diff --git a/modules/openapi-generator/src/main/resources/python/rest.mustache b/modules/openapi-generator/src/main/resources/python/rest.mustache
index f72bf6dfd8f..2d8a1c9706e 100644
--- a/modules/openapi-generator/src/main/resources/python/rest.mustache
+++ b/modules/openapi-generator/src/main/resources/python/rest.mustache
@@ -198,6 +198,15 @@ class RESTClientObject:
                         headers=headers,
                         preload_content=False
                     )
+                elif headers['Content-Type'] == 'text/plain' and isinstance(body, bool):
+                    request_body = "true" if body else "false"
+                    r = self.pool_manager.request(
+                        method,
+                        url,
+                        body=request_body,
+                        preload_content=False,
+                        timeout=timeout,
+                        headers=headers)
                 else:
                     # Cannot generate the request from given parameters
                     msg = """Cannot prepare a request message for provided
diff --git a/samples/client/echo_api/python-disallowAdditionalPropertiesIfNotPresent-true/openapi_client/rest.py b/samples/client/echo_api/python-disallowAdditionalPropertiesIfNotPresent-true/openapi_client/rest.py
index da77b96513f..0c9afe7006f 100644
--- a/samples/client/echo_api/python-disallowAdditionalPropertiesIfNotPresent-true/openapi_client/rest.py
+++ b/samples/client/echo_api/python-disallowAdditionalPropertiesIfNotPresent-true/openapi_client/rest.py
@@ -209,6 +209,15 @@ class RESTClientObject:
                         headers=headers,
                         preload_content=False
                     )
+                elif headers['Content-Type'] == 'text/plain' and isinstance(body, bool):
+                    request_body = "true" if body else "false"
+                    r = self.pool_manager.request(
+                        method,
+                        url,
+                        body=request_body,
+                        preload_content=False,
+                        timeout=timeout,
+                        headers=headers)
                 else:
                     # Cannot generate the request from given parameters
                     msg = """Cannot prepare a request message for provided
diff --git a/samples/client/echo_api/python/openapi_client/rest.py b/samples/client/echo_api/python/openapi_client/rest.py
index da77b96513f..0c9afe7006f 100644
--- a/samples/client/echo_api/python/openapi_client/rest.py
+++ b/samples/client/echo_api/python/openapi_client/rest.py
@@ -209,6 +209,15 @@ class RESTClientObject:
                         headers=headers,
                         preload_content=False
                     )
+                elif headers['Content-Type'] == 'text/plain' and isinstance(body, bool):
+                    request_body = "true" if body else "false"
+                    r = self.pool_manager.request(
+                        method,
+                        url,
+                        body=request_body,
+                        preload_content=False,
+                        timeout=timeout,
+                        headers=headers)
                 else:
                     # Cannot generate the request from given parameters
                     msg = """Cannot prepare a request message for provided
diff --git a/samples/openapi3/client/petstore/python/petstore_api/rest.py b/samples/openapi3/client/petstore/python/petstore_api/rest.py
index da531ca1461..785cc38e825 100755
--- a/samples/openapi3/client/petstore/python/petstore_api/rest.py
+++ b/samples/openapi3/client/petstore/python/petstore_api/rest.py
@@ -208,6 +208,15 @@ class RESTClientObject:
                         headers=headers,
                         preload_content=False
                     )
+                elif headers['Content-Type'] == 'text/plain' and isinstance(body, bool):
+                    request_body = "true" if body else "false"
+                    r = self.pool_manager.request(
+                        method,
+                        url,
+                        body=request_body,
+                        preload_content=False,
+                        timeout=timeout,
+                        headers=headers)
                 else:
                     # Cannot generate the request from given parameters
                     msg = """Cannot prepare a request message for provided