diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 3796f87..23d615e 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -15,3 +15,4 @@ jobs:
       - uses: brpaz/hadolint-action@master
         with:
           dockerfile: dodona-${{ matrix.image }}.dockerfile
+          ignore: DL3008
diff --git a/dodona-assembly.dockerfile b/dodona-assembly.dockerfile
index 2b05053..e956e1f 100644
--- a/dodona-assembly.dockerfile
+++ b/dodona-assembly.dockerfile
@@ -1,7 +1,7 @@
 FROM python:3.12.3-slim-bullseye
 
 # Add architecture repositories for ARM32
-# hadolint ignore=DL3003,DL3008
+# hadolint ignore=DL3003
 RUN dpkg --add-architecture armhf \
  && apt-get update \
  # Install additional dependencies for fetching and building packages
diff --git a/dodona-bash.dockerfile b/dodona-bash.dockerfile
index e706d7a..e1e4d15 100644
--- a/dodona-bash.dockerfile
+++ b/dodona-bash.dockerfile
@@ -1,6 +1,5 @@
 FROM python:3.12.3-slim-bullseye
 
-# hadolint ignore=DL3008
 RUN apt-get update && \
     apt-get -y install --no-install-recommends \
         bc=1.07.1-2+b2 \
diff --git a/dodona-compilers.dockerfile b/dodona-compilers.dockerfile
index 1f083ae..af7e997 100644
--- a/dodona-compilers.dockerfile
+++ b/dodona-compilers.dockerfile
@@ -4,7 +4,7 @@ ARG LLVM_VERSION="13.0.0"
 ARG LLVM_SHA256="9680c841b5ceffa51f21d0d2ddd7573447b659d1889b83c153b7473342b22a49"
 
 
-# hadolint ignore=DL3008,DL3013,DL4006
+# hadolint ignore=DL3013,DL4006
 RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install --no-install-recommends -y \
     cmake \
     g++ \
diff --git a/dodona-haskell.dockerfile b/dodona-haskell.dockerfile
index 7ceb298..f565209 100644
--- a/dodona-haskell.dockerfile
+++ b/dodona-haskell.dockerfile
@@ -1,6 +1,5 @@
 FROM haskell:9.8.2
 
-# hadolint ignore=DL3008
 RUN apt-get update \
  # Install jq for json querying in bash
  # Install freeglut headers for gloss compilation
diff --git a/dodona-python.dockerfile b/dodona-python.dockerfile
index 484cc09..7102e24 100644
--- a/dodona-python.dockerfile
+++ b/dodona-python.dockerfile
@@ -1,6 +1,5 @@
 FROM python:3.12.3-slim-bullseye
 
-# hadolint ignore=DL3008
 RUN chmod 711 /mnt && \
   useradd -m runner && \
   apt-get update && \
diff --git a/dodona-r.dockerfile b/dodona-r.dockerfile
index def6df1..bc7c839 100644
--- a/dodona-r.dockerfile
+++ b/dodona-r.dockerfile
@@ -1,6 +1,5 @@
 FROM r-base:4.4.0
 
-# hadolint ignore=DL3008
 RUN apt-get update && \
   apt-get install -y --no-install-recommends \
       default-jdk \
diff --git a/dodona-tested.dockerfile b/dodona-tested.dockerfile
index 1036229..3b28edf 100644
--- a/dodona-tested.dockerfile
+++ b/dodona-tested.dockerfile
@@ -2,10 +2,13 @@ FROM python:3.12.3-slim-bullseye
 
 # Environment Kotlin
 ENV SDKMAN_DIR /usr/local/sdkman
+ENV HASKELL_DIR /usr/local/ghcupdir
 ENV PATH $SDKMAN_DIR/candidates/kotlin/current/bin:$PATH
+ENV PATH $SDKMAN_DIR/candidates/java/current/bin:$PATH
+ENV PATH $HASKELL_DIR/ghc/bin:$PATH
+ENV PATH $HASKELL_DIR/cabal:$PATH
 ENV NODE_PATH /usr/lib/node_modules
 # Add manual directory for default-jdk
-# hadolint ignore=DL3008
 RUN mkdir -p /usr/share/man/man1mkdir -p /usr/share/man/man1 \
  && apt-get update \
  # Install additional dependencies
@@ -17,41 +20,44 @@ RUN mkdir -p /usr/share/man/man1mkdir -p /usr/share/man/man1 \
        unzip \
        # Bash language dependencies
        bc binutils bsdmainutils cowsay ed figlet file toilet tree vim xxd \
+       # Dependencies for GHCup
+       autoconf build-essential zlib1g-dev libgmp-dev \
  && curl https://packages.microsoft.com/config/debian/11/packages-microsoft-prod.deb --output packages-microsoft-prod.deb \
  && dpkg -i packages-microsoft-prod.deb \
  && rm packages-microsoft-prod.deb \
- # Add nodejs v18
- && bash -c 'set -o pipefail && curl -fsSL https://deb.nodesource.com/setup_18.x | bash -' \
- # Install programming languages \
+ # JavaScript dependencies
+ && bash -c 'set -o pipefail && curl -fsSL https://deb.nodesource.com/setup_22.x | bash -' \
+ # Haskell dependencies
+ && bash -c "set -o pipefail && curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | BOOTSTRAP_HASKELL_NONINTERACTIVE=1 BOOTSTRAP_HASKELL_MINIMAL=1 sh" \
+ && bash -c "source /root/.ghcup/env && ghcup install ghc 9.6 --isolate $HASKELL_DIR/ghc" \
+ && bash -c "source /root/.ghcup/env && ghcup install cabal --isolate $HASKELL_DIR/cabal" \
+  # Install programming languages \
  && apt-get install -y --no-install-recommends \
-       # TESTed Java and Kotlin judge dependency
-       openjdk-17-jdk \
-       checkstyle=8.36.1-1 \
-       # TESTed Haskell judge dependency
-       haskell-platform=2014.2.0.0.debian8 \
-       hlint=3.1.6-1 \
+       # Checkstyle, other Java stuff uses SDKMAN! below
+       checkstyle \
+       hlint \
        # TESTed C judge dependency
-       gcc=4:10.2.1-1 \
-       cppcheck=2.3-1 \
+       gcc \
+       cppcheck \
        # TESTed Javascript judge dependency
        nodejs \
        # TESTed bash judge dependency
-       shellcheck=0.7.1-1+deb11u1 \
+       shellcheck \
        # C# dependency
-       dotnet-sdk-6.0=6.0.405-1 \
+       dotnet-sdk-8.0 \
  && apt-get clean \
  && rm -rf /var/lib/apt/lists/* \
  # TESTed Judge depencencies
- && pip install --no-cache-dir --upgrade psutil==5.9.5 attrs==23.1.0 cattrs==23.1.2 jsonschema==4.19.1 typing_inspect==0.9.0 pyyaml==6.0.1 Pygments==2.16.1 python-i18n==0.3.9 pylint==3.0.1 \
+ && pip install --no-cache-dir --upgrade psutil==5.9.8 attrs==23.2.0 cattrs==23.2.3 jsonschema==4.22.0 typing_inspect==0.9.0 pyyaml==6.0.1 Pygments==2.18.0 python-i18n==0.3.9 pylint==3.0.1 \
  # TESTed Kotlin judge dependencies
  && bash -c 'set -o pipefail && curl -s "https://get.sdkman.io?rcupdate=false" | bash' \
  && chmod a+x "$SDKMAN_DIR/bin/sdkman-init.sh" \
- && bash -c "source \"$SDKMAN_DIR/bin/sdkman-init.sh\" && sdk install kotlin 1.8.0" \
- && curl -sSLO https://github.com/pinterest/ktlint/releases/download/0.48.2/ktlint \
+ && bash -c "source \"$SDKMAN_DIR/bin/sdkman-init.sh\" && sdk install java 21.0.3-tem && sdk install kotlin" \
+ && curl -sSLO https://github.com/pinterest/ktlint/releases/download/1.2.1/ktlint \
  && chmod a+x ktlint \
  && mv ktlint /usr/local/bin \
  # JavaScript dependencies
- && npm install -g eslint@8.36 abstract-syntax-tree@2.17.6 \
+ && npm install -g eslint@8.57 abstract-syntax-tree@2.22 \
  # Haskell dependencies
  && cabal update \
  && cabal v1-install --global aeson \