diff --git a/requirements.txt b/requirements.txt
index c6ac543..b3e4eb4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,7 +23,7 @@ prompt-toolkit==1.0.15
 protobuf==3.5.0.post1
 ptyprocess==0.5.2
 pyglet==1.3.0
-Pygments==2.2.0
+Pygments==2.7.4
 PyOpenGL==3.1.0
 requests==2.18.4
 scandir==1.6