diff --git a/book/src/requirements.txt b/book/src/requirements.txt
index c50f6ae5..35f85ac5 100644
--- a/book/src/requirements.txt
+++ b/book/src/requirements.txt
@@ -1,4 +1,4 @@
-black==24.10.0
+black==25.1.0
 coverage==7.6.10
 flake8==7.1.1
 hypothesis==6.124.7