diff --git a/builder/image-ros.sh b/builder/image-ros.sh
index 2bbdd2aa..9b469574 100755
--- a/builder/image-ros.sh
+++ b/builder/image-ros.sh
@@ -150,7 +150,7 @@ echo_stamp "Installing CLEVER" \
 
 echo_stamp "Build CLEVER documentation"
 cd /home/pi/catkin_ws/src/clever
-npm install gitbook-cli -g
+NPM_CONFIG_UNSAFE_PERM=true npm install gitbook-cli -g
 gitbook build
 
 echo_stamp "Installing additional ROS packages"