diff --git a/.github/workflows/spike-openocd-tests.yml b/.github/workflows/spike-openocd-tests.yml
index df87c9210..44b52be2a 100644
--- a/.github/workflows/spike-openocd-tests.yml
+++ b/.github/workflows/spike-openocd-tests.yml
@@ -24,7 +24,7 @@ jobs:
         uses: actions/cache@v3
         with:
           path: /opt/riscv
-          key: "spike-$SPIKE_REV"
+          key: "spike-${{env.SPIKE_REV}}"
 
       - if: ${{ steps.cache-deps.outputs.cache-hit != 'true' }}
         name: Download Toolchain