diff --git a/dev-requirements.txt b/dev-requirements.txt
index c3e517e1..1ecd24fe 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -2,4 +2,4 @@ flask==1.0.2
 pytest==3.6.2
 pytest-cov==2.5.1
 codacy-coverage==1.3.11
-requests-mock==1.5.2
+requests-mock==1.6.0