diff --git a/.github/workflows/continuous.yml b/.github/workflows/continuous.yml
index 4bbdada..3451283 100644
--- a/.github/workflows/continuous.yml
+++ b/.github/workflows/continuous.yml
@@ -16,7 +16,13 @@
 
 name: continuous
 
-on: [push]
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
 
 jobs:
   ubuntu-latest:
diff --git a/build/Build.cs b/build/Build.cs
index 39c8473..1a228a1 100644
--- a/build/Build.cs
+++ b/build/Build.cs
@@ -19,7 +19,8 @@
     "continuous",
     GitHubActionsImage.UbuntuLatest,
     FetchDepth = 0,
-    On = [GitHubActionsTrigger.Push],
+    OnPushBranches = ["main"],
+    OnPullRequestBranches = ["main"],
     PublishArtifacts = true,
     InvokedTargets = [nameof(Compile), nameof(Pack)])]
 [GitHubActions(