diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index c0211d9..250d574 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -20,7 +20,7 @@ jobs:
           cache: true
 
       - name: Setup Ko
-        uses: ko-build/setup-ko@v0.9
+        uses: ko-build/setup-ko@d006021bd0c28d1ce33a07e7943d48b079944c8d # v0.9
 
       - name: Install Task
         uses: arduino/setup-task@b91d5d2c96a56797b48ac1e0e89220bf64044611 # v2