diff --git a/morphology-similarity/requirements.txt b/morphology-similarity/requirements.txt
index 83509ea..d61c32e 100644
--- a/morphology-similarity/requirements.txt
+++ b/morphology-similarity/requirements.txt
@@ -93,7 +93,7 @@ pyasn1-modules==0.2.8
 pycodestyle==2.5.0
 pycrypto==2.6.1
 pyemd==0.5.1
-Pygments==2.5.2
+Pygments==2.7.4
 pygobject==3.26.1
 pylint==2.4.4
 pyparsing==2.4.6