diff --git a/src/webui/webapplication.cpp b/src/webui/webapplication.cpp
index 14f6136ea..5b91dfbf7 100644
--- a/src/webui/webapplication.cpp
+++ b/src/webui/webapplication.cpp
@@ -48,7 +48,7 @@
 
 using namespace libtorrent;
 
-static const int API_VERSION = 3;
+static const int API_VERSION = 4;
 static const int API_VERSION_MIN = 2;
 
 const QString WWW_FOLDER = ":/www/public/";