diff --git a/.github/workflows/contracts/chainloop-vault-release.yml b/.github/workflows/contracts/chainloop-vault-release.yml
index 6dae43ccc..f1b41290c 100644
--- a/.github/workflows/contracts/chainloop-vault-release.yml
+++ b/.github/workflows/contracts/chainloop-vault-release.yml
@@ -1,5 +1,10 @@
 # Contract for the release workflow
 schemaVersion: v1
+materials:
+  - name: slsa-attestation
+    type: SLSA_PROVENANCE
+    annotations:
+      - name: github_attestation
 policies:
   attestation:
     - ref: source-commit
diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index 1bdd06f84..f3847f735 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -174,7 +174,7 @@ jobs:
 
       - name: Attest SLSA attestation
         run: |
-          chainloop attestation --name slsa-attestation add --value ${{ steps.slsa-attest.outputs.bundle-path }} --kind SLSA_PROVENANCE --attestation-id ${{ env.ATTESTATION_ID }}
+          chainloop attestation --name slsa-attestation add --value ${{ steps.slsa-attest.outputs.bundle-path }} --annotation github_attestation="${{ steps.slsa-attest.outputs.attestation-url }}" --kind SLSA_PROVENANCE --attestation-id ${{ env.ATTESTATION_ID }}
 
       - name: Include source code on attestation
         run: |