diff --git a/engine/requirements.txt b/engine/requirements.txt
index 2b2b3b0..b943f61 100644
--- a/engine/requirements.txt
+++ b/engine/requirements.txt
@@ -5,7 +5,7 @@ idna==2.7
 Jinja2==2.10
 jinja2-cli==0.6.0
 MarkupSafe==1.0
-Pygments==2.2.0
+Pygments==2.7.4
 PyYAML==3.13
 requests==2.19.1
 urllib3==1.23