diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f0ea3944c0..d6b8ab9c0d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -20,7 +20,7 @@ jobs:
         ghc: ['9.0', '8.10', '8.8', '8.6', '8.4', '8.2']
     steps:
     - uses: actions/checkout@v2
-    - uses: haskell/actions/setup@v1
+    - uses: haskell/actions/setup@v1.2.1
       id: setup-haskell-cabal
       with:
         ghc-version: ${{ matrix.ghc }}