diff --git a/.github/workflows/check-flake.yml b/.github/workflows/check-flake.yml
index 774f647a..62086c64 100644
--- a/.github/workflows/check-flake.yml
+++ b/.github/workflows/check-flake.yml
@@ -1,9 +1,6 @@
 name: "flake: evaluation check"
 
-on:
-  push:
-    branches:
-    - master
+on: [push, pull_request]
 
 jobs:
   build:
diff --git a/.github/workflows/check-fmt.yml b/.github/workflows/check-fmt.yml
index 6f4f9c6b..db497daa 100644
--- a/.github/workflows/check-fmt.yml
+++ b/.github/workflows/check-fmt.yml
@@ -1,9 +1,6 @@
 name: "flake: format check"
 
-on:
-  push:
-    branches:
-    - master
+on: [push, pull_request]
 
 jobs:
   build: