diff --git a/src/version.cc b/src/version.cc
index bcb36f8bf4..e07a7b3520 100644
--- a/src/version.cc
+++ b/src/version.cc
@@ -11,7 +11,7 @@
 // system so their names cannot be changed without changing the scripts.
 #define MAJOR_VERSION     3
 #define MINOR_VERSION     28
-#define BUILD_NUMBER      51
+#define BUILD_NUMBER      55
 #define PATCH_LEVEL       0
 // Use 1 for candidates and 0 otherwise.
 // (Boolean macro values are not supported by all preprocessors.)