diff --git a/src/test/clmctest/services/pytest/install.sh b/src/test/clmctest/services/pytest/install.sh
index a545894cd663fe5e162bdf0e93492faa1f70f876..f63ff21e3523a3a17e8cd7cee115b2dfc549ca49 100755
--- a/src/test/clmctest/services/pytest/install.sh
+++ b/src/test/clmctest/services/pytest/install.sh
@@ -27,5 +27,5 @@ apt-get update
 apt-get -y install python3 python3-pip python-influxdb  
 update-alternatives --install /usr/bin/python python /usr/bin/python3 10
 
-pip3 install pytest pyyaml
+pip3 install pytest pyyaml schema
 pip3 install --upgrade influxdb