diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 3e705dce..93d0b6c0 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -22,12 +22,12 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        pyv: [ "3.9", "3.10", "3.11", "3.12", "3.13" ]
+        pyv: [ "3.10", "3.11", "3.12", "3.13", "3.14" ]
         reqs: [ "latest" ]
         include:
-          - pyv: "3.9"
+          - pyv: "3.10"
             reqs: earliest
-          - pyv: "3.13"
+          - pyv: "3.14"
             reqs: dev
 
     steps:
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 2bafa0f5..96b163f6 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -5,12 +5,12 @@ repos:
     - id: isort
       language_version: python3
 -   repo: https://github.com/ambv/black
-    rev: 22.3.0
+    rev: 24.10.0
     hooks:
     - id: black
       language_version: python3
       args:
-        - --target-version=py38
+        - --target-version=py310
 -   repo: https://github.com/pre-commit/pre-commit-hooks
     rev: v2.3.0
     hooks:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 30603476..fd5139c2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,7 @@ Unreleased
 * Added `AzureBlobFileSystem.rm_file()`
 * Keyword arguments for `put` and `put_file` are now proxied to the Azure Blob SDK client to 
   support specifying content settings, tags, and more.
+* Removed support for Python 3.9 and added support for Python 3.14.
 
 2025.8.0
 --------
diff --git a/adlfs/spec.py b/adlfs/spec.py
index 711b5827..3aaf5f9e 100644
--- a/adlfs/spec.py
+++ b/adlfs/spec.py
@@ -9,7 +9,6 @@
 import logging
 import os
 import re
-import sys
 import typing
 import warnings
 import weakref
@@ -2189,9 +2188,8 @@ def _get_chunks(self, data):
 
     async def _stage_block(self, data, start, end, block_id, semaphore):
         async with semaphore:
-            if self._sdk_supports_memoryview_for_writes():
-                # Use memoryview to avoid making copies of the bytes when we splice for partitioned uploads
-                data = memoryview(data)
+            # Use memoryview to avoid making copies of the bytes when we splice for partitioned uploads
+            data = memoryview(data)
             async with self.container_client.get_blob_client(blob=self.blob) as bc:
                 await bc.stage_block(
                     block_id=block_id,
@@ -2306,12 +2304,3 @@ def __setstate__(self, state):
         self.__dict__.update(state)
         self.loop = self._get_loop()
         self.container_client = self._get_container_client()
-
-    def _sdk_supports_memoryview_for_writes(self) -> bool:
-        # The SDK validates iterable bytes objects passed to its HTTP request layer
-        # expose an __iter__() method. However, memoryview objects did not expose an
-        # __iter__() method till Python 3.10.
-        #
-        # We still want to leverage memorviews when we can to avoid unnecessary copies. So
-        # we check the Python version to determine if we can use memoryviews for writes.
-        return sys.version_info >= (3, 10)
diff --git a/pyproject.toml b/pyproject.toml
index ba598a12..ae6a5ce2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -15,14 +15,14 @@ classifiers = [
     "Intended Audience :: Developers",
     "License :: OSI Approved :: BSD License",
     "Operating System :: OS Independent",
-    "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",
+    "Programming Language :: Python :: 3.14",
 ]
 keywords = ["file-system", "dask", "azure"]
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 dynamic = ["version"]
 dependencies = [
     "azure-core>=1.28.0,<2.0.0",