diff --git a/src/profilers/heap-profiler.ts b/src/profilers/heap-profiler.ts
index 03ef1faa..9a404803 100644
--- a/src/profilers/heap-profiler.ts
+++ b/src/profilers/heap-profiler.ts
@@ -4,6 +4,10 @@ import { Profile } from 'pprof-format';
 import { ProfileExport } from '../profile-exporter.js';
 import { Profiler } from './profiler.js';
 import debug from 'debug';
+import {
+  DEFAULT_SAMPLING_INTERVAL_BYTES,
+  DEFAULT_STACK_DEPTH,
+} from './pyroscope-profiler.js';
 
 const log = debug('pyroscope::profiler::heap');
 
@@ -16,6 +20,8 @@ export interface HeapProfilerStartArgs {
 export class HeapProfiler implements Profiler<HeapProfilerStartArgs> {
   private lastProfiledAt: Date;
   private sourceMapper: SourceMapper | undefined;
+  private samplingIntervalBytes: number = DEFAULT_SAMPLING_INTERVAL_BYTES;
+  private stackDepth: number = DEFAULT_STACK_DEPTH;
 
   constructor() {
     this.lastProfiledAt = new Date();
@@ -38,6 +44,9 @@ export class HeapProfiler implements Profiler<HeapProfilerStartArgs> {
       undefined
     );
 
+    heap.stop();
+    heap.start(this.samplingIntervalBytes, this.stackDepth);
+
     const lastProfileStartedAt: Date = this.lastProfiledAt;
     this.lastProfiledAt = new Date();
 
@@ -57,6 +66,8 @@ export class HeapProfiler implements Profiler<HeapProfilerStartArgs> {
 
     this.lastProfiledAt = new Date();
     this.sourceMapper = args.sourceMapper;
+    this.samplingIntervalBytes = args.samplingIntervalBytes;
+    this.stackDepth = args.stackDepth;
     heap.start(args.samplingIntervalBytes, args.stackDepth);
   }
 
diff --git a/src/profilers/pyroscope-profiler.ts b/src/profilers/pyroscope-profiler.ts
index 9e14782d..efc840fa 100644
--- a/src/profilers/pyroscope-profiler.ts
+++ b/src/profilers/pyroscope-profiler.ts
@@ -22,9 +22,10 @@ const DEFAULT_SAMPLING_INTERVAL_MICROS =
   MICROS_PER_SECOND / DEFAULT_SAMPLING_HZ;
 
 const DEFAULT_SAMPLING_INTERVAL_MB = 512;
-const DEFAULT_SAMPLING_INTERVAL_BYTES = B_PER_MB * DEFAULT_SAMPLING_INTERVAL_MB;
+export const DEFAULT_SAMPLING_INTERVAL_BYTES =
+  B_PER_MB * DEFAULT_SAMPLING_INTERVAL_MB;
 
-const DEFAULT_STACK_DEPTH = 64;
+export const DEFAULT_STACK_DEPTH = 64;
 
 const DEFAULT_APP_NAME = '';
 const DEFAULT_SERVER_ADDRESS = 'http://localhost:4040';