diff --git a/requirements_for_test.txt b/requirements_for_test.txt
index 391a9b75b..dbab7d519 100644
--- a/requirements_for_test.txt
+++ b/requirements_for_test.txt
@@ -6,7 +6,7 @@ pytest-cov==2.5.1
 pytest-xdist==1.20.1
 coveralls==1.2.0
 freezegun==0.3.9
-requests-mock==1.3.0
+requests-mock==1.4.0
 # optional requirements for jsonschema
 strict-rfc3339==0.7
 rfc3987==1.3.7