diff --git a/.github/workflows/test-invoke-conda.yml b/.github/workflows/test-invoke-conda.yml
index 2441438960..c8e9881f4a 100644
--- a/.github/workflows/test-invoke-conda.yml
+++ b/.github/workflows/test-invoke-conda.yml
@@ -80,7 +80,7 @@ jobs:
         uses: actions/cache@v3
         with:
           path: ${{ env.CONDA }}/envs
-          key: conda-${{ runner.os }}-${{ runner.arch }}-${{ hashFiles('${{ matrix.environment-file }}') }}
+          key: conda-${{ runner.os }}-${{ runner.arch }}-${{ hashFiles(matrix.environment-file) }}
         id: cache-conda-pkgs
 
       - name: Activate Conda Env