diff --git a/lib/debugger-proxy.js b/lib/debugger-proxy.js
index 2efc12a..b8e968b 100644
--- a/lib/debugger-proxy.js
+++ b/lib/debugger-proxy.js
@@ -54,6 +54,7 @@ export default class DebuggerProxy {
 
       this.activeDebugger = null
       this.activeSubscriptions.dispose()
+      this.activeSubscriptions = new CompositeDisposable()
 
       for (let breakpoint of this.breakpoints) {