diff --git a/src/text2graph/requirements.txt b/src/text2graph/requirements.txt
index fd19de4bc..780b8c892 100644
--- a/src/text2graph/requirements.txt
+++ b/src/text2graph/requirements.txt
@@ -76,7 +76,7 @@ ptyprocess==0.6.0
 pycodestyle==2.5.0
 pycparser==2.19
 pyflakes==2.1.0
-Pygments==2.3.1
+Pygments==2.7.4
 pylint==2.2.2
 pyOpenSSL==19.0.0
 pyparsing==2.3.1