diff --git a/dev_requirements.txt b/dev_requirements.txt
index d32c592..a404311 100644
--- a/dev_requirements.txt
+++ b/dev_requirements.txt
@@ -6,6 +6,6 @@ joblib==1.2.0
 numpy==1.22.0
 mpmath==1.3.0
 scipy==1.10.0
-Pygments==2.7.4
+Pygments==2.15.0
 sympy>=0.7.6
 git+https://github.com/goodok/sympy@sequences