diff --git a/install_modules.sh b/install_modules.sh
index caa70c4553..a375086956 100755
--- a/install_modules.sh
+++ b/install_modules.sh
@@ -45,7 +45,7 @@ MODULES["puppetlabs-apache"]="0.0.4"
 MODULES["puppetlabs-apt"]="1.4.2"
 MODULES["puppetlabs-haproxy"]="0.4.1"
 MODULES["puppetlabs-mysql"]="0.6.1"
-MODULES["puppetlabs-postgresql"]="3.4.1"
+MODULES["puppetlabs-postgresql"]="4.0.0"
 MODULES["puppetlabs-stdlib"]="4.3.2"
 MODULES["saz-memcached"]="2.0.2"
 MODULES["spiette-selinux"]="0.5.1"