskell-ci.cabal
index 5f437077..fdba2e97 100644
--- a/haskell-ci.cabal
+++ b/haskell-ci.cabal
@@ -1,6 +1,6 @@
 cabal-version:      2.2
 name:               haskell-ci
-version:            0.18.1
+version:            0.19.20240316
 synopsis:           Cabal package script generator for Travis-CI
 description:
   Script generator (@haskell-ci@) for
diff --git a/src/HaskellCI/Compiler.hs b/src/HaskellCI/Compiler.hs
index 5c49b0a2..66aecada 100644
--- a/src/HaskellCI/Compiler.hs
+++ b/src/HaskellCI/Compiler.hs
@@ -147,6 +147,7 @@ knownGhcVersions = fmap mkVersion
     , [9,4,1],  [9,4,2],  [9,4,3], [9,4,4], [9,4,5], [9,4,6], [9,4,7], [9,4,8]
     , [9,6,1],  [9,6,2],  [9,6,3], [9,6,4]
     , [9,8,1],  [9,8,2]
+    , [9,10,1]
     ]
 
 knownGhcjsVersions :: [Version]
@@ -189,7 +190,7 @@ dispCabalVersion :: Maybe Version -> String
 dispCabalVersion = maybe "head" C.prettyShow
 
 ghcAlpha :: Maybe (Version, Version)
-ghcAlpha = Nothing -- Just (mkVersion [9,8,1], mkVersion [9,8,0,20230929])
+ghcAlpha = Just (mkVersion [9,10,1], mkVersion [9,10,0,20240313])
 
 -- | GHC HEAD, and versions specified by head.hackage option.
 usesHeadHackage