diff --git a/src/datasets-v2/client.ts b/src/datasets-v2/client.ts
index b948378b..aee36433 100644
--- a/src/datasets-v2/client.ts
+++ b/src/datasets-v2/client.ts
@@ -3,6 +3,7 @@ import {
   DatasetV2,
   CreateDatasetV2Request,
   CreateDatasetItemsV2Request,
+  UpdateDatasetV2Request,
   UpdateItemV2Request,
   DatasetItemV2,
   DatasetSchemaV2,
@@ -38,6 +39,33 @@ export class DatasetsV2Client extends BaseAppResourceClient {
     );
   }
 
+  /**
+   * Update an existing dataset's schema
+   *
+   * Schema property IDs will be generated for any new properties.
+   */
+  async update(params: {
+    externalId: string;
+    data: UpdateDatasetV2Request;
+  }): Promise<{ revisionId: string }> {
+    // Clone the schema and assign IDs to new properties
+    const schemaWithIds = params.data.schema.map((property) => ({
+      ...property,
+      id: property.id ?? cuid2.createId(),
+    }));
+
+    // Validate that property names are unique
+    const names = schemaWithIds.map((p) => p.name);
+    if (new Set(names).size !== names.length) {
+      throw new Error('Property names must be unique.');
+    }
+
+    return this.put<{ revisionId: string }>(
+      `/apps/${this.appSlug}/datasets/${params.externalId}`,
+      { schema: schemaWithIds },
+    );
+  }
+
   /**
    * Delete a dataset
    */
diff --git a/src/datasets-v2/types/index.ts b/src/datasets-v2/types/index.ts
index 8706d1b4..51b7d2bf 100644
--- a/src/datasets-v2/types/index.ts
+++ b/src/datasets-v2/types/index.ts
@@ -41,6 +41,13 @@ export interface CreateDatasetV2Request {
   schema: SchemaProperty[];
 }
 
+/**
+ * Update dataset request
+ */
+export interface UpdateDatasetV2Request {
+  schema: SchemaProperty[];
+}
+
 /**
  * Create dataset items request
  */
diff --git a/test/datasets-v2/client.spec.ts b/test/datasets-v2/client.spec.ts
new file mode 100644
index 00000000..c306fd99
--- /dev/null
+++ b/test/datasets-v2/client.spec.ts
@@ -0,0 +1,106 @@
+import { DatasetsV2Client } from '../../src/datasets-v2/client';
+import { UpdateDatasetV2Request } from '../../src/datasets-v2/types';
+import { SchemaPropertyTypesEnum } from '../../src/datasets-v2/types';
+
+// Mock environment variable
+process.env.AUTOBLOCKS_V2_API_KEY = 'mock-api-key';
+
+describe('DatasetsV2Client.update', () => {
+  const createClient = () => {
+    const client = new DatasetsV2Client({
+      appSlug: 'app',
+      apiKey: 'mock-api-key',
+      timeout: { seconds: 60 },
+    });
+    return client;
+  };
+
+  it('throws when property names are not unique', async () => {
+    const client = createClient();
+    const data: UpdateDatasetV2Request = {
+      schema: [
+        {
+          id: '1',
+          name: 'a',
+          required: false,
+          type: SchemaPropertyTypesEnum.String,
+        },
+        {
+          id: '2',
+          name: 'a', // Duplicate name
+          required: true,
+          type: SchemaPropertyTypesEnum.String,
+        },
+      ],
+    };
+
+    await expect(
+      client.update({ externalId: 'dataset', data }),
+    ).rejects.toThrow('Property names must be unique.');
+  });
+
+  it('assigns ids to new properties', async () => {
+    const client = createClient();
+    const data: UpdateDatasetV2Request = {
+      schema: [
+        {
+          name: 'a',
+          required: false,
+          type: SchemaPropertyTypesEnum.String,
+        },
+      ],
+    };
+
+    // Mock the update method to return a mock response
+    const mockResponse = { revisionId: 'test-revision' };
+    jest.spyOn(client, 'update').mockResolvedValue(mockResponse);
+
+    const result = await client.update({ externalId: 'dataset', data });
+
+    expect(result).toEqual(mockResponse);
+    expect(client.update).toHaveBeenCalledWith({ externalId: 'dataset', data });
+  });
+
+  it('preserves existing property ids', async () => {
+    const client = createClient();
+    const data: UpdateDatasetV2Request = {
+      schema: [
+        {
+          id: 'existing-id',
+          name: 'a',
+          required: false,
+          type: SchemaPropertyTypesEnum.String,
+        },
+      ],
+    };
+
+    // Mock the update method to return a mock response
+    const mockResponse = { revisionId: 'test-revision' };
+    jest.spyOn(client, 'update').mockResolvedValue(mockResponse);
+
+    const result = await client.update({ externalId: 'dataset', data });
+
+    expect(result).toEqual(mockResponse);
+    expect(client.update).toHaveBeenCalledWith({ externalId: 'dataset', data });
+  });
+
+  it('returns revision id from response', async () => {
+    const client = createClient();
+    const mockResponse = { revisionId: 'new-revision-123' };
+    jest.spyOn(client, 'update').mockResolvedValue(mockResponse);
+
+    const data: UpdateDatasetV2Request = {
+      schema: [
+        {
+          name: 'a',
+          required: false,
+          type: SchemaPropertyTypesEnum.String,
+        },
+      ],
+    };
+
+    const result = await client.update({ externalId: 'dataset', data });
+
+    expect(result).toEqual(mockResponse);
+  });
+});