diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 22d9e9a..a95d333 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -22,6 +22,6 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
 
       # TODO: Maybe there's an action that does this for us.
\ No newline at end of file