diff --git a/requirements.txt b/requirements.txt
index be63ec5..d165b9c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -51,7 +51,7 @@ protobuf==3.10.0
 ptyprocess==0.6.0
 pycparser==2.19
 pyglet==1.3.2
-Pygments==2.2.0
+Pygments==2.7.4
 PyOpenGL==3.1.0
 pyparsing==2.2.1
 python-dateutil==2.6.1