diff --git a/Makefile b/Makefile
index 6643dd58c1bd6037c342d4bf3fb45e12c4baff57..e81370bb483d3f909a41353e35357b3d28356147 100644
--- a/Makefile
+++ b/Makefile
@@ -342,7 +342,7 @@ E = @echo
 Q = @
 endif
 
-VERSION = 0.12.0.0
+VERSION = 0.13.0.0
 
 CPPFLAGS_NO_ARCH += $(addprefix -I, $(INCLUDES)) $(addprefix -D, $(DEFINES))
 CPPFLAGS += $(CPPFLAGS_NO_ARCH) $(ARCH_FLAGS)
diff --git a/src/core/surface/version.c b/src/core/surface/version.c
index 962a72112a15c94d8e089a9efa3ec3f9ec400a67..aada18e07e490db6f6b2b387f6558eb0c706c1c2 100644
--- a/src/core/surface/version.c
+++ b/src/core/surface/version.c
@@ -36,4 +36,4 @@
 
 #include <grpc/grpc.h>
 
-const char *grpc_version_string(void) { return "0.12.0.0"; }
+const char *grpc_version_string(void) { return "0.13.0.0"; }
diff --git a/tools/doxygen/Doxyfile.c++ b/tools/doxygen/Doxyfile.c++
index 500d110ad0f86920c3d390ede9b4018d7080fffd..ad0ad65cb13e1d0a703007a7d4cabee2272f9abc 100644
--- a/tools/doxygen/Doxyfile.c++
+++ b/tools/doxygen/Doxyfile.c++
@@ -40,7 +40,7 @@ PROJECT_NAME           = "GRPC C++"
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 0.12.0.0
+PROJECT_NUMBER         = 0.13.0.0
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
diff --git a/tools/doxygen/Doxyfile.c++.internal b/tools/doxygen/Doxyfile.c++.internal
index ba1dec0d3897835e0b4d67a6837f76b32648c1fe..1d4b0cec7b032c08c966aff923220c2004d292c3 100644
--- a/tools/doxygen/Doxyfile.c++.internal
+++ b/tools/doxygen/Doxyfile.c++.internal
@@ -40,7 +40,7 @@ PROJECT_NAME           = "GRPC C++"
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 0.12.0.0
+PROJECT_NUMBER         = 0.13.0.0
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
diff --git a/tools/doxygen/Doxyfile.core b/tools/doxygen/Doxyfile.core
index 3a1d097fb950ae3165594257ebd4b8b5570f5bbc..db3db4e20031f3d633bb03846652ef6bd1665fd5 100644
--- a/tools/doxygen/Doxyfile.core
+++ b/tools/doxygen/Doxyfile.core
@@ -40,7 +40,7 @@ PROJECT_NAME           = "GRPC Core"
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 0.12.0.0
+PROJECT_NUMBER         = 0.13.0.0
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
diff --git a/tools/doxygen/Doxyfile.core.internal b/tools/doxygen/Doxyfile.core.internal
index 2280fde425fb45f3adc226eca88622b4ea31050a..4f8a21a6b1689c5144c1801a69f38fc7dbd07daa 100644
--- a/tools/doxygen/Doxyfile.core.internal
+++ b/tools/doxygen/Doxyfile.core.internal
@@ -40,7 +40,7 @@ PROJECT_NAME           = "GRPC Core"
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 0.12.0.0
+PROJECT_NUMBER         = 0.13.0.0
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a