diff --git a/pyproject.toml b/pyproject.toml
index d579ac3..fcb61b7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,7 +38,7 @@ dependencies = [
     "astroquery >= 0.4.11",
     "numpy >= 2.3.5",
     "protobuf == 3.20",
-    "pytz >= 2025.2",
+    "pytz >= 2026.1.post1",
     "scipy >= 1.16.3",
     "spectral-cube >= 0.6.7",
 ]