diff --git a/.github/workflows/vllm-benchmark.yml b/.github/workflows/vllm-benchmark.yml
index 0cda031..aa75f4e 100644
--- a/.github/workflows/vllm-benchmark.yml
+++ b/.github/workflows/vllm-benchmark.yml
@@ -191,6 +191,12 @@ jobs:
         with:
           registry-type: public
 
+      - name: Clean up unused Docker images
+        if: env.DEVICE_NAME == 'hpu' || contains(matrix.runner, 'gnr')
+        run: |
+          set -eux
+          docker image prune -a -f || true
+
       - name: Check for last benchmark commit
         working-directory: vllm-benchmarks
         env: