diff --git a/api/main.go b/api/main.go
index efc3140..4cbe2bf 100644
--- a/api/main.go
+++ b/api/main.go
@@ -106,6 +106,7 @@ func New() *WebAPI {
 	api.router.POST("/project/webhook_secret/:id", LogRequestMiddleware(api.SetWebhookSecret))
 	api.router.POST("/project/reset_failed_tasks/:id", LogRequestMiddleware(api.ResetFailedTasks))
 	api.router.POST("/project/hard_reset/:id", LogRequestMiddleware(api.HardReset))
+	api.router.POST("/project/reclaim_assigned_tasks/:id", LogRequestMiddleware(api.ReclaimAssignedTasks))
 
 	api.router.POST("/task/submit", LogRequestMiddleware(api.SubmitTask))
 	api.router.GET("/task/get/:project", LogRequestMiddleware(api.GetTaskFromProject))
diff --git a/api/models.go b/api/models.go
index 8061e72..ea372c6 100644
--- a/api/models.go
+++ b/api/models.go
@@ -318,3 +318,7 @@ type ResetFailedTaskResponse struct {
 type HardResetResponse struct {
 	AffectedTasks int64 `json:"affected_tasks"`
 }
+
+type ReclaimAssignedTasksResponse struct {
+	AffectedTasks int64 `json:"affected_tasks"`
+}
diff --git a/api/project.go b/api/project.go
index fad5d73..6f0f6dc 100644
--- a/api/project.go
+++ b/api/project.go
@@ -756,3 +756,35 @@ func (api *WebAPI) HardReset(r *Request) {
 		},
 	})
 }
+
+func (api *WebAPI) ReclaimAssignedTasks(r *Request) {
+
+	pid, err := strconv.ParseInt(r.Ctx.UserValue("id").(string), 10, 64)
+	if err != nil || pid <= 0 {
+		r.Json(JsonResponse{
+			Ok:      false,
+			Message: "Invalid project id",
+		}, 400)
+		return
+	}
+
+	sess := api.Session.StartFasthttp(r.Ctx)
+	manager := sess.Get("manager")
+
+	if !isActionOnProjectAuthorized(pid, manager, storage.RoleMaintenance, api.Database) {
+		r.Json(JsonResponse{
+			Ok:      false,
+			Message: "Unauthorized",
+		}, 403)
+		return
+	}
+
+	res := api.Database.ReclaimAssignedTasks(pid)
+
+	r.OkJson(JsonResponse{
+		Ok: true,
+		Content: ReclaimAssignedTasksResponse{
+			AffectedTasks: res,
+		},
+	})
+}
diff --git a/storage/maintenance.go b/storage/maintenance.go
index 88d87ea..30f06a5 100644
--- a/storage/maintenance.go
+++ b/storage/maintenance.go
@@ -50,3 +50,21 @@ func (database Database) HardReset(pid int64) int64 {
 
 	return rowsAffected
 }
+
+func (database Database) ReclaimAssignedTasks(pid int64) int64 {
+
+	db := database.getDB()
+
+	res, err := db.Exec(`UPDATE task SET assignee=NULL, assign_time=NULL 
+		WHERE project=$1 AND status=1`, pid)
+	handleErr(err)
+
+	rowsAffected, _ := res.RowsAffected()
+
+	logrus.WithFields(logrus.Fields{
+		"rowsAffected": rowsAffected,
+		"project":      pid,
+	}).Info("Reclaim assigned tasks")
+
+	return rowsAffected
+}
diff --git a/web/angular/src/app/api.service.ts b/web/angular/src/app/api.service.ts
index 42b0f73..0c40d08 100755
--- a/web/angular/src/app/api.service.ts
+++ b/web/angular/src/app/api.service.ts
@@ -122,4 +122,8 @@ export class ApiService {
         return this.http.post(this.url + `/project/hard_reset/${pid}`, null, this.options);
     }
 
+    reclaimAssignedTasks(pid: number) {
+        return this.http.post(this.url + `/project/reclaim_assigned_tasks/${pid}`, null, this.options);
+    }
+
 }
diff --git a/web/angular/src/app/project-dashboard/project-dashboard.component.html b/web/angular/src/app/project-dashboard/project-dashboard.component.html
index da03a7a..b7dc301 100644
--- a/web/angular/src/app/project-dashboard/project-dashboard.component.html
+++ b/web/angular/src/app/project-dashboard/project-dashboard.component.html
@@ -85,6 +85,10 @@
                     <mat-icon>warning</mat-icon>
                     {{"dashboard.hard_reset"|translate}}
                 </button>
+                <button mat-raised-button color="accent" (click)="reclaimAssignedTasks()">
+                    <mat-icon>replay</mat-icon>
+                    {{"dashboard.reclaim"|translate}}
+                </button>
             </mat-expansion-panel>
 
         </mat-card-content>
diff --git a/web/angular/src/app/project-dashboard/project-dashboard.component.ts b/web/angular/src/app/project-dashboard/project-dashboard.component.ts
index a47871d..897115a 100644
--- a/web/angular/src/app/project-dashboard/project-dashboard.component.ts
+++ b/web/angular/src/app/project-dashboard/project-dashboard.component.ts
@@ -442,4 +442,20 @@ export class ProjectDashboardComponent implements OnInit {
             }
         });
     }
+
+    reclaimAssignedTasks() {
+        this.dialog.open(AreYouSureComponent, {
+            width: '250px',
+        }).afterClosed().subscribe(result => {
+            if (result) {
+                this.apiService.reclaimAssignedTasks(this.project.id).subscribe(data => {
+                    this.translate.get('project.reclaim_response').subscribe(t =>
+                        this.messenger.show(t + data['content']['affected_tasks']));
+                }, error => {
+                    this.translate.get('messenger.unauthorized').subscribe(t =>
+                        this.messenger.show(t));
+                });
+            }
+        });
+    }
 }
diff --git a/web/angular/src/assets/i18n/en.json b/web/angular/src/assets/i18n/en.json
index b57e3ce..101e6cd 100644
--- a/web/angular/src/assets/i18n/en.json
+++ b/web/angular/src/assets/i18n/en.json
@@ -72,6 +72,7 @@
         "secret": "Secret",
         "reset_response": "Reset failed tasks: ",
         "hard_reset_response": "Deleted tasks: ",
+        "reclaim_response": "Reclaimed tasks: ",
         "assign_rate": "Task assign rate limit",
         "submit_rate": "Task submit rate limit",
         "rate": "per second",
@@ -87,7 +88,8 @@
         "reset_failed": "Reset failed tasks",
         "pause": "Pause",
         "resume": "Resume",
-        "hard_reset": "Hard_reset"
+        "hard_reset": "Hard reset",
+        "reclaim": "Reclaim assigned tasks"
     },
     "login": {
         "title": "Login",
diff --git a/web/angular/src/assets/i18n/fr.json b/web/angular/src/assets/i18n/fr.json
index 151d041..6e4e264 100644
--- a/web/angular/src/assets/i18n/fr.json
+++ b/web/angular/src/assets/i18n/fr.json
@@ -72,6 +72,7 @@
         "version": "Version git (hash du commit)",
         "reset_response": "Réinitialisé les tâches en échec: ",
         "hard_reset_response": "Supprimé toutes les tâches: ",
+        "reclaim_response": "Désaffecté les tâches: ",
         "assign_rate": "Taux d'assignation de tâches",
         "submit_rate": "Taux de soumission de tâches",
         "rate": "par seconde",
@@ -83,7 +84,8 @@
         "metadata": "Métadonnés du projet",
         "empty": "Aucune tâche",
         "refresh": "Rafraîchir",
-        "actions": "Actions"
+        "actions": "Actions",
+        "reclaim": "Déaffecter les tâches"
     },
     "login": {
         "title": "Ouvrir un session",