diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 4dd37f2..b38aac1 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -30,7 +30,7 @@ ros-packages:
   inherit:
     default: [before_script, image]
   script:
-    - cachix watch-exec robossembler -- nix develop .#ros -c echo "ROS environment is BUILT"
+    - cachix watch-exec robossembler -- nix develop .#ros --impure -c echo "ROS environment is BUILT"
 
 perception-packages:
   stage: build