diff --git a/.github/workflows/test_and_build.yaml b/.github/workflows/test_and_build.yaml
index f7cb70d..f5e8ba7 100644
--- a/.github/workflows/test_and_build.yaml
+++ b/.github/workflows/test_and_build.yaml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14", "3.15"]
+        python-version: ["3.11", "3.12", "3.13", "3.14", "3.15"]
 
     steps:
       - uses: actions/checkout@v7
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 090cbfd..4cba39e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,7 @@
 In Development
 --------------
 
-* Python 3.8 and 3.9 are no longer supported.
+* Python 3.8, 3.9 and 3.10 are no longer supported.
 * The `original` field of the returned validated email object incorrectly un-escaped the local part of the email address. Now it returns the original address, without any display name, as passed to validate_email.
 * add support python3.15
 
diff --git a/README.md b/README.md
index 5739337..99118f9 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@ email-validator: Validate Email Addresses
 =========================================
 
 A robust email address syntax and deliverability validation library for
-Python 3.10+ by [Joshua Tauberer](https://joshdata.me).
+Python 3.11+ by [Joshua Tauberer](https://joshdata.me).
 
 This library validates that a string is of the form `name@example.com`
 and optionally checks that the domain name is set up to receive email.
diff --git a/setup.cfg b/setup.cfg
index ad970d4..f1353b0 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -14,7 +14,6 @@ classifiers =
     Intended Audience :: Developers
     License :: OSI Approved :: The Unlicense (Unlicense)
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.10
     Programming Language :: Python :: 3.11
     Programming Language :: Python :: 3.12
     Programming Language :: Python :: 3.13
@@ -26,9 +25,9 @@ keywords = email address validator
 [options]
 packages = find:
 install_requires =
-    dnspython>=2.0.0 # optional if deliverability check isn't needed
-    idna>=2.0.0
-python_requires = >=3.10
+    dnspython>=2.9.0 # optional if deliverability check isn't needed
+    idna>=3.0.0
+python_requires = >=3.11
 
 [options.package_data]
 * = py.typed
diff --git a/test_requirements.txt b/test_requirements.txt
index 15c2f57..bea5d32 100644
--- a/test_requirements.txt
+++ b/test_requirements.txt
@@ -1,5 +1,5 @@
 # This file was generated by running:
-#   sudo docker run --rm -it --network=host python:3.10-slim /bin/bash
+#   sudo docker run --rm -it --network=host python:3.11-slim /bin/bash
 #   pip install dnspython idna # from setup.cfg
 #   pip install pytest pytest-cov coverage flake8 mypy
 #   pip freeze
@@ -7,23 +7,23 @@
 # the earliest Python version we support, and some exception
 # messages may depend on package versions, so we pin versions
 # for reproducible testing.)
-coverage==7.13.5
-dnspython==2.8.0
+coverage==7.16.2
+dnspython==2.9.0
 exceptiongroup==1.3.1
-flake8==7.3.0
-idna==3.15
-iniconfig==2.3.0
-librt==0.9.0
+flake8==7.4.1
+idna==3.20
+iniconfig==2.3.1
+librt==0.16.0
 mccabe==0.7.0
-mypy==1.20.1
+mypy==2.4.0
 mypy_extensions==1.1.0
-packaging==26.0
-pathspec==1.0.4
-pluggy==1.6.0
-pycodestyle==2.14.0
-pyflakes==3.4.0
-Pygments==2.20.0
-pytest==9.0.3
+packaging==26.3
+pathspec==1.1.1
+pluggy==1.7.0
+pycodestyle==2.15.0
+pyflakes==4.0.3
+Pygments==2.21.0
+pytest==9.1.1
 pytest-cov==7.1.0
-tomli==2.4.1
-typing_extensions==4.15.0
+tomli==2.5.0
+typing_extensions==4.16.0
diff --git a/tests/mocked_dns_response.py b/tests/mocked_dns_response.py
index 43508a3..a5ff82b 100644
--- a/tests/mocked_dns_response.py
+++ b/tests/mocked_dns_response.py
@@ -24,7 +24,7 @@
 class MockedDnsResponseData:
     DATA_PATH = os.path.dirname(__file__) + "/mocked-dns-answers.json"
 
-    INSTANCE = None
+    INSTANCE: Optional["MockedDnsResponseData"] = None
 
     @staticmethod
     def create_resolver() -> dns.resolver.Resolver: