diff --git a/README.md b/README.md
index 2d4c7d0..eeac041 100644
--- a/README.md
+++ b/README.md
@@ -25,6 +25,8 @@ To install `fastapi-code-generator`:
 $ pip install fastapi-code-generator
 ```
 
+> **Note:** Python 3.13 is supported from version 0.5.5 and later. If you're on Python 3.13, ensure you install at least version 0.5.5.
+
 ## Usage
 
 The `fastapi-code-generator` command:
diff --git a/pyproject.toml b/pyproject.toml
index f510746..d5200fe 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "fastapi-code-generator"
-version = "0.5.4"
+version = "0.5.5"
 description = ""
 authors = ["Koudai Aono <koxudaxi@gmail.com>"]
 readme = "README.md"
@@ -17,6 +17,7 @@ classifiers = [
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
         "Programming Language :: Python :: 3.12",
+        "Programming Language :: Python :: 3.13",
         "Programming Language :: Python :: Implementation :: CPython"
 ]
 
@@ -29,7 +30,7 @@ pattern = "^(?P<base>\\d+\\.\\d+\\.\\d+)(-?((?P<stage>[a-zA-Z]+)\\.?(?P<revision
 fastapi-codegen = "fastapi_code_generator.__main__:app"
 
 [tool.poetry.dependencies]
-python = ">=3.9,<3.13"
+python = ">=3.9,<3.14"
 typer = {extras = ["all"], version = ">=0.2.1,<0.13.0"}
 datamodel-code-generator =  {extras = ["http"], version = "0.30.1"}
 stringcase = "^1.2.0"