diff --git a/.github/workflows/clp-core-build-macos.yaml b/.github/workflows/clp-core-build-macos.yaml
index e7f9f57b6..0e7deec76 100644
--- a/.github/workflows/clp-core-build-macos.yaml
+++ b/.github/workflows/clp-core-build-macos.yaml
@@ -1,6 +1,16 @@
 name: "clp-core-build-macos"
 
 on:
+  pull_request:
+    paths:
+      - ".github/workflows/clp-core-build-macos.yaml"
+      - "components/core/cmake/**"
+      - "components/core/CMakeLists.txt"
+      - "components/core/src/**"
+      - "components/core/tests/**"
+      - "components/core/tools/scripts/lib_install/macos-12/**"
+      - "components/core/tools/scripts/deps-download/**"
+      - "components/core/tools/scripts/utils/build-and-run-unit-tests.sh"
   push:
     paths:
       - ".github/workflows/clp-core-build-macos.yaml"
diff --git a/.github/workflows/clp-core-build.yaml b/.github/workflows/clp-core-build.yaml
index 01a369558..6787dd47b 100644
--- a/.github/workflows/clp-core-build.yaml
+++ b/.github/workflows/clp-core-build.yaml
@@ -1,6 +1,12 @@
 name: clp-core-build
 
 on:
+  pull_request:
+    paths:
+      - ".github/actions/**"
+      - ".github/workflows/clp-core-build.yaml"
+      - "components/core/**"
+      - "!components/core/tools/scripts/lib_install/macos-12/**"
   push:
     paths:
       - ".github/actions/**"
diff --git a/.github/workflows/clp-execution-image-build.yaml b/.github/workflows/clp-execution-image-build.yaml
index 44b7f6c1e..6a0228c05 100644
--- a/.github/workflows/clp-execution-image-build.yaml
+++ b/.github/workflows/clp-execution-image-build.yaml
@@ -1,6 +1,11 @@
 name: "clp-execution-image-build"
 
 on:
+  pull_request:
+    paths:
+      - ".github/workflows/clp-execution-image-build.yaml"
+      - "components/core/tools/scripts/lib_install/*"
+      - "tools/docker-images/clp-execution-base-focal/**"
   push:
     paths:
       - ".github/workflows/clp-execution-image-build.yaml"