diff --git a/overviewer_core/src/overviewer.h b/overviewer_core/src/overviewer.h
index eefaae6..8376b4f 100644
--- a/overviewer_core/src/overviewer.h
+++ b/overviewer_core/src/overviewer.h
@@ -31,7 +31,7 @@
 
 // increment this value if you've made a change to the c extension
 // and want to force users to rebuild
-#define OVERVIEWER_EXTENSION_VERSION 84
+#define OVERVIEWER_EXTENSION_VERSION 85
 
 #include <stdbool.h>
 #include <stdint.h>