diff --git a/.gitignore b/.gitignore
index 0d3dfb1d..49c50bfb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,3 +9,7 @@ dist-newstyle/
 
 # Haskell Language Server-related
 hie.yaml
+
+# Stan-related
+.hie
+stan.html
diff --git a/package.yaml b/package.yaml
index e1536795..ac86645a 100644
--- a/package.yaml
+++ b/package.yaml
@@ -79,6 +79,8 @@ when:
   dependencies: network >= 3.1.2.9
 
 ghc-options:
+  - -fwrite-ide-info
+  - -hiedir=.hie
   - -Wall
 
 # For testing
diff --git a/pantry.cabal b/pantry.cabal
index ef1015ff..51310d88 100644
--- a/pantry.cabal
+++ b/pantry.cabal
@@ -51,7 +51,7 @@ library
       Pantry.SHA256
   hs-source-dirs:
       src/
-  ghc-options: -Wall
+  ghc-options: -fwrite-ide-info -hiedir=.hie -Wall
   build-depends:
       Cabal >=3 && <3.11
     , aeson
@@ -130,7 +130,7 @@ library internal
       Paths_pantry
   hs-source-dirs:
       int/
-  ghc-options: -Wall
+  ghc-options: -fwrite-ide-info -hiedir=.hie -Wall
   build-depends:
       Cabal >=3 && <3.11
     , aeson
@@ -194,7 +194,7 @@ executable test-pretty-exceptions
       Paths_pantry
   hs-source-dirs:
       app/test-pretty-exceptions
-  ghc-options: -Wall
+  ghc-options: -fwrite-ide-info -hiedir=.hie -Wall
   build-depends:
       Cabal >=3 && <3.11
     , aeson
@@ -288,7 +288,7 @@ test-suite spec
       Paths_pantry
   hs-source-dirs:
       test
-  ghc-options: -Wall
+  ghc-options: -fwrite-ide-info -hiedir=.hie -Wall
   build-tool-depends:
       hspec-discover:hspec-discover
   build-depends: