diff --git a/.github/workflows/built_and_test.yml b/.github/workflows/built_and_test.yml
index 5304014..c2452b8 100644
--- a/.github/workflows/built_and_test.yml
+++ b/.github/workflows/built_and_test.yml
@@ -73,7 +73,7 @@ jobs:
       && contains(github.repository, 'Kelvindev15/Kotlin2PlantUML')
     steps:
       - name: Checkout
-        uses: actions/checkout@v3.6.0
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4.0.0
         with:
           submodules: recursive
       - uses: DanySK/build-check-deploy-gradle-action@2.2.8