diff --git a/.github/workflows/draft-pdf.yml b/.github/workflows/draft-pdf.yml
index 665727c2..820ee350 100644
--- a/.github/workflows/draft-pdf.yml
+++ b/.github/workflows/draft-pdf.yml
@@ -1,6 +1,8 @@
 on:
   push:
     branches: [joss]
+  pull_request:
+    branches: [ joss ]
 
 jobs:
   paper: