diff --git a/.github/workflows/python.yml b/.github/workflows/python.yml
index f432150f..834b7f58 100644
--- a/.github/workflows/python.yml
+++ b/.github/workflows/python.yml
@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     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/README.md b/README.md
index c602d7d0..57f3f641 100644
--- a/README.md
+++ b/README.md
@@ -468,7 +468,7 @@ For more information, please visit [https://support.launchdarkly.com](https://su
 
 ## Requirements.
 
-Python 3.9+
+Python 3.10+
 
 ## Installation & Usage
 ### pip install
diff --git a/pyproject.toml b/pyproject.toml
index 46485d3c..47863a76 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -8,10 +8,10 @@ authors = [
 license = { text = "Apache 2.0" }
 readme = "README.md"
 keywords = ["OpenAPI", "OpenAPI-Generator", "LaunchDarkly REST API"]
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 
 dependencies = [
-  "urllib3 (>=2.1.0,<3.0.0)",
+  "urllib3 (>=2.7.0,<3.0.0)",
   "python-dateutil (>=2.8.2)",
   "pydantic (>=2)",
   "typing-extensions (>=4.7.1)",
@@ -24,12 +24,13 @@ Repository = "https://github.com/launchdarkly/api-client-python"
 requires-poetry = ">=2.0"
 
 [tool.poetry.group.dev.dependencies]
-pytest = ">= 7.2.1"
+pytest = ">= 9.0.3"
 pytest-cov = ">= 2.8.1"
 tox = ">= 3.9.0"
 flake8 = ">= 4.0.0"
 types-python-dateutil = ">= 2.8.19.14"
 mypy = ">= 1.5"
+filelock = ">= 3.20.3"
 
 
 [build-system]
diff --git a/requirements.txt b/requirements.txt
index 6cbb2b98..f3bc0698 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-urllib3 >= 2.1.0, < 3.0.0
+urllib3 >= 2.7.0, < 3.0.0
 python_dateutil >= 2.8.2
 pydantic >= 2
 typing-extensions >= 4.7.1
diff --git a/setup.py b/setup.py
index 87b4ab84..1c0134ab 100644
--- a/setup.py
+++ b/setup.py
@@ -23,9 +23,9 @@
 # http://pypi.python.org/pypi/setuptools
 NAME = "launchdarkly-api"
 VERSION = "24.0.0"
-PYTHON_REQUIRES = ">= 3.9"
+PYTHON_REQUIRES = ">= 3.10"
 REQUIRES = [
-    "urllib3 >= 2.1.0, < 3.0.0",
+    "urllib3 >= 2.7.0, < 3.0.0",
     "python-dateutil >= 2.8.2",
     "pydantic >= 2",
     "typing-extensions >= 4.7.1",
diff --git a/test-requirements.txt b/test-requirements.txt
index e98555c1..b24b21ae 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,6 +1,7 @@
-pytest >= 7.2.1
+pytest >= 9.0.3
 pytest-cov >= 2.8.1
 tox >= 3.9.0
 flake8 >= 4.0.0
 types-python-dateutil >= 2.8.19.14
 mypy >= 1.5
+filelock >= 3.20.3