diff --git a/action.yml b/action.yml
index 77369dd..d0db751 100644
--- a/action.yml
+++ b/action.yml
@@ -94,6 +94,7 @@ runs:
           --method PUT \
           --body-file "$MYUPLOAD" \
           --header "x-ms-blob-content-type: zip" \
+          --header "x-ms-blob-type: BlockBlob" \
           "$SIGNED_UPLOAD_URL"
 
         # Finalize the artifact