diff --git a/requirements-dev.txt b/requirements-dev.txt
index 93f265c..5fe18b0 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -2,4 +2,4 @@ pytest>=9.0.3
 pytest-asyncio>=1.3.0
 pytest-cov>=7.1.0
 ruff>=0.15.13
-tzdata>=2026.2
+tzdata>=2026.3