diff --git a/.github/workflows/psalm.yml b/.github/workflows/psalm.yml
index f560011..8874569 100644
--- a/.github/workflows/psalm.yml
+++ b/.github/workflows/psalm.yml
@@ -2,9 +2,9 @@ name: Psalm
 
 on:
   push:
-    branches: [ master ]
+    branches: [ v3.x ]
   pull_request:
-    branches: [ master ]
+    branches: [ v3.x ]
 
 jobs:
   psalm: