diff --git a/src/frontend/apps/impress/src/features/service-worker/ApiPlugin.ts b/src/frontend/apps/impress/src/features/service-worker/ApiPlugin.ts
index 0502defe..55dc888f 100644
--- a/src/frontend/apps/impress/src/features/service-worker/ApiPlugin.ts
+++ b/src/frontend/apps/impress/src/features/service-worker/ApiPlugin.ts
@@ -44,16 +44,36 @@ export class ApiPlugin implements WorkboxPlugin {
     request,
     response,
   }) => {
-    if (this.options.type === 'list' || this.options.type === 'item') {
-      if (response.status !== 200) {
-        return response;
-      }
+    if (response.status !== 200) {
+      return response;
+    }
 
+    if (this.options.type === 'list' || this.options.type === 'item') {
       const tableName = this.options.tableName;
       const body = (await response.clone().json()) as DocsResponse | Doc;
       await DocsDB.cacheResponse(request.url, body, tableName);
     }
 
+    if (this.options.type === 'update') {
+      const db = await DocsDB.open();
+      const storedResponse = await db.get('doc-item', request.url);
+
+      if (!storedResponse || !this.initialRequest) {
+        return response;
+      }
+
+      const bodyMutate = (await this.initialRequest
+        .clone()
+        .json()) as Partial<Doc>;
+
+      const newResponse = {
+        ...storedResponse,
+        ...bodyMutate,
+      };
+
+      await DocsDB.cacheResponse(request.url, newResponse, 'doc-item');
+    }
+
     return response;
   };
 
diff --git a/src/frontend/apps/impress/src/features/service-worker/__tests__/ApiPlugin.test.tsx b/src/frontend/apps/impress/src/features/service-worker/__tests__/ApiPlugin.test.tsx
index 491d77b6..4285e00e 100644
--- a/src/frontend/apps/impress/src/features/service-worker/__tests__/ApiPlugin.test.tsx
+++ b/src/frontend/apps/impress/src/features/service-worker/__tests__/ApiPlugin.test.tsx
@@ -30,17 +30,34 @@ jest.mock('idb', () => ({
 describe('ApiPlugin', () => {
   afterEach(() => jest.clearAllMocks());
 
-  ['doc-item', 'doc-list'].forEach((type) => {
+  [
+    { type: 'item', table: 'doc-item' },
+    { type: 'list', table: 'doc-list' },
+    { type: 'update', table: 'doc-item' },
+  ].forEach(({ type, table }) => {
     it(`calls fetchDidSucceed with type ${type} and status 200`, async () => {
+      const mockedSync = jest.fn().mockResolvedValue({});
       const apiPlugin = new ApiPlugin({
-        tableName: type as any,
-        type: 'list',
-        syncManager: jest.fn() as any,
+        tableName: table as any,
+        type: type as any,
+        syncManager: {
+          sync: () => mockedSync(),
+        } as any,
       });
 
       const body = { lastName: 'Doe' };
       const bodyBuffer = RequestSerializer.objectToArrayBuffer(body);
 
+      const requestInit = {
+        request: {
+          url: 'test-url',
+          clone: () => mockedClone(),
+          json: () => body,
+        } as unknown as Request,
+      } as any;
+      const mockedClone = jest.fn().mockReturnValue(requestInit.request);
+      await apiPlugin.requestWillFetch?.(requestInit);
+
       const response = await apiPlugin.fetchDidSucceed?.({
         request: {
           url: 'test-url',
@@ -55,15 +72,15 @@ describe('ApiPlugin', () => {
         }),
       } as any);
 
-      expect(mockedPut).toHaveBeenCalledWith(type, body, 'test-url');
+      expect(mockedPut).toHaveBeenCalledWith(table, body, 'test-url');
       expect(mockedClose).toHaveBeenCalled();
       expect(response?.status).toBe(200);
     });
 
     it(`calls fetchDidSucceed with type ${type} and status other that 200`, async () => {
       const apiPlugin = new ApiPlugin({
-        tableName: type as any,
-        type: 'list',
+        tableName: table as any,
+        type: type as any,
         syncManager: jest.fn() as any,
       });