diff --git a/.github/workflows/typecheck.yml b/.github/workflows/typecheck.yml
index 62d29e62..e40009c4 100644
--- a/.github/workflows/typecheck.yml
+++ b/.github/workflows/typecheck.yml
@@ -2,6 +2,7 @@ name: Type Check
 
 on:
   push:
+  pull_request:
 
 jobs:
   typecheck: