diff --git a/dev-requirements.txt b/dev-requirements.txt
index 6745a13..2617a79 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -8,7 +8,7 @@ pydata-sphinx-theme==0.7.1
 Sphinx==4.2.0
 nbconvert==6.4.5
 ipython==7.16.3
-pygments==2.8.1
+pygments==2.15.0
 jupyter==1.0.0
 pandoc==1.0.2
 ipykernel==5.3.4