diff --git a/requirements.txt b/requirements.txt
index 847ea1d..d2a2aa5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,7 +23,7 @@ PasteDeploy==1.5.2
 plaster==1.0
 plaster-pastedeploy==0.6
 psycopg2==2.8.3
-Pygments==2.2.0
+Pygments==2.7.4
 pymemcache==1.4.2
 pyparsing==2.2.0
 pyramid==1.9.1