diff --git a/.github/workflows/colcon-build.yml b/.github/workflows/colcon-build.yml
index ed0fcc5..982b409 100644
--- a/.github/workflows/colcon-build.yml
+++ b/.github/workflows/colcon-build.yml
@@ -5,8 +5,8 @@ on: push
 jobs:
   build:
     runs-on: ubuntu-22.04
-  container:
-    image: osrf/ros:humble-desktop
+    container:
+      image: osrf/ros:humble-desktop
 
     steps:
       - uses: actions/checkout@v4