diff --git a/requirements_dev.txt b/requirements_dev.txt
index 10b3a6f..8dd4252 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -17,7 +17,7 @@ prompt-toolkit==1.0.14
 ptyprocess==0.5.1
 pycodestyle==2.3.1
 pyflakes==1.5.0
-Pygments==2.2.0
+Pygments==2.7.4
 pyparsing==2.2.0
 scandir==1.5
 simplegeneric==0.8.1