diff --git a/src/bcrypt_node.cc b/src/bcrypt_node.cc
index ce1c62c1..2f072a4f 100644
--- a/src/bcrypt_node.cc
+++ b/src/bcrypt_node.cc
@@ -1,3 +1,5 @@
+#define NAPI_VERSION 3
+
 #include <napi.h>
 
 #include <string>