diff --git a/provision.sh b/provision.sh
index 2fbb3b69..08ed95c6 100644
--- a/provision.sh
+++ b/provision.sh
@@ -49,8 +49,8 @@ apt-get install -y libgdbm-dev libncurses5-dev automake libtool bison libffi-dev
 gpg --keyserver hkp://keys.gnupg.net --recv-keys D39DC0E3
 curl -L https://get.rvm.io | bash -s stable
 source /etc/profile.d/rvm.sh
-rvm install 2.1.5
-rvm use 2.1.5 --default
+rvm install 2.3.1
+rvm use 2.3.1 --default
 ruby -v
 
 # rails