diff --git a/action.yml b/action.yml
index 58214a8..95652f1 100644
--- a/action.yml
+++ b/action.yml
@@ -27,8 +27,12 @@ runs:
 
   steps:
 
+  - name: Set cosign installer version
+    id: set_version
+    run: echo "COSIGN_INSTALLER_VERSION=${{ inputs.cosign-installer-version }}" >> $GITHUB_ENV
+
   - name: Install Cosign
-    uses: sigstore/cosign-installer@${{ inputs.cosign-installer-version }}
+    uses: sigstore/cosign-installer@${{ env.COSIGN_INSTALLER_VERSION }}
 
   - name: Sign image with a key
     env: