diff --git a/.github/workflows/build-all-versions.yml b/.github/workflows/build-all-versions.yml
index 9ab8a0622..33cc3668d 100644
--- a/.github/workflows/build-all-versions.yml
+++ b/.github/workflows/build-all-versions.yml
@@ -84,7 +84,7 @@ jobs:
       name: Cache ~/.stack
       with:
         path: ~/.stack
-        key: ${{ runner.os }}-${{ matrix.ghc }}-stack
+        key: ${{ runner.os }}-${{ matrix.ghc }}-stack--${{ hashFiles(format('stack-ghc{0}', matrix.ghc)) }}
 
     - name: Build
       run: |