diff --git a/requirements.txt b/requirements.txt
index 3a06e6d..a6592a8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,7 +17,7 @@ pickleshare==0.7.4
 Pillow==4.2.1
 prompt-toolkit==1.0.15
 ptyprocess==0.5.2
-Pygments==2.2.0
+Pygments==2.7.4
 pyparsing==2.2.0
 pyserial==3.4
 python-dateutil==2.6.1