diff --git a/requirements.txt b/requirements.txt
index e6fcc15..c9beeb1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 tornado==4.5.3
 mkdocs==0.16.3
 git+git://github.com/Scifabric/mkdocs-material-pybossa.git@pybossa#egg=mkdocs-material
-pygments==2.2
+pygments==2.7.4
 pymdown-extensions==3.4