diff --git a/.github/actions/run-tests/action.yaml b/.github/actions/run-tests/action.yaml
index 0100b32d4..e33289a1f 100644
--- a/.github/actions/run-tests/action.yaml
+++ b/.github/actions/run-tests/action.yaml
@@ -7,6 +7,8 @@ inputs:
 runs:
   using: "composite"
   steps:
+    - name: Install Cosign
+      uses: sigstore/cosign-installer@4959ce089c160fddf62f7b42464195ba1a56d382 # v3.6.0
     - name: Install Chainsaw
       uses: kyverno/action-install-chainsaw@b2f61a8d0459a65c476ac802514d88e1612b3396 # v0.2.9
       with: