diff --git a/src/jrd/build_no.h b/src/jrd/build_no.h
index 1179cb710b..f607e559c5 100644
--- a/src/jrd/build_no.h
+++ b/src/jrd/build_no.h
@@ -3,16 +3,16 @@
                *** DO NOT EDIT ***
   TO CHANGE ANY INFORMATION IN HERE PLEASE
   EDIT src/misc/writeBuildNum.sh
-  FORMAL BUILD NUMBER:21310 
+  FORMAL BUILD NUMBER:21311 
 */
 
-#define PRODUCT_VER_STRING "2.5.0.21310"
-#define FILE_VER_STRING "WI-T2.5.0.21310"
-#define LICENSE_VER_STRING "WI-T2.5.0.21310"
-#define FILE_VER_NUMBER 2, 5, 0, 21310
+#define PRODUCT_VER_STRING "2.5.0.21311"
+#define FILE_VER_STRING "WI-T2.5.0.21311"
+#define LICENSE_VER_STRING "WI-T2.5.0.21311"
+#define FILE_VER_NUMBER 2, 5, 0, 21311
 #define FB_MAJOR_VER "2"
 #define FB_MINOR_VER "5"
 #define FB_REV_NO "0"
-#define FB_BUILD_NO "21310"
+#define FB_BUILD_NO "21311"
 #define FB_BUILD_TYPE "T"
 #define FB_BUILD_SUFFIX "Firebird 2.5 Alpha 1 "