diff --git a/requirements-dev.txt b/requirements-dev.txt
index 503779235..7c1a02043 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -67,6 +67,6 @@ torch==2.11.0 ; python_version >= "3.11" and python_version < "3.15"
 tqdm==4.67.3 ; python_version >= "3.11" and python_version < "3.15"
 triton==3.5.1 ; python_version >= "3.11" and python_version < "3.15" and platform_system == "Linux" and platform_machine == "x86_64"
 typing-extensions==4.15.0 ; python_version >= "3.11" and python_version < "3.15"
-tzdata==2025.3 ; python_version >= "3.11" and python_version < "3.15"
+tzdata==2026.1 ; python_version >= "3.11" and python_version < "3.15"
 urllib3==2.6.3 ; python_version >= "3.11" and python_version < "3.15"
 xarray==2026.2.0 ; python_version >= "3.11" and python_version < "3.15"
diff --git a/requirements.txt b/requirements.txt
index 21153a8a9..bfda9ecb9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -29,6 +29,6 @@ scipy==1.17.0 ; python_version >= "3.11" and python_version < "3.15"
 shapely==2.1.2 ; python_version >= "3.11" and python_version < "3.15"
 six==1.17.0 ; python_version >= "3.11" and python_version < "3.15"
 tqdm==4.67.3 ; python_version >= "3.11" and python_version < "3.15"
-tzdata==2025.3 ; python_version >= "3.11" and python_version < "3.15"
+tzdata==2026.1 ; python_version >= "3.11" and python_version < "3.15"
 urllib3==2.6.3 ; python_version >= "3.11" and python_version < "3.15"
 xarray==2026.2.0 ; python_version >= "3.11" and python_version < "3.15"