diff --git a/requirements.txt b/requirements.txt
index 7e9b073..a88bfa4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -46,7 +46,7 @@ plotnine==0.2.1
 prompt-toolkit==1.0.15
 ptyprocess==0.5.2
 py==1.4.34
-Pygments==2.2.0
+Pygments==2.7.4
 pyparsing==2.2.0
 pytest==3.2.2
 python-dateutil==2.6.1