diff --git a/.github/workflows/.tests-python.yml b/.github/workflows/.tests-python.yml
index e3da4f7..d64580a 100644
--- a/.github/workflows/.tests-python.yml
+++ b/.github/workflows/.tests-python.yml
@@ -12,7 +12,7 @@ jobs:
     container: python:${{ matrix.python-version }}
     strategy:
       matrix:
-        python-version:  [ "3.9", "3.10", "3.11", "3.12", "3.13" ]
+        python-version:  [ "3.10", "3.11", "3.12", "3.13" ]
     steps:
       - uses: actions/checkout@v4
 
diff --git a/mypy.ini b/mypy.ini
index a21f37d..a9bad9c 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -1,6 +1,6 @@
 # Global options:
 
 [mypy]
-python_version = 3.9
+python_version = 3.10
 disallow_untyped_defs = True
 ignore_missing_imports = True
diff --git a/poetry.lock b/poetry.lock
index 3d60157..a937087 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 2.1.3 and should not be changed by hand.
+# This file is automatically @generated by Poetry 2.3.2 and should not be changed by hand.
 
 [[package]]
 name = "cachecontrol"
@@ -468,7 +468,7 @@ description = "A lil' TOML parser"
 optional = true
 python-versions = ">=3.8"
 groups = ["main"]
-markers = "extra == \"dev\" and python_version < \"3.11\""
+markers = "extra == \"dev\" and python_version == \"3.10\""
 files = [
     {file = "tomli-2.2.1-cp311-cp311-macosx_10_9_x86_64.whl", hash = "sha256:678e4fa69e4575eb77d103de3df8a895e1591b48e740211bd1067378c69e8249"},
     {file = "tomli-2.2.1-cp311-cp311-macosx_11_0_arm64.whl", hash = "sha256:023aa114dd824ade0100497eb2318602af309e5a55595f76b626d6d9f3b7b0a6"},
@@ -557,5 +557,5 @@ filecache = ["filelock"]
 
 [metadata]
 lock-version = "2.1"
-python-versions = ">=3.9"
-content-hash = "bab39529664dc819d2650b567842b5c24741efbd78c91373fcbf470abd746da6"
+python-versions = ">=3.10"
+content-hash = "f7245edd61ad06ad23ba40aa872c82b8ddaa3fb5fc76dafdb5fb3325666a1fd3"
diff --git a/pyproject.toml b/pyproject.toml
index bb09930..5b7f1c8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -15,14 +15,13 @@ classifiers = [
     "License :: OSI Approved :: Apache Software License",
     "Operating System :: POSIX :: Linux",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
 ]
 
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 
 dependencies = [
     "cachecontrol>=0.14.3",
diff --git a/staticmap3/staticmap.py b/staticmap3/staticmap.py
index a929cc8..6607e3a 100644
--- a/staticmap3/staticmap.py
+++ b/staticmap3/staticmap.py
@@ -463,7 +463,7 @@ def _draw_base_layer(self, image: "Image.Image") -> None:
                 for tile in tiles
             ]
 
-            for tile, future in zip(tiles, futures):
+            for tile, future in zip(tiles, futures, strict=True):
                 x, y, url = tile
 
                 try: