diff --git a/builder/chroot-script.sh b/builder/chroot-script.sh
index 770bb05..c3161f3 100644
--- a/builder/chroot-script.sh
+++ b/builder/chroot-script.sh
@@ -220,7 +220,7 @@ cd /var/www/
 
 # install infragram in the web public folder:
 # prerequisites:
-sudo apt-get install -y build-essential libxi-dev libglu1-mesa-dev libglew-dev pkg-config python2.7 python2.7-dev
+sudo apt-get install -y build-essential libxi-dev libglu1-mesa-dev libglew-dev pkg-config python python-dev
 git clone https://github.com/publiclab/infragram.git
 cd infragram
 npm install