diff --git a/.github/workflows/build-smapi.yml b/.github/workflows/build-smapi.yml
index 18b8d46d..c6f221d2 100644
--- a/.github/workflows/build-smapi.yml
+++ b/.github/workflows/build-smapi.yml
@@ -111,5 +111,6 @@ jobs:
 
             -   name: Generate artifact attestations
                 uses: actions/attest-build-provenance@v2
+                if: github.ref_type == 'tag'
                 with:
                     subject-path: bin/SMAPI-${{env.VERSION}}-installer.zip