diff --git a/book/src/requirements.txt b/book/src/requirements.txt
index ae2b1eb8..6b946365 100644
--- a/book/src/requirements.txt
+++ b/book/src/requirements.txt
@@ -1,4 +1,4 @@
-black==24.10.0
+black==25.1.0
 coverage==7.6.12
 flake8==7.1.2
 hypothesis==6.127.6