diff --git a/Makefile b/Makefile
index c023ee96032ffc0ba44f7a8d05fcfd45834d950f..e86e8f15e579775593f4bc4bce7256b958ab4b18 100644
--- a/Makefile
+++ b/Makefile
@@ -361,7 +361,7 @@ E = @echo
 Q = @
 endif
 
-VERSION = 0.13.0-dev
+VERSION = 0.13.0-pre1
 
 CPPFLAGS_NO_ARCH += $(addprefix -I, $(INCLUDES)) $(addprefix -D, $(DEFINES))
 CPPFLAGS += $(CPPFLAGS_NO_ARCH) $(ARCH_FLAGS)
diff --git a/build.yaml b/build.yaml
index 292ce7d943989c9398a61466fdb19bc4b61052ed..0e9dc89d4241377edb76a7a0377abab8b789d1ed 100644
--- a/build.yaml
+++ b/build.yaml
@@ -7,7 +7,7 @@ settings:
   '#3': Use "-preN" suffixes to identify pre-release versions
   '#4': Per-language overrides are possible with (eg) ruby_version tag here
   '#5': See the expand_version.py for all the quirks here
-  version: 0.13.0-dev
+  version: 0.13.0-pre1
 filegroups:
 - name: census
   public_headers:
diff --git a/src/core/surface/version.c b/src/core/surface/version.c
index b33c99ab19d19af59a5c3820595c6a802a515d81..fc883da189d961fee261dc73b2860d55684488c8 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 "0.13.0-dev"; }
+const char *grpc_version_string(void) { return "0.13.0-pre1"; }
diff --git a/src/csharp/Grpc.Core/VersionInfo.cs b/src/csharp/Grpc.Core/VersionInfo.cs
index 7124ec85d36a65876f194734a64eb8fde23ecd7c..6b114eaf0ebf3de6f53a6449d120b849a8d5be30 100644
--- a/src/csharp/Grpc.Core/VersionInfo.cs
+++ b/src/csharp/Grpc.Core/VersionInfo.cs
@@ -41,6 +41,6 @@ namespace Grpc.Core
         /// <summary>
         /// Current version of gRPC C#
         /// </summary>
-        public const string CurrentVersion = "0.13.0-dev";
+        public const string CurrentVersion = "0.13.0-pre1";
     }
 }
diff --git a/src/csharp/build_packages.bat b/src/csharp/build_packages.bat
index 2c4e4e514d473f817509fb4c565e52215fca45b9..8ffd671011dc29971c76231f9afcca7c15a34249 100644
--- a/src/csharp/build_packages.bat
+++ b/src/csharp/build_packages.bat
@@ -1,7 +1,7 @@
 @rem Builds gRPC NuGet packages
 
 @rem Current package versions
-set VERSION=0.13.0-dev
+set VERSION=0.13.0-pre1
 set PROTOBUF_VERSION=3.0.0-beta2
 
 @rem Packages that depend on prerelease packages (like Google.Protobuf) need to have prerelease suffix as well.
diff --git a/src/python/grpcio/grpc_version.py b/src/python/grpcio/grpc_version.py
index 8a40544981fd95bc4261d95f7b81f331565636a3..b256871bd5e96974f0f8b961fb132ff6d6c7a652 100644
--- a/src/python/grpcio/grpc_version.py
+++ b/src/python/grpcio/grpc_version.py
@@ -29,4 +29,4 @@
 
 # AUTO-GENERATED FROM `$REPO_ROOT/templates/src/python/grpcio/grpc_version.py.template`!!!
 
-VERSION='0.13.0.dev0'
+VERSION='0.13.0rc1'
diff --git a/src/ruby/lib/grpc/version.rb b/src/ruby/lib/grpc/version.rb
index e701d5847898bba5f287894a24fec8ec910823c6..e98073c057307b46a4d4b424827a627d45a52e74 100644
--- a/src/ruby/lib/grpc/version.rb
+++ b/src/ruby/lib/grpc/version.rb
@@ -29,5 +29,5 @@
 
 # GRPC contains the General RPC module.
 module GRPC
-  VERSION = '0.13.0-dev'
+  VERSION = '0.13.0-pre1'
 end
diff --git a/tools/doxygen/Doxyfile.c++ b/tools/doxygen/Doxyfile.c++
index 5bc38a9aec9e89a32f8a40724db788d143663048..1a15e3972c5b570a7333473d9d97cb5622eb1c78 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         = 0.13.0-dev
+PROJECT_NUMBER         = 0.13.0-pre1
 
 # 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 ec71d2e9cddf717a0e00181e41b1200ccb50e740..41a0547a5c07c1c4080b9a1db190d304945555b9 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         = 0.13.0-dev
+PROJECT_NUMBER         = 0.13.0-pre1
 
 # 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 0f22620686cf253a5666999c5b8a86b5f469b1bf..a94970c65e8a6d56c3797808808949907a653d9a 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         = 0.13.0-dev
+PROJECT_NUMBER         = 0.13.0-pre1
 
 # 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 a3540778c1f8501f91ac4a6949df1985e062422b..0ab8208a9bb3062c016b4bd3b82a013e990ae0d5 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         = 0.13.0-dev
+PROJECT_NUMBER         = 0.13.0-pre1
 
 # 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