diff --git a/src/jrd/ibase.h b/src/jrd/ibase.h
index e571f97a6c..7c4d7d0ada 100644
--- a/src/jrd/ibase.h
+++ b/src/jrd/ibase.h
@@ -44,7 +44,7 @@
 #ifndef JRD_IBASE_H
 #define JRD_IBASE_H
 
-#define FB_API_VER 20
+#define FB_API_VER 21
 #define isc_version4
 
 #define  ISC_TRUE	1