diff --git a/.github/workflows/lint-and-fmt.yml b/.github/workflows/lint-and-fmt.yml
index a0ccd78..ee74313 100644
--- a/.github/workflows/lint-and-fmt.yml
+++ b/.github/workflows/lint-and-fmt.yml
@@ -13,7 +13,7 @@ jobs:
     strategy:
       matrix:
         # Only run linter and formatter on minimum supported Python version
-        python-version: ['3.10']
+        python-version: ['3.11']
         architecture: ['x64']
     name: lint and fmt - Python ${{ matrix.python-version }} on ${{ matrix.architecture }}
     steps:
diff --git a/.github/workflows/unit-test.yml b/.github/workflows/unit-test.yml
index 50a44fc..bc520ac 100644
--- a/.github/workflows/unit-test.yml
+++ b/.github/workflows/unit-test.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.10', '3.11', '3.12', '3.13', '3.14']
+        python-version: ['3.11', '3.12', '3.13', '3.14', '3.15']
         architecture: ['x64']
     name: unittest - Python ${{ matrix.python-version }} on ${{ matrix.architecture }}
     steps:
diff --git a/pyproject.toml b/pyproject.toml
index 1ee1f0a..0f5f058 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,7 +6,7 @@ build-backend = "maturin"
 name = "codespan-reporting"
 description = "A python binding for codespan-reporting"
 readme = "README.md"
-requires-python = ">=3.10"
+requires-python = ">=3.11"
 authors = [{ name = "Nyakku Shigure", email = "sigure.qaq@gmail.com" }]
 keywords = ["codespan-reporting"]
 license = "MIT"
@@ -15,11 +15,11 @@ classifiers = [
   "Programming Language :: Rust",
   "Programming Language :: Python",
   "Programming Language :: Python :: 3",
-  "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",
+  "Programming Language :: Python :: 3.15",
   "Programming Language :: Python :: Implementation :: CPython",
   "Programming Language :: Python :: Implementation :: PyPy",
 ]
@@ -30,7 +30,7 @@ dev = ["pytest>=7.4.4", "ruff==0.16.8", "ty>=0.0.32", "build"]
 
 [tool.ruff]
 line-length = 120
-target-version = "py310"
+target-version = "py311"
 
 [tool.ruff.lint]
 select = [