diff --git a/.github/workflows/pull_request.yml b/.github/workflows/pull_request.yml
index 43ea2f192..64f2ff9df 100644
--- a/.github/workflows/pull_request.yml
+++ b/.github/workflows/pull_request.yml
@@ -4,6 +4,11 @@ on:
     types: [opened, synchronize, reopened, edited]
     branches-ignore:
       - main
+  workflow_run:
+    workflows:
+      - "Update toolchain"
+    types:
+      - completed
 
 env:
   FORCE_COLOR: "1"