diff --git a/functional-tests/requirements.txt b/functional-tests/requirements.txt
index 776c4e6d5a..735a486b1e 100644
--- a/functional-tests/requirements.txt
+++ b/functional-tests/requirements.txt
@@ -4,7 +4,7 @@ certifi==2026.1.4
 charset-normalizer==3.4.4
 click==8.3.1
 Flask==3.1.2
-idna==3.11
+idna==3.15
 iniconfig==2.3.0
 itsdangerous==2.2.0
 Jinja2==3.1.6