diff --git a/src/stores/useTaskStore.ts b/src/stores/useTaskStore.ts
index 98fcdae..b78101b 100644
--- a/src/stores/useTaskStore.ts
+++ b/src/stores/useTaskStore.ts
@@ -173,6 +173,7 @@ const defaultTasks: Task[] = [
     status: 'done',
     priority: 'high',
     projectId: '2',
+    sprintId: 'sprint-1',
     createdAt: new Date().toISOString(),
     updatedAt: new Date().toISOString(),
     comments: [
@@ -190,6 +191,7 @@ const defaultTasks: Task[] = [
     status: 'in-progress',
     priority: 'medium',
     projectId: '2',
+    sprintId: 'sprint-1',
     createdAt: new Date().toISOString(),
     updatedAt: new Date().toISOString(),
     comments: [
@@ -210,6 +212,7 @@ const defaultTasks: Task[] = [
     status: 'done',
     priority: 'medium',
     projectId: '2',
+    sprintId: 'sprint-1',
     createdAt: new Date().toISOString(),
     updatedAt: new Date().toISOString(),
     comments: [
@@ -229,6 +232,7 @@ const defaultTasks: Task[] = [
     status: 'done',
     priority: 'urgent',
     projectId: '2',
+    sprintId: 'sprint-1',
     createdAt: new Date().toISOString(),
     updatedAt: new Date().toISOString(),
     comments: [
@@ -249,6 +253,7 @@ const defaultTasks: Task[] = [
     status: 'done',
     priority: 'high',
     projectId: '2',
+    sprintId: 'sprint-1',
     createdAt: new Date().toISOString(),
     updatedAt: new Date().toISOString(),
     comments: [
@@ -267,6 +272,7 @@ const defaultTasks: Task[] = [
     status: 'done',
     priority: 'high',
     projectId: '2',
+    sprintId: 'sprint-1',
     createdAt: new Date().toISOString(),
     updatedAt: new Date().toISOString(),
     comments: [
@@ -284,6 +290,7 @@ const defaultTasks: Task[] = [
     status: 'done',
     priority: 'high',
     projectId: '2',
+    sprintId: 'sprint-1',
     createdAt: new Date().toISOString(),
     updatedAt: new Date().toISOString(),
     comments: [
@@ -311,6 +318,7 @@ const defaultTasks: Task[] = [
     status: 'done',
     priority: 'low',
     projectId: '3',
+    sprintId: 'sprint-1',
     createdAt: new Date().toISOString(),
     updatedAt: new Date().toISOString(),
     comments: [
@@ -332,6 +340,7 @@ const defaultTasks: Task[] = [
     status: 'done',
     priority: 'high',
     projectId: '2',
+    sprintId: 'sprint-1',
     createdAt: new Date().toISOString(),
     updatedAt: new Date().toISOString(),
     comments: [
@@ -353,6 +362,7 @@ const defaultTasks: Task[] = [
     status: 'backlog',
     priority: 'medium',
     projectId: '2',
+    sprintId: 'sprint-1',
     createdAt: new Date().toISOString(),
     updatedAt: new Date().toISOString(),
     comments: [
@@ -383,7 +393,7 @@ export const useTaskStore = create<TaskStore>()(
     (set, get) => ({
       projects: defaultProjects,
       tasks: defaultTasks,
-      sprints: [],
+      sprints: defaultSprints,
       selectedProjectId: '1',
       selectedTaskId: null,
       selectedSprintId: null,