diff --git a/requirements-dev.txt b/requirements-dev.txt
index c8a93ba..a84b833 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -40,7 +40,7 @@ pluggy==0.13.1; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2
 py==1.8.2; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
 pycodestyle==2.6.0; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
 pyflakes==2.2.0; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
-pygments==2.6.1; python_version >= '3.5'
+pygments==2.15.0; python_version >= '3.5'
 pylint==2.5.3
 pyparsing==2.4.7; python_version >= '2.6' and python_version not in '3.0, 3.1, 3.2, 3.3'
 pytest==5.4.3