diff --git a/.github/workflows/esy.yml b/.github/workflows/esy.yml
index 033a65f..c0f715a 100644
--- a/.github/workflows/esy.yml
+++ b/.github/workflows/esy.yml
@@ -1,7 +1,8 @@
 name: Esy
 on:
-  - push
-  - pull_request
+  push:
+    branches: [main]
+  pull_request:
 
 jobs:
   build:
diff --git a/.github/workflows/opam.yml b/.github/workflows/opam.yml
index bfdf840..08d15c8 100644
--- a/.github/workflows/opam.yml
+++ b/.github/workflows/opam.yml
@@ -1,7 +1,8 @@
 name: Opam
 on:
-  - push
-  - pull_request
+  push:
+    branches: [main]
+  pull_request:
 
 jobs:
   build: