diff --git a/requirements.txt b/requirements.txt
index 0681149..033fd11 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -121,7 +121,7 @@ markupsafe>=2.1.3
 mistune>=3.0.1
 nbclient>=0.8.0
 pandocfilters>=1.5.0
-pygments>=2.15.1
+pygments>=2.21.0
 tinycss2>=1.2.1
 
 # Additional utilities