diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4ee4de5..764cd99 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -82,6 +82,13 @@ jobs:
           curl -LO https://github.com/sigstore/cosign/releases/download/v1.13.1/cosign-linux-amd64
           chmod +x cosign-linux-amd64
           sudo mv cosign-linux-amd64 /usr/local/bin/cosign
+          
+      - name: Write signing key to disk
+        run:  |
+          echo $KEY > cosign.key
+        shell: bash
+        env: 
+          KEY: ${{ secrets.COSIGN_PRIVATE_KEY }}
 
       - name: Sign Docker Image
         env: