diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 04eb34a..ca60c29 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -40,7 +40,7 @@ jobs:
         path: |
           ${{ steps.setup-haskell-cabal.outputs.cabal-store }}
           dist-newstyle
-        key: ${{ runner.os }}-${{ matrix.ghc }}
+        key: ${{ matrix.os }}-${{ matrix.ghc }}
     - name: Build
       run: cabal build all --enable-tests
     - name: Test