diff --git a/.github/workflows/cmake-lint.yml b/.github/workflows/cmake-lint.yml
index 714b438..961b145 100644
--- a/.github/workflows/cmake-lint.yml
+++ b/.github/workflows/cmake-lint.yml
@@ -1,9 +1,14 @@
 name: "CMake Lint"
 
 on:
-  push:
-    paths-ignore:
-      - 'README.md'
+  pull_request:
+    branches: [ main ]
+    paths:
+      - '**/CMakeLists.txt'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
 
 jobs:
   lint:
diff --git a/.github/workflows/cpp-build.yml b/.github/workflows/cpp-build.yml
index c4d349a..3836df5 100644
--- a/.github/workflows/cpp-build.yml
+++ b/.github/workflows/cpp-build.yml
@@ -1,9 +1,18 @@
 name: "C++ Build"
 
 on:
-  push:
-    paths-ignore:
-      - 'README.md'
+  pull_request:
+    branches: [ main ]
+    paths:
+      - 'src/**'
+      - 'include/**'
+      - 'test/**'
+      - 'examples/**'
+      - 'CMakeLists.txt'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
 
 jobs:
   build:
diff --git a/.github/workflows/cpp-lint.yml b/.github/workflows/cpp-lint.yml
index ec6e0f9..8f4b63b 100644
--- a/.github/workflows/cpp-lint.yml
+++ b/.github/workflows/cpp-lint.yml
@@ -1,9 +1,19 @@
 name: "C++ Lint"
 
 on:
-  push:
-    paths-ignore:
-      - 'README.md'
+  pull_request:
+    branches: [ main ]
+    paths:
+      - 'src/**/*.cpp'
+      - 'include/**/*.h'
+      - 'test/**/*.cpp'
+      - 'test/**/*.h'
+      - 'examples/**/*.cpp'
+      - 'examples/**/*.h'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
 
 jobs:
   lint:
diff --git a/.github/workflows/cpp-unittest.yml b/.github/workflows/cpp-unittest.yml
index cb1e55e..93acca3 100644
--- a/.github/workflows/cpp-unittest.yml
+++ b/.github/workflows/cpp-unittest.yml
@@ -1,9 +1,18 @@
 name: "C++ Unittests"
 
 on:
-  push:
-    paths-ignore:
-      - 'README.md'
+  pull_request:
+    branches: [ main ]
+    paths:
+      - 'src/**'
+      - 'include/**'
+      - 'test/**'
+      - 'CMakeLists.txt'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 
 jobs:
   unittest:
diff --git a/.github/workflows/format.yml b/.github/workflows/format.yml
index c3a0ba7..5d50283 100644
--- a/.github/workflows/format.yml
+++ b/.github/workflows/format.yml
@@ -1,9 +1,16 @@
 name: "C++/CMake Format"
 
 on:
-  push:
-    paths-ignore:
-      - 'README.md'
+  pull_request:
+    branches: [ main ]
+    paths:
+      - '**/*.cpp'
+      - '**/*.h'
+      - '**/CMakeLists.txt'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
 
 jobs:
   format: