diff --git a/tcp_tests/requirements.txt b/tcp_tests/requirements.txt
index e9c2917..462fa77 100644
--- a/tcp_tests/requirements.txt
+++ b/tcp_tests/requirements.txt
@@ -1,4 +1,5 @@
 # git+git://github.com/openstack/fuel-devops.git@887368d#egg=project[postgre]   # Use this requirement for PostgreSQL
+mock>=1.2,<4.0.0 # pinning first to avoid dependency meat grinder below
 libvirt-python>=3.5.0,<4.1.0  # LGPLv2+
 git+git://github.com/openstack/fuel-devops.git@10f4ac744e89bfefcba3d7d009de82669c52fa6e   # Use this requirement for Sqlite3, or if requirements for PostgreSQL are already installed
 git+git://github.com/dis-xcom/fuel-devops-driver-ironic
@@ -19,7 +20,6 @@
 salt-pepper<=0.5.3
 setuptools<=36.2.0
 netaddr
-mock>=1.2
 python-jenkins
 cmd2<0.9
 PyYAML!=5.1