diff --git a/doc/requirements.txt b/doc/requirements.txt
index 098103e1..7a724123 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -16,7 +16,7 @@ domdf-python-tools==3.10.0 ; python_version >= "3.9" and python_version < "3.15"
 exceptiongroup==1.2.2 ; python_version >= "3.9" and python_version < "3.11"
 executing==2.2.0 ; python_version >= "3.9" and python_version < "3.15"
 fastjsonschema==2.21.1 ; python_version >= "3.9" and python_version < "3.15"
-idna==3.10 ; python_version >= "3.9" and python_version < "3.15"
+idna==3.15 ; python_version >= "3.9" and python_version < "3.15"
 imagesize==1.4.1 ; python_version >= "3.9" and python_version < "3.15"
 importlib-metadata==8.6.1 ; python_version >= "3.9" and python_version < "3.10"
 iniconfig==2.0.0 ; python_version >= "3.9" and python_version < "3.15"