diff --git a/book/src/requirements.txt b/book/src/requirements.txt
index 2dc82b0b..3939afd5 100644
--- a/book/src/requirements.txt
+++ b/book/src/requirements.txt
@@ -5,7 +5,7 @@ hypothesis==6.131.7
 isort==5.13.2
 MutPy==0.6.1
 mypy==1.15.0
-mypy-extensions==1.0.0
+mypy-extensions==1.1.0
 pinject==0.14.1
 pip-tools==7.4.1
 pyflakes==3.2.0