diff --git a/packages/pusher/src/heartbeat/heartbeat.test.ts b/packages/pusher/src/heartbeat/heartbeat.test.ts
index b7764188..8e159d3d 100644
--- a/packages/pusher/src/heartbeat/heartbeat.test.ts
+++ b/packages/pusher/src/heartbeat/heartbeat.test.ts
@@ -1,8 +1,11 @@
+import { readFileSync } from 'node:fs';
+import { join } from 'node:path';
+
 import * as promiseUtilsModule from '@api3/promise-utils';
 
 import { config, parseHeartbeatLog } from '../../test/fixtures';
 import * as stateModule from '../state';
-import { loadRawConfig } from '../validation/config';
+import * as configModule from '../validation/config';
 
 import { heartbeatLogger } from './logger';
 
@@ -24,11 +27,13 @@ describe(logHeartbeat.name, () => {
     '0.1.0',
     '1674172803',
     '1674172800',
-    '0x6d4306f70c5fe9d8608b4e0c1d72e06a366e6f60b8461a6a9a0833a7401f5778',
-    '0x6e6379a42b89bdc78286efd6f6ad94142765930c4843784f49ba955ea95c1cb64c432b41aecc1b220dc90d616332bbf7bdc7242a16eb0e31306dac96a6d6ee821b',
+    '0x126e768ba244efdb790d63a76821047e163dfc502ace09b2546a93075594c286',
+    '0x14f123ec1006bace8f8971cd8c94eb022b9bb0e1364e88ae4e8562a5f02de43e35dd4ecdefc976595eba5fec3d04222a0249e876453599b27847e85e14ff77601b',
   ].join(' - ');
 
   it('sends the correct heartbeat log', async () => {
+    const rawConfig = JSON.parse(readFileSync(join(__dirname, '../../config/pusher.example.json'), 'utf8'));
+    jest.spyOn(configModule, 'loadRawConfig').mockReturnValue(rawConfig);
     const state = stateModule.getInitialState(config);
     jest.spyOn(stateModule, 'getState').mockReturnValue(state);
     jest.spyOn(heartbeatLogger, 'info').mockImplementation();
@@ -40,16 +45,17 @@ describe(logHeartbeat.name, () => {
   });
 
   it('the heartbeat log can be parsed', () => {
-    const rawConfig = loadRawConfig();
+    const rawConfig = JSON.parse(readFileSync(join(__dirname, '../../config/pusher.example.json'), 'utf8'));
+    jest.spyOn(configModule, 'loadRawConfig').mockReturnValue(rawConfig);
     const expectedHeartbeatPayload = {
       airnodeAddress: '0xbF3137b0a7574563a23a8fC8badC6537F98197CC',
       stage: 'test',
       nodeVersion: '0.1.0',
       heartbeatTimestamp: '1674172803',
       deploymentTimestamp: '1674172800',
-      configHash: '0x6d4306f70c5fe9d8608b4e0c1d72e06a366e6f60b8461a6a9a0833a7401f5778',
+      configHash: '0x126e768ba244efdb790d63a76821047e163dfc502ace09b2546a93075594c286',
       signature:
-        '0x6e6379a42b89bdc78286efd6f6ad94142765930c4843784f49ba955ea95c1cb64c432b41aecc1b220dc90d616332bbf7bdc7242a16eb0e31306dac96a6d6ee821b',
+        '0x14f123ec1006bace8f8971cd8c94eb022b9bb0e1364e88ae4e8562a5f02de43e35dd4ecdefc976595eba5fec3d04222a0249e876453599b27847e85e14ff77601b',
     };
 
     const heartbeatPayload = parseHeartbeatLog(expectedLogMessage);