diff --git a/requirements_dev.txt b/requirements_dev.txt
index a5bd712..b576cae 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -22,7 +22,7 @@ pyasn1==0.3.1
 pycodestyle==2.3.1
 pycparser==2.18
 pyflakes==1.5.0
-Pygments==2.2.0
+Pygments==2.7.4
 pytz==2017.2
 PyYAML==3.12
 requests==2.18.2