diff --git a/requirements.txt b/requirements.txt
index eb45e1e..b3ce176 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -88,7 +88,7 @@ pycodestyle==2.5.0
 pydocstyle==3.0.0
 pyflakes==2.1.1
 pyglet==1.3.2
-Pygments==2.3.1
+Pygments==2.7.4
 pylint==2.3.0
 PyOpenGL==3.1.0
 pyrsistent==0.14.11