diff --git a/requirements_dev.txt b/requirements_dev.txt
index eb17b0a..d79563c 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -48,7 +48,7 @@ pycodestyle==2.3.1
 pycparser==2.18
 pydocstyle==2.1.1
 pyflakes==2.0.0
-pygments==2.2.0
+pygments==2.9.0
 pylint==1.8.4
 pyparsing==2.2.0
 pytest-aiohttp==0.3.0