diff --git a/.github/workflows/build-check.yml b/.github/workflows/build-check.yml
index 06e633c7..714cfa88 100644
--- a/.github/workflows/build-check.yml
+++ b/.github/workflows/build-check.yml
@@ -11,12 +11,12 @@ permissions:
 jobs:
   build:
 
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
 
     strategy:
       matrix:
         node-version: [24.x]
-        os: [ubuntu-latest, windows-latest, macOS-latest]
+        os: ${{ fromJSON(github.repository == 'coreui/coreui-angular' && '["ubuntu-latest", "windows-latest", "macOS-latest"]' || '["ubuntu-latest"]') }}
 
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
diff --git a/.github/workflows/project-chartjs-check.yml b/.github/workflows/project-chartjs-check.yml
index 70d73801..0d0b9d96 100644
--- a/.github/workflows/project-chartjs-check.yml
+++ b/.github/workflows/project-chartjs-check.yml
@@ -15,12 +15,12 @@ permissions:
 jobs:
   build:
 
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
 
     strategy:
       matrix:
         node-version: [24.x]
-        os: [ubuntu-latest, windows-latest, macOS-latest]
+        os: ${{ fromJSON(github.repository == 'coreui/coreui-angular' && '["ubuntu-latest", "windows-latest", "macOS-latest"]' || '["ubuntu-latest"]') }}
 
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
diff --git a/.github/workflows/project-icons-check.yml b/.github/workflows/project-icons-check.yml
index d10edce5..4e4b82c2 100644
--- a/.github/workflows/project-icons-check.yml
+++ b/.github/workflows/project-icons-check.yml
@@ -15,12 +15,12 @@ permissions:
 jobs:
   build:
 
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
 
     strategy:
       matrix:
         node-version: [24.x]
-        os: [ubuntu-latest, windows-latest, macOS-latest]
+        os: ${{ fromJSON(github.repository == 'coreui/coreui-angular' && '["ubuntu-latest", "windows-latest", "macOS-latest"]' || '["ubuntu-latest"]') }}
 
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
diff --git a/.github/workflows/project-lib-check.yml b/.github/workflows/project-lib-check.yml
index 0a32846f..a44c2eab 100644
--- a/.github/workflows/project-lib-check.yml
+++ b/.github/workflows/project-lib-check.yml
@@ -15,12 +15,12 @@ permissions:
 jobs:
   build:
 
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
 
     strategy:
       matrix:
         node-version: [24.x]
-        os: [ubuntu-latest, windows-latest, macOS-latest]
+        os: ${{ fromJSON(github.repository == 'coreui/coreui-angular' && '["ubuntu-latest", "windows-latest", "macOS-latest"]' || '["ubuntu-latest"]') }}
 
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1