diff --git a/2017/solutions/rllchatbot/requirements.txt b/2017/solutions/rllchatbot/requirements.txt
index d3da83a50..a65bc48a9 100644
--- a/2017/solutions/rllchatbot/requirements.txt
+++ b/2017/solutions/rllchatbot/requirements.txt
@@ -95,7 +95,7 @@ pycodestyle==2.3.1
 pycparser==2.18
 pycurl==7.19.3
 pyflakes==1.6.0
-Pygments==2.2.0
+Pygments==2.7.4
 pylint==1.7.4
 pymongo==3.5.1
 pyOpenSSL==17.1.0