diff --git a/src/bt_ifcmanager.rb b/src/bt_ifcmanager.rb
index fcba08c..d0a57e0 100644
--- a/src/bt_ifcmanager.rb
+++ b/src/bt_ifcmanager.rb
@@ -32,7 +32,7 @@ module BimTools
 
   module IfcManager
     # Version and release information.
-    VERSION = '5.2.0'
+    VERSION = '5.2.1'
 
     # load plugin only if SketchUp version is PRO
     # raised minimum version to 2017 due to switch to htmldialog