diff --git a/book/src/requirements.txt b/book/src/requirements.txt
index b5b05a08..263c17da 100644
--- a/book/src/requirements.txt
+++ b/book/src/requirements.txt
@@ -11,7 +11,7 @@ pip-tools==7.4.1
 pyflakes==3.2.0
 pylint==3.3.6
 pytest==8.3.5
-pytest-cov==5.0.0
+pytest-cov==6.1.0
 pytype==2024.9.13
 requests==2.32.3
 yapf==0.43.0