diff --git a/.github/workflows/haskell-ci.yml b/.github/workflows/haskell-ci.yml
index 1537a51..dc75b0e 100644
--- a/.github/workflows/haskell-ci.yml
+++ b/.github/workflows/haskell-ci.yml
@@ -33,6 +33,11 @@ jobs:
             compilerVersion: 9.8.2
             setup-method: ghcup
             allow-failure: false
+          - compiler: ghc-9.6.4
+            compilerKind: ghc
+            compilerVersion: 9.6.4
+            setup-method: ghcup
+            allow-failure: false
           - compiler: ghc-9.4.5
             compilerKind: ghc
             compilerVersion: 9.4.5
diff --git a/wai-handler-hal.cabal b/wai-handler-hal.cabal
index debe199..3d0a8b3 100644
--- a/wai-handler-hal.cabal
+++ b/wai-handler-hal.cabal
@@ -28,15 +28,12 @@ extra-source-files:
   test/golden/WaiRequest.txt
 
 tested-with:
-  GHC ==8.6.5
-   || ==8.8.4
-   || ==8.10.7
+  GHC ==8.10.7
    || ==9.0.2
    || ==9.2.4
    || ==9.4.5
-   || ==9.6.5
+   || ==9.6.4
    || ==9.8.2
-   || ==9.10.1
 
 common opts
   default-language: Haskell2010