diff --git a/requirements.txt b/requirements.txt
index 58d13e8..771cdb8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -74,7 +74,7 @@ pycodestyle==2.5.0
 pycparser==2.19
 pyflakes==2.1.1
 pyglet==1.3.2
-Pygments==2.3.1
+Pygments==2.7.4
 pyparsing==2.3.1
 pyquaternion==0.9.5
 pytest==5.3.5