diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b3f9100..8665df6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,7 +16,7 @@ jobs:
 
     strategy:
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
 
     steps:
       - uses: actions/checkout@v4
@@ -49,7 +49,7 @@ jobs:
 
     strategy:
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
 
     steps:
       - uses: actions/checkout@v4
diff --git a/.github/workflows/manual-publish.yml b/.github/workflows/manual-publish.yml
index a5387fe..d72c2d6 100644
--- a/.github/workflows/manual-publish.yml
+++ b/.github/workflows/manual-publish.yml
@@ -25,7 +25,7 @@ jobs:
 
       - uses: actions/setup-python@v5
         with:
-          python-version: 3.9
+          python-version: "3.10"
 
       - uses: launchdarkly/gh-actions/actions/release-secrets@release-secrets-v1.2.0
         name: 'Get PyPI token'
diff --git a/.github/workflows/release-please.yml b/.github/workflows/release-please.yml
index 113c43e..db26169 100644
--- a/.github/workflows/release-please.yml
+++ b/.github/workflows/release-please.yml
@@ -30,7 +30,7 @@ jobs:
       - uses: actions/setup-python@v5
         if: ${{ steps.release.outputs.releases_created == 'true' }}
         with:
-          python-version: 3.9
+          python-version: "3.10"
 
       - uses: launchdarkly/gh-actions/actions/release-secrets@release-secrets-v1.2.0
         if: ${{ steps.release.outputs.releases_created == 'true' }}
diff --git a/README.md b/README.md
index 785a63f..b36348b 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ LaunchDarkly overview
 Supported Python versions
 -----------------------
 
-This version of the library has a minimum Python version of 3.9.
+This version of the library has a minimum Python version of 3.10.
 
 Getting started
 -----------
diff --git a/pyproject.toml b/pyproject.toml
index e9ea432..233285e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -13,11 +13,11 @@ classifiers = [
     "License :: OSI Approved :: Apache Software License",
     "Operating System :: OS Independent",
     "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",
+    "Programming Language :: Python :: 3.14",
     "Topic :: Software Development",
     "Topic :: Software Development :: Libraries",
 ]
@@ -27,7 +27,7 @@ exclude = [
 ]
 
 [tool.poetry.dependencies]
-python = ">=3.9"
+python = ">=3.10"
 launchdarkly-server-sdk = ">=9.4.0"
 opentelemetry-sdk = ">=1.24.0"
 
@@ -55,7 +55,7 @@ urllib3 = ">=1.26.0"
 jinja2 = "3.1.6"
 
 [tool.mypy]
-python_version = "3.9"
+python_version = "3.10"
 ignore_missing_imports = true
 install_types = true
 non_interactive = true