diff --git a/.github/workflows/build-tarball.yml b/.github/workflows/build-tarball.yml
index e173d4a544e0..709e4689117a 100644
--- a/.github/workflows/build-tarball.yml
+++ b/.github/workflows/build-tarball.yml
@@ -2,7 +2,7 @@ name: Build from tarball
 
 on:
   pull_request:
-    types: [opened, synchronize, reopened, ready_for_review]
+    types: [opened, assigned, synchronize, reopened, ready_for_review]
     paths-ignore:
       - '**.md'
       - '**.nix'