diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 5c768b3..770322f 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -2,7 +2,7 @@ name: build
 
 on:
   push:
-    branches: [ "main" ]
+    branches: [ "master" ]
 jobs:
   run-build:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/cpplint.yml b/.github/workflows/cpplint.yml
index a297411..90fa9a9 100644
--- a/.github/workflows/cpplint.yml
+++ b/.github/workflows/cpplint.yml
@@ -2,7 +2,7 @@ name: cpplint
 
 on:
   push:
-    branches: [ "main" ]
+    branches: [ "master" ]
 jobs:
   run-lint:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/valgrind.yml b/.github/workflows/valgrind.yml
index 467ea0b..5a00f7e 100644
--- a/.github/workflows/valgrind.yml
+++ b/.github/workflows/valgrind.yml
@@ -2,7 +2,7 @@ name: valgrind
 
 on:
   push:
-    branches: [ "main" ]
+    branches: [ "master" ]
 jobs:
   run-valgrind:
     runs-on: ubuntu-latest