diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9ca8752..206c607 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,7 +11,7 @@ jobs:
   ci:
     strategy:
       matrix:
-        python-version: ["3.12", "3.13", "3.14", "3.14t"]
+        python-version: ["3.12", "3.13", "3.14", "3.14t", "3.15", "3.15t"]
 
     name: Continuous Integration ・ Python ${{ matrix.python-version }}
     runs-on: ubuntu-latest
diff --git a/pyproject.toml b/pyproject.toml
index 13c40a1..23f73ba 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -29,7 +29,7 @@ description = "Dead-simple dependency injection framework for Python."
 license = "MIT"
 license-files = ["LICENSE"]
 readme = "docs/index.md"
-requires-python = ">=3.12, <3.15"
+requires-python = ">=3.12, <3.16"
 authors = [{ name = "remimd" }]
 keywords = ["dependencies", "dependency", "inject", "injection"]
 classifiers = [
diff --git a/uv.lock b/uv.lock
index ffb1cee..042519c 100644
--- a/uv.lock
+++ b/uv.lock
@@ -1,6 +1,10 @@
 version = 1
 revision = 3
-requires-python = ">=3.12, <3.15"
+requires-python = ">=3.12, <3.16"
+resolution-markers = [
+    "python_full_version >= '3.15'",
+    "python_full_version < '3.15'",
+]
 
 [[package]]
 name = "annotated-doc"