diff --git a/install_orbit_environment.sh b/install_orbit_environment.sh
index c39251a..75c39c4 100644
--- a/install_orbit_environment.sh
+++ b/install_orbit_environment.sh
@@ -91,6 +91,7 @@ fi
 ## install rvm
 if [ -z $(which rvm) ]; then
 	sudo apt-get install software-properties-common -y
+	sudo apt-get install --reinstall ca-certificates -y
 	sudo apt-add-repository -y ppa:rael-gc/rvm
 	sudo apt-get update
 	sudo apt-get install rvm -y