diff --git a/brew-formulas.txt b/brew-formulas.txt
index b5b555e2a0..e06829a43a 100644
--- a/brew-formulas.txt
+++ b/brew-formulas.txt
@@ -1,10 +1,11 @@
-readline 
-sqlite 
-gdbm 
-pkg-config 
-gfortran 
-python 
-yuicompressor 
+readline
+sqlite
+gdbm
+pkg-config
+gfortran
+python
+yuicompressor
 node
 graphviz
 mysql
+geos
diff --git a/create-dev-env.sh b/create-dev-env.sh
index e481d3fd5e..2a7f68d3b0 100755
--- a/create-dev-env.sh
+++ b/create-dev-env.sh
@@ -99,7 +99,7 @@ NUMPY_VER="1.6.2"
 SCIPY_VER="0.10.1"
 BREW_FILE="$BASE/mitx/brew-formulas.txt"
 LOG="/var/tmp/install-$(date +%Y%m%d-%H%M%S).log"
-APT_PKGS="pkg-config curl git python-virtualenv build-essential python-dev gfortran liblapack-dev libfreetype6-dev libpng12-dev libxml2-dev libxslt-dev yui-compressor nodejs npm graphviz graphviz-dev mysql-server libmysqlclient-dev"
+APT_PKGS="pkg-config curl git python-virtualenv build-essential python-dev gfortran liblapack-dev libfreetype6-dev libpng12-dev libxml2-dev libxslt-dev yui-compressor nodejs npm graphviz graphviz-dev mysql-server libmysqlclient-dev geos"
 
 if [[ $EUID -eq 0 ]]; then
     error "This script should not be run using sudo or as the root user"