diff --git a/backend/.idea/workspace.xml b/backend/.idea/workspace.xml
index 595f049..d97e3bf 100644
--- a/backend/.idea/workspace.xml
+++ b/backend/.idea/workspace.xml
@@ -4,18 +4,8 @@
     <option name="autoReloadType" value="SELECTIVE" />
   </component>
   <component name="ChangeListManager">
-    <list default="true" id="3a869f59-290a-4ab2-b036-a878ce801bc4" name="Changes" comment="Datastructure for Tasks">
-      <change afterPath="$PROJECT_DIR$/../frontend/src/app/tasks/task-editor/TaskEditorData.ts" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/.idea/misc.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/misc.xml" afterDir="false" />
+    <list default="true" id="3a869f59-290a-4ab2-b036-a878ce801bc4" name="Changes" comment="Implementing edit route for tasks">
       <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/main/java/core/api/controller/TaskController.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/core/api/controller/TaskController.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/main/java/core/api/models/timemanager/tasks/TaskEntityInfo.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/core/api/models/timemanager/tasks/TaskEntityInfo.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/main/java/core/entities/timemanager/Task.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/core/entities/timemanager/Task.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/../frontend/package-lock.json" beforeDir="false" afterPath="$PROJECT_DIR$/../frontend/package-lock.json" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/../frontend/src/app/app.module.ts" beforeDir="false" afterPath="$PROJECT_DIR$/../frontend/src/app/app.module.ts" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/../frontend/src/app/taskgroups/taskgroup-dashboard/taskgroup-dashboard.component.html" beforeDir="false" afterPath="$PROJECT_DIR$/../frontend/src/app/taskgroups/taskgroup-dashboard/taskgroup-dashboard.component.html" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/../frontend/src/app/taskgroups/taskgroup-dashboard/taskgroup-dashboard.component.ts" beforeDir="false" afterPath="$PROJECT_DIR$/../frontend/src/app/taskgroups/taskgroup-dashboard/taskgroup-dashboard.component.ts" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/../frontend/src/app/tasks/task-editor/task-editor.component.html" beforeDir="false" afterPath="$PROJECT_DIR$/../frontend/src/app/tasks/task-editor/task-editor.component.html" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/../frontend/src/app/tasks/task-editor/task-editor.component.ts" beforeDir="false" afterPath="$PROJECT_DIR$/../frontend/src/app/tasks/task-editor/task-editor.component.ts" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
@@ -95,7 +85,7 @@
       <workItem from="1696399523081" duration="666000" />
       <workItem from="1696517800445" duration="3887000" />
       <workItem from="1696573678147" duration="111000" />
-      <workItem from="1697923629354" duration="1218000" />
+      <workItem from="1697923629354" duration="2959000" />
     </task>
     <task id="LOCAL-00001" summary="Structure Taskgroups in Hierarchies">
       <option name="closed" value="true" />
@@ -113,7 +103,15 @@
       <option name="project" value="LOCAL" />
       <updated>1696233406235</updated>
     </task>
-    <option name="localTasksCounter" value="3" />
+    <task id="LOCAL-00003" summary="Implementing edit route for tasks">
+      <option name="closed" value="true" />
+      <created>1697929392755</created>
+      <option name="number" value="00003" />
+      <option name="presentableId" value="LOCAL-00003" />
+      <option name="project" value="LOCAL" />
+      <updated>1697929392755</updated>
+    </task>
+    <option name="localTasksCounter" value="4" />
     <servers />
   </component>
   <component name="TypeScriptGeneratedFilesManager">
@@ -123,7 +121,8 @@
     <MESSAGE value="Structure Taskgroups in Hierarchies" />
     <MESSAGE value="Update gitignore for idea folder" />
     <MESSAGE value="Datastructure for Tasks" />
-    <option name="LAST_COMMIT_MESSAGE" value="Datastructure for Tasks" />
+    <MESSAGE value="Implementing edit route for tasks" />
+    <option name="LAST_COMMIT_MESSAGE" value="Implementing edit route for tasks" />
   </component>
   <component name="XDebuggerManager">
     <breakpoint-manager>
diff --git a/frontend/src/api/api/task.service.ts b/frontend/src/api/api/task.service.ts
index 92f7dc7..725f0bd 100644
--- a/frontend/src/api/api/task.service.ts
+++ b/frontend/src/api/api/task.service.ts
@@ -87,6 +87,76 @@ export class TaskService {
         return httpParams;
     }
 
+    /**
+     * edits an existing task
+     * edits an existing task
+     * @param taskID internal id of task
+     * @param taskFieldInfo 
+     * @param observe set whether or not to return the data Observable as the body, response or events. defaults to returning the body.
+     * @param reportProgress flag to report request and response progress.
+     */
+    public tasksTaskIDPost(taskID: number, taskFieldInfo?: TaskFieldInfo, observe?: 'body', reportProgress?: boolean, options?: {httpHeaderAccept?: 'application/json', context?: HttpContext}): Observable<TaskEntityInfo>;
+    public tasksTaskIDPost(taskID: number, taskFieldInfo?: TaskFieldInfo, observe?: 'response', reportProgress?: boolean, options?: {httpHeaderAccept?: 'application/json', context?: HttpContext}): Observable<HttpResponse<TaskEntityInfo>>;
+    public tasksTaskIDPost(taskID: number, taskFieldInfo?: TaskFieldInfo, observe?: 'events', reportProgress?: boolean, options?: {httpHeaderAccept?: 'application/json', context?: HttpContext}): Observable<HttpEvent<TaskEntityInfo>>;
+    public tasksTaskIDPost(taskID: number, taskFieldInfo?: TaskFieldInfo, observe: any = 'body', reportProgress: boolean = false, options?: {httpHeaderAccept?: 'application/json', context?: HttpContext}): Observable<any> {
+        if (taskID === null || taskID === undefined) {
+            throw new Error('Required parameter taskID was null or undefined when calling tasksTaskIDPost.');
+        }
+
+        let localVarHeaders = this.defaultHeaders;
+
+        let localVarCredential: string | undefined;
+        // authentication (API_TOKEN) required
+        localVarCredential = this.configuration.lookupCredential('API_TOKEN');
+        if (localVarCredential) {
+            localVarHeaders = localVarHeaders.set('Authorization', 'Bearer ' + localVarCredential);
+        }
+
+        let localVarHttpHeaderAcceptSelected: string | undefined = options && options.httpHeaderAccept;
+        if (localVarHttpHeaderAcceptSelected === undefined) {
+            // to determine the Accept header
+            const httpHeaderAccepts: string[] = [
+                'application/json'
+            ];
+            localVarHttpHeaderAcceptSelected = this.configuration.selectHeaderAccept(httpHeaderAccepts);
+        }
+        if (localVarHttpHeaderAcceptSelected !== undefined) {
+            localVarHeaders = localVarHeaders.set('Accept', localVarHttpHeaderAcceptSelected);
+        }
+
+        let localVarHttpContext: HttpContext | undefined = options && options.context;
+        if (localVarHttpContext === undefined) {
+            localVarHttpContext = new HttpContext();
+        }
+
+
+        // to determine the Content-Type header
+        const consumes: string[] = [
+            'application/json'
+        ];
+        const httpContentTypeSelected: string | undefined = this.configuration.selectHeaderContentType(consumes);
+        if (httpContentTypeSelected !== undefined) {
+            localVarHeaders = localVarHeaders.set('Content-Type', httpContentTypeSelected);
+        }
+
+        let responseType_: 'text' | 'json' = 'json';
+        if(localVarHttpHeaderAcceptSelected && localVarHttpHeaderAcceptSelected.startsWith('text')) {
+            responseType_ = 'text';
+        }
+
+        return this.httpClient.post<TaskEntityInfo>(`${this.configuration.basePath}/tasks/${encodeURIComponent(String(taskID))}`,
+            taskFieldInfo,
+            {
+                context: localVarHttpContext,
+                responseType: <any>responseType_,
+                withCredentials: this.configuration.withCredentials,
+                headers: localVarHeaders,
+                observe: observe,
+                reportProgress: reportProgress
+            }
+        );
+    }
+
     /**
      * creates a new task
      * creates tasks
diff --git a/frontend/src/app/tasks/task-editor/task-editor.component.html b/frontend/src/app/tasks/task-editor/task-editor.component.html
index df5b8b8..317a467 100644
--- a/frontend/src/app/tasks/task-editor/task-editor.component.html
+++ b/frontend/src/app/tasks/task-editor/task-editor.component.html
@@ -28,5 +28,5 @@
 
 <div mat-dialog-actions align="end">
   <button mat-raised-button (click)="cancel()">Cancel</button>
-  <button mat-raised-button color="primary" (click)="submit()">Add Task</button>
+  <button mat-raised-button color="primary" (click)="submit()">{{editorData.task == undefined? 'Add Task': 'Edit Task'}}</button>
 </div>
diff --git a/frontend/src/app/tasks/task-editor/task-editor.component.ts b/frontend/src/app/tasks/task-editor/task-editor.component.ts
index 6dd4acc..7c18112 100644
--- a/frontend/src/app/tasks/task-editor/task-editor.component.ts
+++ b/frontend/src/app/tasks/task-editor/task-editor.component.ts
@@ -39,6 +39,7 @@ export class TaskEditorComponent implements OnInit {
   }
 
   submit() {
+
     if(this.editorData.task != undefined) {
       this.editTask()
     } else {
@@ -71,6 +72,30 @@ export class TaskEditorComponent implements OnInit {
   }
 
   editTask() {
-    //todo: api call
+    this.taskService.tasksTaskIDPost(this.editorData.task!.taskID, {
+      taskName: this.nameCtrl.value,
+      eta: this.etaCtrl.value,
+      startDate: this.startDate.value,
+      deadline: this.endDate.value
+    }).subscribe({
+      next: resp => {
+        this.editorData.task!.taskName = this.nameCtrl.value;
+        this.editorData.task!.eta = this.etaCtrl.value;
+        this.editorData.task!.startDate = this.startDate.value;
+        this.editorData.task!.deadline = this.endDate.value;
+        this.dialog.close(true);
+      },
+      error: err => {
+        if(err.status == 403) {
+          this.snackbar.open("No permission", "", {duration: 2000});
+        } else if(err.status == 404) {
+          this.snackbar.open("Taskgroup not found", "", {duration: 2000});
+        } else if(err.status == 409) {
+          this.snackbar.open("Task already exists", "", {duration: 2000});
+        } else  {
+          this.snackbar.open("Unexpected error", "", {duration: 3000});
+        }
+      }
+    })
   }
 }
diff --git a/openapi.yaml b/openapi.yaml
index 3699910..2547368 100644
--- a/openapi.yaml
+++ b/openapi.yaml
@@ -969,6 +969,80 @@ paths:
                     example: "failed"
                     enum:
                       - "failed"
+  /tasks/{taskID}:
+    post: 
+      security:
+        - API_TOKEN: []
+      tags:
+        - task
+      summary: edits an existing task
+      description: edits an existing task
+      parameters:
+        - name: taskID
+          in: path
+          description: internal id of task
+          required: true
+          schema:
+            type: number
+            example: 1
+      requestBody:
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/TaskFieldInfo'
+      responses:
+        200:
+          description: Anfrage erfolgreich
+          content:
+            'application/json':
+              schema:
+                type: object
+                $ref: '#/components/schemas/TaskEntityInfo'
+        403:
+          description: No permission
+          content:
+            'application/json':
+              schema:
+                type: object
+                required:
+                  - status
+                properties:
+                  status:
+                    type: string
+                    description: Status
+                    example: "failed"
+                    enum:
+                      - "failed"
+        404:
+          description: Taskgroup does not exist
+          content:
+            'application/json':
+              schema:
+                type: object
+                required:
+                  - status
+                properties:
+                  status:
+                    type: string
+                    description: Status
+                    example: "failed"
+                    enum:
+                      - "failed"
+        409:
+          description: Task already exist
+          content:
+            'application/json':
+              schema:
+                type: object
+                required:
+                  - status
+                properties:
+                  status:
+                    type: string
+                    description: Status
+                    example: "failed"
+                    enum:
+                      - "failed"
 
 components:
   securitySchemes: