diff --git a/.github/workflows/stack.yml b/.github/workflows/stack.yml
index d0fb9e8..41e0e75 100644
--- a/.github/workflows/stack.yml
+++ b/.github/workflows/stack.yml
@@ -23,7 +23,7 @@ jobs:
 
         - os: macos-latest
           ghc: 9.8.2
-          resolver: nightly-2024-06-22
+          resolver: nightly-2024-10-11
         - os: macos-latest
           ghc: 9.2.8
           resolver: lts-20.26
@@ -32,17 +32,17 @@ jobs:
 
         - os: windows-latest
           ghc: 9.8.2
-          resolver: nightly-2024-06-22
+          resolver: nightly-2024-10-11
         - os: windows-latest
           ghc: 8.4.4
           resolver: lts-12.26
 
         - os: ubuntu-latest
           ghc: 9.8.2
-          resolver: nightly-2024-06-22
+          resolver: nightly-2024-10-11
         - os: ubuntu-latest
-          ghc: 9.6.5
-          resolver: lts-22.26
+          ghc: 9.6.6
+          resolver: lts-22.37
         - os: ubuntu-latest
           ghc: 9.4.8
           resolver: lts-21.25
diff --git a/unix-compat.cabal b/unix-compat.cabal
index 45c8e18..6017fb4 100644
--- a/unix-compat.cabal
+++ b/unix-compat.cabal
@@ -18,7 +18,7 @@ build-type:     Simple
 tested-with:
   GHC == 9.10.1
   GHC == 9.8.2
-  GHC == 9.6.5
+  GHC == 9.6.6
   GHC == 9.4.8
   GHC == 9.2.8
   GHC == 9.0.2