diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index e6d9ce19..0cbc34ff 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -6,6 +6,14 @@ on:
       - master
       - stable
 
+  # Allow this workflow to be run on the `master` branch when a webhook event
+  # called `repository_dispatch` is triggered. This is used from the CI workflow
+  # in https://github.com/kaitai-io/kaitai_struct to rebuild the devel Web IDE
+  # after a new version of KSC is published to npm.
+  repository_dispatch:
+    types:
+      - rebuild
+
 jobs:
   build:
     runs-on: ubuntu-latest