diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index e658cd3..270bfc5 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -35,7 +35,7 @@ jobs:
             ref: import/4.18.0-1ubuntu2_ubuntu18.04.1
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.4
       - name: Clone repo
         run: git clone --depth=1 ${{matrix.repo}} -b ${{matrix.ref}} ${{matrix.package}}
       - name: Test run