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..cef4457 100644
--- a/wai-handler-hal.cabal
+++ b/wai-handler-hal.cabal
@@ -34,9 +34,8 @@ tested-with:
    || ==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