diff --git a/elements/os-svc-install/install.d/04-os-svc-install b/elements/os-svc-install/install.d/04-os-svc-install
index 1752f0693..42dc0a4bc 100755
--- a/elements/os-svc-install/install.d/04-os-svc-install
+++ b/elements/os-svc-install/install.d/04-os-svc-install
@@ -7,7 +7,7 @@ install-packages python-pip libmysqlclient-dev
 pip install -U distribute # required by virtualenv
 # required to ensure clean distribute -> setuptools migration
 pip install -U setuptools
-pip install -U virtualenv
+pip install -U 'virtualenv==1.10.1'
 
 install -m 0755 -o root -g root $(dirname $0)/../bin/os-svc-install /usr/local/bin/os-svc-install
 install -m 0755 -o root -g root $(dirname $0)/../bin/os-svc-daemon  /usr/local/bin/os-svc-daemon