diff --git a/test-requirements.txt b/test-requirements.txt
index 3661a7fa..5e9031af 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -27,3 +27,4 @@ sphinx!=1.2.0,!=1.3b1,<1.3,>=1.1.2 # BSD
 os-client-config>=1.13.1 # Apache-2.0
 oslosphinx!=3.4.0,>=2.5.0 # Apache-2.0
 openstack-doc-tools>=0.23 # Apache-2.0
+requests-mock>=1.0  # Apache-2.0