diff --git a/requirements.txt b/requirements.txt
index d660f3a..4939bdd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ certifi==2026.1.4
 click==8.3.1
 frozenlist==1.8.0
 hiredis==3.3.0
-idna==3.11
+idna==3.15
 jmespath==1.0.1
 multidict==6.7.0
 openttd-helpers==2.0.0