diff --git a/.github/workflows/humble-source-build.yml b/.github/workflows/humble-source-build.yml
index 8b214a6..df9d699 100644
--- a/.github/workflows/humble-source-build.yml
+++ b/.github/workflows/humble-source-build.yml
@@ -4,6 +4,11 @@ on:
   push:
     branches:
       - humble
+  pull_request:
+    branches:
+      - humble
+    paths:
+      - .github/workflows/humble-source-build.yml
   schedule:
     # Run every day to detect flakiness and broken dependencies
     - cron: '03 3 * * MON-FRI'
@@ -19,4 +24,4 @@ jobs:
     with:
       ros_distro: humble
       ref: humble
-      os_name: ubuntu-22.04
+      container: ubuntu:22.04
diff --git a/.github/workflows/jazzy-source-build.yml b/.github/workflows/jazzy-source-build.yml
index b462abc..b78cb2e 100644
--- a/.github/workflows/jazzy-source-build.yml
+++ b/.github/workflows/jazzy-source-build.yml
@@ -4,6 +4,11 @@ on:
   push:
     branches:
       - jazzy
+  pull_request:
+    branches:
+      - jazzy
+    paths:
+      - .github/workflows/jazzy-source-build.yml
   schedule:
     # Run every day to detect flakiness and broken dependencies
     - cron: '03 3 * * MON-FRI'
@@ -19,5 +24,4 @@ jobs:
     with:
       ros_distro: jazzy
       ref: jazzy
-      os_name: ubuntu-latest
       container: ubuntu:24.04
diff --git a/.github/workflows/rolling-source-build.yml b/.github/workflows/rolling-source-build.yml
index 35b1d54..ea6146d 100644
--- a/.github/workflows/rolling-source-build.yml
+++ b/.github/workflows/rolling-source-build.yml
@@ -4,6 +4,11 @@ on:
   push:
     branches:
       - master
+  pull_request:
+    branches:
+      - master
+    paths:
+      - .github/workflows/rolling-source-build.yml
   schedule:
     # Run every day to detect flakiness and broken dependencies
     - cron: '03 3 * * MON-FRI'
@@ -22,12 +27,9 @@ jobs:
         include:
         - ROS_DISTRO: rolling
           CONTAINER: ubuntu:24.04
-          OS_NAME: ubuntu-latest
         - ROS_DISTRO: kilted
           CONTAINER: ubuntu:24.04
-          OS_NAME: ubuntu-latest
     with:
       ros_distro: ${{ matrix.ROS_DISTRO }}
       ref: master
-      os_name: ${{ matrix.OS_NAME }}
       container: ${{ matrix.CONTAINER }}