diff --git a/doc/requirements.txt b/doc/requirements.txt
index 51ce090..a36ab39 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -20,7 +20,7 @@ pexpect==4.2.1
 pickleshare==0.7.4
 prompt-toolkit==1.0.7
 ptyprocess==0.5.1
-Pygments==2.7.4
+Pygments==2.15.0
 pyzmq==15.4.0
 qtconsole==4.2.1
 simplegeneric==0.8.1