diff --git a/modules/imagemat/requirements.txt b/modules/imagemat/requirements.txt
index 80e9605..71ade6d 100644
--- a/modules/imagemat/requirements.txt
+++ b/modules/imagemat/requirements.txt
@@ -35,7 +35,7 @@ pickleshare==0.7.2
 Pillow==3.2.0
 ptyprocess==0.5.1
 pycairo==1.10.0
-Pygments==2.1.3
+Pygments==2.7.4
 pyparsing==2.1.1
 python-dateutil==2.5.3
 pytz==2016.4