diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 93b5760..40e9e1f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,8 +16,7 @@ jobs:
         os: [ubuntu-latest, macOS-latest]
         cabal: ["3.6"]
         ghc:
-          - "9.0.2"
-          - "9.2.5"
+          - "9.6.6"
         # exclude:
         # - os: windows-latest
         #   ghc: 8.8.4
@@ -68,8 +67,8 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        stack: ["2.9.1"]
-        ghc: ["9.2.5"]
+        stack: ["2.13.1"]
+        ghc: ["9.6.6"]
 
     steps:
       - uses: actions/checkout@v2