diff --git a/2013-05/requirements-dev.txt b/2013-05/requirements-dev.txt
index 9ebcdcc..3176e3e 100644
--- a/2013-05/requirements-dev.txt
+++ b/2013-05/requirements-dev.txt
@@ -2,7 +2,7 @@
 nose==1.1.2
 mock==0.8.0
 lxml==2.3.3
-Pygments==1.5
+Pygments==2.7.4
 Sphinx==1.1.3
 docutils==0.9.1
 honcho==0.2.0