diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index f832aec..877cce2 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -9,10 +9,12 @@ jobs:
         env:
           - {ROS_DISTRO: humble, ROS_REPO: testing}
           - {ROS_DISTRO: humble, ROS_REPO: main}
+          - {ROS_DISTRO: iron, ROS_REPO: testing}
+          - {ROS_DISTRO: iron, ROS_REPO: main}
           - {ROS_DISTRO: rolling, ROS_REPO: testing}
           - {ROS_DISTRO: rolling, ROS_REPO: main}
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v4
       - uses: 'ros-industrial/industrial_ci@master'
         env: ${{matrix.env}}