diff --git a/src/jrd/build_no.h b/src/jrd/build_no.h
index dd2250d0c6..df304e74b5 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:872
+  FORMAL BUILD NUMBER:873
 */
 
-#define PRODUCT_VER_STRING "4.0.0.872"
-#define FILE_VER_STRING "WI-T4.0.0.872"
-#define LICENSE_VER_STRING "WI-T4.0.0.872"
-#define FILE_VER_NUMBER 4, 0, 0, 872
+#define PRODUCT_VER_STRING "4.0.0.873"
+#define FILE_VER_STRING "WI-T4.0.0.873"
+#define LICENSE_VER_STRING "WI-T4.0.0.873"
+#define FILE_VER_NUMBER 4, 0, 0, 873
 #define FB_MAJOR_VER "4"
 #define FB_MINOR_VER "0"
 #define FB_REV_NO "0"
-#define FB_BUILD_NO "872"
+#define FB_BUILD_NO "873"
 #define FB_BUILD_TYPE "T"
 #define FB_BUILD_SUFFIX "Firebird 4.0 Alpha 1"
diff --git a/src/misc/writeBuildNum.sh b/src/misc/writeBuildNum.sh
index 7dc68a540c..7b25df2f51 100755
--- a/src/misc/writeBuildNum.sh
+++ b/src/misc/writeBuildNum.sh
@@ -9,7 +9,7 @@ BuildType=T
 MajorVer=4
 MinorVer=0
 RevNo=0
-BuildNum=872
+BuildNum=873
 
 NowAt=`pwd`
 cd `dirname $0`