diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonNextgenClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonNextgenClientCodegen.java
index 5f29c5c909a..b2bb11e4f37 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonNextgenClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonNextgenClientCodegen.java
@@ -321,6 +321,7 @@ public class PythonNextgenClientCodegen extends AbstractPythonCodegen implements
             supportingFiles.add(new SupportingFile("github-workflow.mustache", ".github/workflows", "python.yml"));
             supportingFiles.add(new SupportingFile("gitlab-ci.mustache", "", ".gitlab-ci.yml"));
             supportingFiles.add(new SupportingFile("setup.mustache", "", "setup.py"));
+            supportingFiles.add(new SupportingFile("pyproject.mustache", "", "pyproject.toml"));
         }
         supportingFiles.add(new SupportingFile("configuration.mustache", packagePath(), "configuration.py"));
         supportingFiles.add(new SupportingFile("__init__package.mustache", packagePath(), "__init__.py"));
diff --git a/modules/openapi-generator/src/main/resources/python-nextgen/README.mustache b/modules/openapi-generator/src/main/resources/python-nextgen/README.mustache
index ae4af162a14..201df14f1b4 100644
--- a/modules/openapi-generator/src/main/resources/python-nextgen/README.mustache
+++ b/modules/openapi-generator/src/main/resources/python-nextgen/README.mustache
@@ -48,6 +48,10 @@ Then import the package:
 import {{{packageName}}}
 ```
 
+### Tests
+
+Execute `pytest` to run the tests.
+
 ## Getting Started
 
 Please follow the [installation procedure](#installation--usage) and then run the following:
diff --git a/modules/openapi-generator/src/main/resources/python-nextgen/pyproject.mustache b/modules/openapi-generator/src/main/resources/python-nextgen/pyproject.mustache
new file mode 100644
index 00000000000..192ca581341
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-nextgen/pyproject.mustache
@@ -0,0 +1,36 @@
+[tool.poetry]
+name = "{{{packageName}}}"
+version = "{{{packageVersion}}}"
+description = "{{{appName}}}"
+authors = ["{{infoEmail}}{{^infoEmail}}team@openapitools.org{{/infoEmail}}"]
+license = "{{{licenseInfo}}}{{^licenseInfo}}NoLicense{{/licenseInfo}}"
+readme = "README.md"
+repository = "https://github.com/{{{gitRepoId}}}/{{{gitUserId}}}"
+keywords = ["OpenAPI", "OpenAPI-Generator", "{{{appName}}}"]
+
+[tool.poetry.dependencies]
+python = "^3.7"
+
+urllib3 = ">= 1.25.3"
+python-dateutil = ">=2.8.2"
+{{#asyncio}}
+aiohttp = ">= 3.8.4"
+{{/asyncio}}
+{{#tornado}}
+tornado = ">=4.2,<5"
+{{/tornado}}
+{{#hasHttpSignatureMethods}}
+pem = ">= 19.3.0"
+pycryptodome = ">= 3.9.0"
+{{/hasHttpSignatureMethods}}
+pydantic = ">= 1.10.5"
+aenum = ">=3.1.11"
+
+[tool.poetry.dev-dependencies]
+pytest = ">=7.2.1"
+tox = ">=4.4.6"
+flake8 = ">=6.0.0"
+
+[build-system]
+requires = ["setuptools"]
+build-backend = "setuptools.build_meta"
diff --git a/samples/client/echo_api/python-nextgen/.openapi-generator/FILES b/samples/client/echo_api/python-nextgen/.openapi-generator/FILES
index 134546f8564..82a301a4b1f 100644
--- a/samples/client/echo_api/python-nextgen/.openapi-generator/FILES
+++ b/samples/client/echo_api/python-nextgen/.openapi-generator/FILES
@@ -43,6 +43,7 @@ openapi_client/models/tag.py
 openapi_client/models/test_query_style_deep_object_explode_true_object_all_of_query_object_parameter.py
 openapi_client/models/test_query_style_form_explode_true_array_string_query_object_parameter.py
 openapi_client/rest.py
+pyproject.toml
 requirements.txt
 setup.cfg
 setup.py
diff --git a/samples/client/echo_api/python-nextgen/README.md b/samples/client/echo_api/python-nextgen/README.md
index b945386e85c..0161a1364cd 100644
--- a/samples/client/echo_api/python-nextgen/README.md
+++ b/samples/client/echo_api/python-nextgen/README.md
@@ -40,6 +40,10 @@ Then import the package:
 import openapi_client
 ```
 
+### Tests
+
+Execute `pytest` to run the tests.
+
 ## Getting Started
 
 Please follow the [installation procedure](#installation--usage) and then run the following:
diff --git a/samples/client/echo_api/python-nextgen/pyproject.toml b/samples/client/echo_api/python-nextgen/pyproject.toml
new file mode 100644
index 00000000000..a1ad217c190
--- /dev/null
+++ b/samples/client/echo_api/python-nextgen/pyproject.toml
@@ -0,0 +1,26 @@
+[tool.poetry]
+name = "openapi_client"
+version = "1.0.0"
+description = "Echo Server API"
+authors = ["team@openapitools.org"]
+license = "Apache 2.0"
+readme = "README.md"
+repository = "https://github.com/GIT_REPO_ID/GIT_USER_ID"
+keywords = ["OpenAPI", "OpenAPI-Generator", "Echo Server API"]
+
+[tool.poetry.dependencies]
+python = "^3.7"
+
+urllib3 = ">= 1.25.3"
+python-dateutil = ">=2.8.2"
+pydantic = ">= 1.10.5"
+aenum = ">=3.1.11"
+
+[tool.poetry.dev-dependencies]
+pytest = ">=7.2.1"
+tox = ">=4.4.6"
+flake8 = ">=6.0.0"
+
+[build-system]
+requires = ["setuptools"]
+build-backend = "setuptools.build_meta"
diff --git a/samples/openapi3/client/petstore/python-nextgen-aiohttp/.openapi-generator/FILES b/samples/openapi3/client/petstore/python-nextgen-aiohttp/.openapi-generator/FILES
index c2f43506f98..8e90f16b24f 100644
--- a/samples/openapi3/client/petstore/python-nextgen-aiohttp/.openapi-generator/FILES
+++ b/samples/openapi3/client/petstore/python-nextgen-aiohttp/.openapi-generator/FILES
@@ -144,6 +144,7 @@ petstore_api/models/user.py
 petstore_api/models/with_nested_one_of.py
 petstore_api/rest.py
 petstore_api/signing.py
+pyproject.toml
 requirements.txt
 setup.cfg
 setup.py
diff --git a/samples/openapi3/client/petstore/python-nextgen-aiohttp/README.md b/samples/openapi3/client/petstore/python-nextgen-aiohttp/README.md
index d9db0c5fce3..2a6511e7b74 100644
--- a/samples/openapi3/client/petstore/python-nextgen-aiohttp/README.md
+++ b/samples/openapi3/client/petstore/python-nextgen-aiohttp/README.md
@@ -40,6 +40,10 @@ Then import the package:
 import petstore_api
 ```
 
+### Tests
+
+Execute `pytest` to run the tests.
+
 ## Getting Started
 
 Please follow the [installation procedure](#installation--usage) and then run the following:
diff --git a/samples/openapi3/client/petstore/python-nextgen-aiohttp/pyproject.toml b/samples/openapi3/client/petstore/python-nextgen-aiohttp/pyproject.toml
new file mode 100644
index 00000000000..3c1002a8445
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-nextgen-aiohttp/pyproject.toml
@@ -0,0 +1,29 @@
+[tool.poetry]
+name = "petstore_api"
+version = "1.0.0"
+description = "OpenAPI Petstore"
+authors = ["team@openapitools.org"]
+license = "Apache-2.0"
+readme = "README.md"
+repository = "https://github.com/GIT_REPO_ID/GIT_USER_ID"
+keywords = ["OpenAPI", "OpenAPI-Generator", "OpenAPI Petstore"]
+
+[tool.poetry.dependencies]
+python = "^3.7"
+
+urllib3 = ">= 1.25.3"
+python-dateutil = ">=2.8.2"
+aiohttp = ">= 3.8.4"
+pem = ">= 19.3.0"
+pycryptodome = ">= 3.9.0"
+pydantic = ">= 1.10.5"
+aenum = ">=3.1.11"
+
+[tool.poetry.dev-dependencies]
+pytest = ">=7.2.1"
+tox = ">=4.4.6"
+flake8 = ">=6.0.0"
+
+[build-system]
+requires = ["setuptools"]
+build-backend = "setuptools.build_meta"
diff --git a/samples/openapi3/client/petstore/python-nextgen/.openapi-generator/FILES b/samples/openapi3/client/petstore/python-nextgen/.openapi-generator/FILES
index f5e76be9e49..0bd7787dea2 100755
--- a/samples/openapi3/client/petstore/python-nextgen/.openapi-generator/FILES
+++ b/samples/openapi3/client/petstore/python-nextgen/.openapi-generator/FILES
@@ -144,6 +144,7 @@ petstore_api/models/user.py
 petstore_api/models/with_nested_one_of.py
 petstore_api/rest.py
 petstore_api/signing.py
+pyproject.toml
 requirements.txt
 setup.cfg
 setup.py
diff --git a/samples/openapi3/client/petstore/python-nextgen/README.md b/samples/openapi3/client/petstore/python-nextgen/README.md
index 0f1d86506a4..00f4adf15c5 100755
--- a/samples/openapi3/client/petstore/python-nextgen/README.md
+++ b/samples/openapi3/client/petstore/python-nextgen/README.md
@@ -40,6 +40,10 @@ Then import the package:
 import petstore_api
 ```
 
+### Tests
+
+Execute `pytest` to run the tests.
+
 ## Getting Started
 
 Please follow the [installation procedure](#installation--usage) and then run the following:
diff --git a/samples/openapi3/client/petstore/python-nextgen/pyproject.toml b/samples/openapi3/client/petstore/python-nextgen/pyproject.toml
new file mode 100644
index 00000000000..d70b472207c
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-nextgen/pyproject.toml
@@ -0,0 +1,28 @@
+[tool.poetry]
+name = "petstore_api"
+version = "1.0.0"
+description = "OpenAPI Petstore"
+authors = ["team@openapitools.org"]
+license = "Apache-2.0"
+readme = "README.md"
+repository = "https://github.com/GIT_REPO_ID/GIT_USER_ID"
+keywords = ["OpenAPI", "OpenAPI-Generator", "OpenAPI Petstore"]
+
+[tool.poetry.dependencies]
+python = "^3.7"
+
+urllib3 = ">= 1.25.3"
+python-dateutil = ">=2.8.2"
+pem = ">= 19.3.0"
+pycryptodome = ">= 3.9.0"
+pydantic = ">= 1.10.5"
+aenum = ">=3.1.11"
+
+[tool.poetry.dev-dependencies]
+pytest = ">=7.2.1"
+tox = ">=4.4.6"
+flake8 = ">=6.0.0"
+
+[build-system]
+requires = ["setuptools"]
+build-backend = "setuptools.build_meta"