diff --git a/tests/e2e/context_compaction/agent_controlled_e2e_test.ts b/tests/e2e/context_compaction/agent_controlled_e2e_test.ts
index 7d613d0c1..20b8493a4 100644
--- a/tests/e2e/context_compaction/agent_controlled_e2e_test.ts
+++ b/tests/e2e/context_compaction/agent_controlled_e2e_test.ts
@@ -13,8 +13,8 @@ import {
 } from '@google/adk';
 import {createUserContent} from '@google/genai';
 import * as dotenv from 'dotenv';
-import * as fs from 'fs';
-import * as path from 'path';
+import * as fs from 'node:fs';
+import * as path from 'node:path';
 import {describe, expect, it} from 'vitest';
 import {createAgentControlledCompactionAgent} from './agent.js';
 
diff --git a/tests/e2e/context_compaction/e2e_anchored_compaction_test.ts b/tests/e2e/context_compaction/e2e_anchored_compaction_test.ts
index 779cf1284..5d89a5353 100644
--- a/tests/e2e/context_compaction/e2e_anchored_compaction_test.ts
+++ b/tests/e2e/context_compaction/e2e_anchored_compaction_test.ts
@@ -19,8 +19,8 @@ import {
 } from '@google/adk';
 import {createUserContent} from '@google/genai';
 import * as dotenv from 'dotenv';
-import * as fs from 'fs';
-import * as path from 'path';
+import * as fs from 'node:fs';
+import * as path from 'node:path';
 import {describe, expect, it} from 'vitest';
 
 class TestCompactionPlugin extends BasePlugin {
diff --git a/tests/e2e/context_compaction/e2e_compaction_test.ts b/tests/e2e/context_compaction/e2e_compaction_test.ts
index bf9ff82ca..12c3dd349 100644
--- a/tests/e2e/context_compaction/e2e_compaction_test.ts
+++ b/tests/e2e/context_compaction/e2e_compaction_test.ts
@@ -13,8 +13,8 @@ import {
 } from '@google/adk';
 import {createUserContent} from '@google/genai';
 import * as dotenv from 'dotenv';
-import * as fs from 'fs';
-import * as path from 'path';
+import * as fs from 'node:fs';
+import * as path from 'node:path';
 import {describe, expect, it} from 'vitest';
 import {createCompactionAgent} from './agent.js';
 
diff --git a/tests/e2e/context_compaction/e2e_compaction_vertexai_test.ts b/tests/e2e/context_compaction/e2e_compaction_vertexai_test.ts
index 3c7b38ddb..d82609891 100644
--- a/tests/e2e/context_compaction/e2e_compaction_vertexai_test.ts
+++ b/tests/e2e/context_compaction/e2e_compaction_vertexai_test.ts
@@ -16,8 +16,8 @@ import {
 } from '@google/adk';
 import {createUserContent} from '@google/genai';
 import * as dotenv from 'dotenv';
-import * as fs from 'fs';
-import * as path from 'path';
+import * as fs from 'node:fs';
+import * as path from 'node:path';
 import {describe, expect, it} from 'vitest';
 
 function createVertexAICompactionAgent(): LlmAgent {
diff --git a/tests/e2e/custom_metadata/custom_metadata_test.ts b/tests/e2e/custom_metadata/custom_metadata_test.ts
index b2ed3351d..921c386e7 100644
--- a/tests/e2e/custom_metadata/custom_metadata_test.ts
+++ b/tests/e2e/custom_metadata/custom_metadata_test.ts
@@ -7,9 +7,9 @@
 import {Agent, Gemini, InMemoryRunner} from '@google/adk';
 import {createUserContent} from '@google/genai';
 import * as dotenv from 'dotenv';
-import * as fs from 'fs';
-import * as path from 'path';
-import {fileURLToPath} from 'url';
+import * as fs from 'node:fs';
+import * as path from 'node:path';
+import {fileURLToPath} from 'node:url';
 import {describe, expect, it} from 'vitest';
 
 const __filename = fileURLToPath(import.meta.url);
diff --git a/tests/e2e/routing/ab_testing_agent_test.ts b/tests/e2e/routing/ab_testing_agent_test.ts
index 776646ced..f39fae70f 100644
--- a/tests/e2e/routing/ab_testing_agent_test.ts
+++ b/tests/e2e/routing/ab_testing_agent_test.ts
@@ -6,8 +6,8 @@
 
 import {InMemoryRunner, LlmAgent, RoutedAgent} from '@google/adk';
 import * as dotenv from 'dotenv';
-import * as fs from 'fs';
-import * as path from 'path';
+import * as fs from 'node:fs';
+import * as path from 'node:path';
 import {describe, expect, it} from 'vitest';
 
 const envPath = path.resolve(__dirname, '.env');
diff --git a/tests/e2e/routing/ab_testing_llm_test.ts b/tests/e2e/routing/ab_testing_llm_test.ts
index 54f21e8b6..db43178ae 100644
--- a/tests/e2e/routing/ab_testing_llm_test.ts
+++ b/tests/e2e/routing/ab_testing_llm_test.ts
@@ -6,8 +6,8 @@
 
 import {Gemini, LlmRequest, RoutedLlm} from '@google/adk';
 import * as dotenv from 'dotenv';
-import * as fs from 'fs';
-import * as path from 'path';
+import * as fs from 'node:fs';
+import * as path from 'node:path';
 import {describe, expect, it} from 'vitest';
 
 const envPath = path.resolve(__dirname, '.env');
diff --git a/tests/e2e/routing/auto_routing_agent_test.ts b/tests/e2e/routing/auto_routing_agent_test.ts
index d0c17968b..dafdc44d3 100644
--- a/tests/e2e/routing/auto_routing_agent_test.ts
+++ b/tests/e2e/routing/auto_routing_agent_test.ts
@@ -13,8 +13,8 @@ import {
   RoutedAgent,
 } from '@google/adk';
 import * as dotenv from 'dotenv';
-import * as fs from 'fs';
-import * as path from 'path';
+import * as fs from 'node:fs';
+import * as path from 'node:path';
 import {describe, expect, it} from 'vitest';
 
 const envPath = path.resolve(__dirname, '.env');
diff --git a/tests/e2e/routing/auto_routing_llm_test.ts b/tests/e2e/routing/auto_routing_llm_test.ts
index ebe7cc029..832d3a008 100644
--- a/tests/e2e/routing/auto_routing_llm_test.ts
+++ b/tests/e2e/routing/auto_routing_llm_test.ts
@@ -6,8 +6,8 @@
 
 import {BaseLlm, Gemini, LlmRequest, RoutedLlm} from '@google/adk';
 import * as dotenv from 'dotenv';
-import * as fs from 'fs';
-import * as path from 'path';
+import * as fs from 'node:fs';
+import * as path from 'node:path';
 import {describe, expect, it} from 'vitest';
 
 const envPath = path.resolve(__dirname, '.env');
diff --git a/tests/e2e/routing/model_fallback_test.ts b/tests/e2e/routing/model_fallback_test.ts
index c6ee36004..5eb1250d2 100644
--- a/tests/e2e/routing/model_fallback_test.ts
+++ b/tests/e2e/routing/model_fallback_test.ts
@@ -6,8 +6,8 @@
 
 import {BaseLlm, Gemini, LlmRequest, RoutedLlm} from '@google/adk';
 import * as dotenv from 'dotenv';
-import * as fs from 'fs';
-import * as path from 'path';
+import * as fs from 'node:fs';
+import * as path from 'node:path';
 import {describe, expect, it} from 'vitest';
 
 const envPath = path.resolve(__dirname, '.env');
diff --git a/tests/e2e/routing/planning_mode_test.ts b/tests/e2e/routing/planning_mode_test.ts
index 4302a7695..eae4bcf47 100644
--- a/tests/e2e/routing/planning_mode_test.ts
+++ b/tests/e2e/routing/planning_mode_test.ts
@@ -6,8 +6,8 @@
 
 import {FunctionTool, InMemoryRunner, LlmAgent, RoutedAgent} from '@google/adk';
 import * as dotenv from 'dotenv';
-import * as fs from 'fs';
-import * as path from 'path';
+import * as fs from 'node:fs';
+import * as path from 'node:path';
 import {describe, expect, it} from 'vitest';
 import {z} from 'zod';
 
diff --git a/tests/e2e/streaming/streaming_e2e_test.ts b/tests/e2e/streaming/streaming_e2e_test.ts
index 6b1abcf27..e7dba064b 100644
--- a/tests/e2e/streaming/streaming_e2e_test.ts
+++ b/tests/e2e/streaming/streaming_e2e_test.ts
@@ -13,8 +13,8 @@ import {
 } from '@google/adk';
 import {createUserContent} from '@google/genai';
 import * as dotenv from 'dotenv';
-import * as fs from 'fs';
-import * as path from 'path';
+import * as fs from 'node:fs';
+import * as path from 'node:path';
 import {describe, expect, it} from 'vitest';
 import {z} from 'zod';
 
diff --git a/tests/e2e/tools/agent_registry_e2e_test.ts b/tests/e2e/tools/agent_registry_e2e_test.ts
index 23f1bb49d..77ed490c0 100644
--- a/tests/e2e/tools/agent_registry_e2e_test.ts
+++ b/tests/e2e/tools/agent_registry_e2e_test.ts
@@ -7,8 +7,8 @@
 import {AgentRegistry, InMemoryRunner, LlmAgent} from '@google/adk';
 import {createUserContent} from '@google/genai';
 import * as dotenv from 'dotenv';
-import * as fs from 'fs';
-import * as path from 'path';
+import * as fs from 'node:fs';
+import * as path from 'node:path';
 import {describe, expect, it} from 'vitest';
 
 describe('E2E Live Agent Registry', () => {
diff --git a/tests/e2e/tools/agent_tool_e2e_test.ts b/tests/e2e/tools/agent_tool_e2e_test.ts
index 63357006b..cf0f5fbc3 100644
--- a/tests/e2e/tools/agent_tool_e2e_test.ts
+++ b/tests/e2e/tools/agent_tool_e2e_test.ts
@@ -7,8 +7,8 @@
 import {AgentTool, InMemoryRunner, LlmAgent, State} from '@google/adk';
 import {createUserContent} from '@google/genai';
 import * as dotenv from 'dotenv';
-import * as fs from 'fs';
-import * as path from 'path';
+import * as fs from 'node:fs';
+import * as path from 'node:path';
 import {describe, expect, it} from 'vitest';
 
 describe('E2E AgentTool State Filtering', () => {
diff --git a/tests/e2e/tools/before_tool_selection_test.ts b/tests/e2e/tools/before_tool_selection_test.ts
index e40e1ae0a..683d0a1f7 100644
--- a/tests/e2e/tools/before_tool_selection_test.ts
+++ b/tests/e2e/tools/before_tool_selection_test.ts
@@ -14,8 +14,8 @@ import {
 } from '@google/adk';
 import {createUserContent} from '@google/genai';
 import * as dotenv from 'dotenv';
-import * as fs from 'fs';
-import * as path from 'path';
+import * as fs from 'node:fs';
+import * as path from 'node:path';
 import {describe, expect, it} from 'vitest';
 
 class FilterPlugin extends BasePlugin {
diff --git a/tests/e2e/tools/load_artifacts_tool_test.ts b/tests/e2e/tools/load_artifacts_tool_test.ts
index b725f3a17..9dc0fbac1 100644
--- a/tests/e2e/tools/load_artifacts_tool_test.ts
+++ b/tests/e2e/tools/load_artifacts_tool_test.ts
@@ -7,8 +7,8 @@
 import {InMemoryRunner, LlmAgent, LOAD_ARTIFACTS} from '@google/adk';
 import {createUserContent} from '@google/genai';
 import * as dotenv from 'dotenv';
-import * as fs from 'fs';
-import * as path from 'path';
+import * as fs from 'node:fs';
+import * as path from 'node:path';
 import {describe, expect, it} from 'vitest';
 
 describe('E2E LoadArtifactsTool', () => {
diff --git a/tests/e2e/tools/load_memory_tool_test.ts b/tests/e2e/tools/load_memory_tool_test.ts
index 33cda21a9..e16713c28 100644
--- a/tests/e2e/tools/load_memory_tool_test.ts
+++ b/tests/e2e/tools/load_memory_tool_test.ts
@@ -7,8 +7,8 @@
 import {createEvent, InMemoryRunner, LlmAgent, LOAD_MEMORY} from '@google/adk';
 import {createUserContent} from '@google/genai';
 import * as dotenv from 'dotenv';
-import * as fs from 'fs';
-import * as path from 'path';
+import * as fs from 'node:fs';
+import * as path from 'node:path';
 import {describe, expect, it} from 'vitest';
 
 describe('E2E LoadMemoryTool', () => {
diff --git a/tests/e2e/tools/preload_memory_tool_test.ts b/tests/e2e/tools/preload_memory_tool_test.ts
index 641571d96..40de8587b 100644
--- a/tests/e2e/tools/preload_memory_tool_test.ts
+++ b/tests/e2e/tools/preload_memory_tool_test.ts
@@ -12,8 +12,8 @@ import {
 } from '@google/adk';
 import {createUserContent} from '@google/genai';
 import * as dotenv from 'dotenv';
-import * as fs from 'fs';
-import * as path from 'path';
+import * as fs from 'node:fs';
+import * as path from 'node:path';
 import {describe, expect, it} from 'vitest';
 
 describe('E2E PreloadMemoryTool', () => {
diff --git a/tests/e2e/tools/rest_api_tool_auth_e2e_test.ts b/tests/e2e/tools/rest_api_tool_auth_e2e_test.ts
index 50d55832d..459f3578e 100644
--- a/tests/e2e/tools/rest_api_tool_auth_e2e_test.ts
+++ b/tests/e2e/tools/rest_api_tool_auth_e2e_test.ts
@@ -7,10 +7,10 @@
 import {InMemoryRunner, LlmAgent, RestApiTool} from '@google/adk';
 import {createUserContent} from '@google/genai';
 import * as dotenv from 'dotenv';
-import * as fs from 'fs';
-import * as http from 'http';
+import * as fs from 'node:fs';
+import * as http from 'node:http';
+import * as path from 'node:path';
 import {OpenAPIV3} from 'openapi-types';
-import * as path from 'path';
 import {afterAll, beforeAll, describe, expect, it} from 'vitest';
 
 describe('RestApiTool Auth E2E', () => {
diff --git a/tests/e2e/tools/skills_registry_e2e_test.ts b/tests/e2e/tools/skills_registry_e2e_test.ts
index cc31a6882..dfcd17bb7 100644
--- a/tests/e2e/tools/skills_registry_e2e_test.ts
+++ b/tests/e2e/tools/skills_registry_e2e_test.ts
@@ -12,9 +12,9 @@ import {
 } from '@google/adk';
 import {createUserContent} from '@google/genai';
 import * as dotenv from 'dotenv';
-import * as fs from 'fs';
-import * as path from 'path';
-import {fileURLToPath} from 'url';
+import * as fs from 'node:fs';
+import * as path from 'node:path';
+import {fileURLToPath} from 'node:url';
 import {describe, expect, it} from 'vitest';
 
 const __filename = fileURLToPath(import.meta.url);