diff --git a/.github/workflows/ci_ut.yml b/.github/workflows/ci_ut.yml
index 0d67d46320b..97fbaff88f9 100644
--- a/.github/workflows/ci_ut.yml
+++ b/.github/workflows/ci_ut.yml
@@ -57,6 +57,9 @@ jobs:
     name: Unit Test
     runs-on: ubuntu-22.04
     steps:
+      - name: Clean docker images
+        run: docker image prune
+
       - name: Checkout
         uses: actions/checkout@v4