diff --git a/requirements_test.txt b/requirements_test.txt
index fb56ecf..d6f0943 100644
--- a/requirements_test.txt
+++ b/requirements_test.txt
@@ -56,7 +56,7 @@ pyflakes==0.8.1
     # via
     #   flake8
     #   hacking
-pygments==2.2.0
+pygments==2.7.4
     # via
     #   -r requirements_test.in
     #   sphinx