diff --git a/src/Watcher.cc b/src/Watcher.cc
index abb7ae6..4c7e24e 100644
--- a/src/Watcher.cc
+++ b/src/Watcher.cc
@@ -66,6 +66,11 @@ void Watcher::notify() {
   mCond.notify_all();
 
   if (mCallbacks.size() > 0 && mEvents.size() > 0) {
+    // We must release our lock before calling into the debouncer
+    // to avoid a deadlock: the debouncer thread itself will require 
+    // our lock from its thread when calling into `triggerCallbacks` 
+    // while holding its own debouncer lock.
+    lk.unlock();
     mDebounce->trigger();
   }
 }