diff --git a/modules/openapi-generator/src/main/resources/typescript-fetch/runtime.mustache b/modules/openapi-generator/src/main/resources/typescript-fetch/runtime.mustache
index 68a3811bb397..ee1ee65cc393 100644
--- a/modules/openapi-generator/src/main/resources/typescript-fetch/runtime.mustache
+++ b/modules/openapi-generator/src/main/resources/typescript-fetch/runtime.mustache
@@ -182,7 +182,7 @@ export class Configuration {
 }
 
 export type Json = any;
-export type HTTPMethod = 'GET' | 'POST' | 'PUT' | 'PATCH' | 'DELETE' | 'OPTIONS';
+export type HTTPMethod = 'GET' | 'POST' | 'PUT' | 'PATCH' | 'DELETE' | 'OPTIONS' | 'HEAD';
 export type HTTPHeaders = { [key: string]: string };
 export type HTTPQuery = { [key: string]: string | number | null | boolean | Array<string | number | null | boolean> | HTTPQuery };
 export type HTTPBody = Json | FormData | URLSearchParams;
diff --git a/samples/client/petstore/typescript-fetch/builds/default/runtime.ts b/samples/client/petstore/typescript-fetch/builds/default/runtime.ts
index 8862b423aaad..649e17504246 100644
--- a/samples/client/petstore/typescript-fetch/builds/default/runtime.ts
+++ b/samples/client/petstore/typescript-fetch/builds/default/runtime.ts
@@ -193,7 +193,7 @@ export class Configuration {
 }
 
 export type Json = any;
-export type HTTPMethod = 'GET' | 'POST' | 'PUT' | 'PATCH' | 'DELETE' | 'OPTIONS';
+export type HTTPMethod = 'GET' | 'POST' | 'PUT' | 'PATCH' | 'DELETE' | 'OPTIONS' | 'HEAD';
 export type HTTPHeaders = { [key: string]: string };
 export type HTTPQuery = { [key: string]: string | number | null | boolean | Array<string | number | null | boolean> | HTTPQuery };
 export type HTTPBody = Json | FormData | URLSearchParams;
diff --git a/samples/client/petstore/typescript-fetch/builds/es6-target/src/runtime.ts b/samples/client/petstore/typescript-fetch/builds/es6-target/src/runtime.ts
index 8862b423aaad..649e17504246 100644
--- a/samples/client/petstore/typescript-fetch/builds/es6-target/src/runtime.ts
+++ b/samples/client/petstore/typescript-fetch/builds/es6-target/src/runtime.ts
@@ -193,7 +193,7 @@ export class Configuration {
 }
 
 export type Json = any;
-export type HTTPMethod = 'GET' | 'POST' | 'PUT' | 'PATCH' | 'DELETE' | 'OPTIONS';
+export type HTTPMethod = 'GET' | 'POST' | 'PUT' | 'PATCH' | 'DELETE' | 'OPTIONS' | 'HEAD';
 export type HTTPHeaders = { [key: string]: string };
 export type HTTPQuery = { [key: string]: string | number | null | boolean | Array<string | number | null | boolean> | HTTPQuery };
 export type HTTPBody = Json | FormData | URLSearchParams;
diff --git a/samples/client/petstore/typescript-fetch/builds/multiple-parameters/runtime.ts b/samples/client/petstore/typescript-fetch/builds/multiple-parameters/runtime.ts
index 8862b423aaad..649e17504246 100644
--- a/samples/client/petstore/typescript-fetch/builds/multiple-parameters/runtime.ts
+++ b/samples/client/petstore/typescript-fetch/builds/multiple-parameters/runtime.ts
@@ -193,7 +193,7 @@ export class Configuration {
 }
 
 export type Json = any;
-export type HTTPMethod = 'GET' | 'POST' | 'PUT' | 'PATCH' | 'DELETE' | 'OPTIONS';
+export type HTTPMethod = 'GET' | 'POST' | 'PUT' | 'PATCH' | 'DELETE' | 'OPTIONS' | 'HEAD';
 export type HTTPHeaders = { [key: string]: string };
 export type HTTPQuery = { [key: string]: string | number | null | boolean | Array<string | number | null | boolean> | HTTPQuery };
 export type HTTPBody = Json | FormData | URLSearchParams;
diff --git a/samples/client/petstore/typescript-fetch/builds/prefix-parameter-interfaces/src/runtime.ts b/samples/client/petstore/typescript-fetch/builds/prefix-parameter-interfaces/src/runtime.ts
index 8862b423aaad..649e17504246 100644
--- a/samples/client/petstore/typescript-fetch/builds/prefix-parameter-interfaces/src/runtime.ts
+++ b/samples/client/petstore/typescript-fetch/builds/prefix-parameter-interfaces/src/runtime.ts
@@ -193,7 +193,7 @@ export class Configuration {
 }
 
 export type Json = any;
-export type HTTPMethod = 'GET' | 'POST' | 'PUT' | 'PATCH' | 'DELETE' | 'OPTIONS';
+export type HTTPMethod = 'GET' | 'POST' | 'PUT' | 'PATCH' | 'DELETE' | 'OPTIONS' | 'HEAD';
 export type HTTPHeaders = { [key: string]: string };
 export type HTTPQuery = { [key: string]: string | number | null | boolean | Array<string | number | null | boolean> | HTTPQuery };
 export type HTTPBody = Json | FormData | URLSearchParams;
diff --git a/samples/client/petstore/typescript-fetch/builds/typescript-three-plus/src/runtime.ts b/samples/client/petstore/typescript-fetch/builds/typescript-three-plus/src/runtime.ts
index c84478821a07..b6e6a7744d78 100644
--- a/samples/client/petstore/typescript-fetch/builds/typescript-three-plus/src/runtime.ts
+++ b/samples/client/petstore/typescript-fetch/builds/typescript-three-plus/src/runtime.ts
@@ -193,7 +193,7 @@ export class Configuration {
 }
 
 export type Json = any;
-export type HTTPMethod = 'GET' | 'POST' | 'PUT' | 'PATCH' | 'DELETE' | 'OPTIONS';
+export type HTTPMethod = 'GET' | 'POST' | 'PUT' | 'PATCH' | 'DELETE' | 'OPTIONS' | 'HEAD';
 export type HTTPHeaders = { [key: string]: string };
 export type HTTPQuery = { [key: string]: string | number | null | boolean | Array<string | number | null | boolean> | HTTPQuery };
 export type HTTPBody = Json | FormData | URLSearchParams;
diff --git a/samples/client/petstore/typescript-fetch/builds/with-interfaces/runtime.ts b/samples/client/petstore/typescript-fetch/builds/with-interfaces/runtime.ts
index 8862b423aaad..649e17504246 100644
--- a/samples/client/petstore/typescript-fetch/builds/with-interfaces/runtime.ts
+++ b/samples/client/petstore/typescript-fetch/builds/with-interfaces/runtime.ts
@@ -193,7 +193,7 @@ export class Configuration {
 }
 
 export type Json = any;
-export type HTTPMethod = 'GET' | 'POST' | 'PUT' | 'PATCH' | 'DELETE' | 'OPTIONS';
+export type HTTPMethod = 'GET' | 'POST' | 'PUT' | 'PATCH' | 'DELETE' | 'OPTIONS' | 'HEAD';
 export type HTTPHeaders = { [key: string]: string };
 export type HTTPQuery = { [key: string]: string | number | null | boolean | Array<string | number | null | boolean> | HTTPQuery };
 export type HTTPBody = Json | FormData | URLSearchParams;
diff --git a/samples/client/petstore/typescript-fetch/builds/with-npm-version/src/runtime.ts b/samples/client/petstore/typescript-fetch/builds/with-npm-version/src/runtime.ts
index 8862b423aaad..649e17504246 100644
--- a/samples/client/petstore/typescript-fetch/builds/with-npm-version/src/runtime.ts
+++ b/samples/client/petstore/typescript-fetch/builds/with-npm-version/src/runtime.ts
@@ -193,7 +193,7 @@ export class Configuration {
 }
 
 export type Json = any;
-export type HTTPMethod = 'GET' | 'POST' | 'PUT' | 'PATCH' | 'DELETE' | 'OPTIONS';
+export type HTTPMethod = 'GET' | 'POST' | 'PUT' | 'PATCH' | 'DELETE' | 'OPTIONS' | 'HEAD';
 export type HTTPHeaders = { [key: string]: string };
 export type HTTPQuery = { [key: string]: string | number | null | boolean | Array<string | number | null | boolean> | HTTPQuery };
 export type HTTPBody = Json | FormData | URLSearchParams;