diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e2bd873..dae7928 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,10 +1,12 @@
 name: CI
 
 on:
+  # Pre-release lines live on `prerelease/<version>` branches and ship betas from
+  # there, so they are held to the same checks as main.
   push:
-    branches: [main]
+    branches: [main, "prerelease/**"]
   pull_request:
-    branches: [main]
+    branches: [main, "prerelease/**"]
 
 jobs:
   lint: