diff --git a/tcp_tests/requirements.txt b/tcp_tests/requirements.txt
index 5e01e35..d419b33 100644
--- a/tcp_tests/requirements.txt
+++ b/tcp_tests/requirements.txt
@@ -1,5 +1,5 @@
 # git+git://github.com/openstack/fuel-devops.git@887368d#egg=project[postgre]   # Use this requirement for PostgreSQL
-libvirt-python>=3.5.0, !=4.1.0  # LGPLv2+
+libvirt-python>=3.5.0,<4.1.0  # LGPLv2+
 git+git://github.com/openstack/fuel-devops.git@b8c6fe45a12b091619ba43cc14ab6cf05f0cd8f0   # Use this requirement for Sqlite3, or if requirements for PostgreSQL are already installed
 git+git://github.com/dis-xcom/fuel-devops-driver-ironic
 paramiko