diff --git a/BUILD b/BUILD
index a71ee74..751b2cf 100644
--- a/BUILD
+++ b/BUILD
@@ -79,7 +79,7 @@
 
 core_version = "9.0.0"
 
-version = "1.28.0-pre1"
+version = "1.28.0-pre2"
 
 GPR_PUBLIC_HDRS = [
     "include/grpc/support/alloc.h",
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 37622c1..c67f6ea 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -25,12 +25,12 @@
 cmake_minimum_required(VERSION 3.5.1)
 
 set(PACKAGE_NAME          "grpc")
-set(PACKAGE_VERSION       "1.28.0-pre1")
+set(PACKAGE_VERSION       "1.28.0-pre2")
 set(gRPC_CORE_VERSION     "9.0.0")
 set(gRPC_CORE_SOVERSION   "9")
-set(gRPC_CPP_VERSION      "1.28.0-pre1")
+set(gRPC_CPP_VERSION      "1.28.0-pre2")
 set(gRPC_CPP_SOVERSION    "1")
-set(gRPC_CSHARP_VERSION   "2.28.0-pre1")
+set(gRPC_CSHARP_VERSION   "2.28.0-pre2")
 set(gRPC_CSHARP_SOVERSION "2")
 set(PACKAGE_STRING        "${PACKAGE_NAME} ${PACKAGE_VERSION}")
 set(PACKAGE_TARNAME       "${PACKAGE_NAME}-${PACKAGE_VERSION}")
diff --git a/Makefile b/Makefile
index fa82913..e83875c 100644
--- a/Makefile
+++ b/Makefile
@@ -470,8 +470,8 @@
 endif
 
 CORE_VERSION = 9.0.0
-CPP_VERSION = 1.28.0-pre1
-CSHARP_VERSION = 2.28.0-pre1
+CPP_VERSION = 1.28.0-pre2
+CSHARP_VERSION = 2.28.0-pre2
 
 CPPFLAGS_NO_ARCH += $(addprefix -I, $(INCLUDES)) $(addprefix -D, $(DEFINES))
 CPPFLAGS += $(CPPFLAGS_NO_ARCH) $(ARCH_FLAGS)
diff --git a/build.yaml b/build.yaml
index 461f9d9..7ce867a 100644
--- a/build.yaml
+++ b/build.yaml
@@ -15,7 +15,7 @@
   core_version: 9.0.0
   csharp_major_version: 2
   g_stands_for: galactic
-  version: 1.28.0-pre1
+  version: 1.28.0-pre2
 filegroups:
 - name: alts_tsi
   headers:
diff --git a/gRPC-C++.podspec b/gRPC-C++.podspec
index c46170b..3a329f1 100644
--- a/gRPC-C++.podspec
+++ b/gRPC-C++.podspec
@@ -22,7 +22,7 @@
 Pod::Spec.new do |s|
   s.name     = 'gRPC-C++'
   # TODO (mxyan): use version that match gRPC version when pod is stabilized
-  version = '1.28.0-pre1'
+  version = '1.28.0-pre2'
   s.version  = version
   s.summary  = 'gRPC C++ library'
   s.homepage = 'https://grpc.io'
diff --git a/gRPC-Core.podspec b/gRPC-Core.podspec
index 751059b..3dfdb80 100644
--- a/gRPC-Core.podspec
+++ b/gRPC-Core.podspec
@@ -21,7 +21,7 @@
 
 Pod::Spec.new do |s|
   s.name     = 'gRPC-Core'
-  version = '1.28.0-pre1'
+  version = '1.28.0-pre2'
   s.version  = version
   s.summary  = 'Core cross-platform gRPC library, written in C'
   s.homepage = 'https://grpc.io'
diff --git a/gRPC-ProtoRPC.podspec b/gRPC-ProtoRPC.podspec
index 309a7a3..9160725 100644
--- a/gRPC-ProtoRPC.podspec
+++ b/gRPC-ProtoRPC.podspec
@@ -21,7 +21,7 @@
 
 Pod::Spec.new do |s|
   s.name     = 'gRPC-ProtoRPC'
-  version = '1.28.0-pre1'
+  version = '1.28.0-pre2'
   s.version  = version
   s.summary  = 'RPC library for Protocol Buffers, based on gRPC'
   s.homepage = 'https://grpc.io'
diff --git a/gRPC-RxLibrary.podspec b/gRPC-RxLibrary.podspec
index 1646e13..fa59bf3 100644
--- a/gRPC-RxLibrary.podspec
+++ b/gRPC-RxLibrary.podspec
@@ -21,7 +21,7 @@
 
 Pod::Spec.new do |s|
   s.name     = 'gRPC-RxLibrary'
-  version = '1.28.0-pre1'
+  version = '1.28.0-pre2'
   s.version  = version
   s.summary  = 'Reactive Extensions library for iOS/OSX.'
   s.homepage = 'https://grpc.io'
diff --git a/gRPC.podspec b/gRPC.podspec
index 8ece8a6..fa4fdcd 100644
--- a/gRPC.podspec
+++ b/gRPC.podspec
@@ -20,7 +20,7 @@
 
 Pod::Spec.new do |s|
   s.name     = 'gRPC'
-  version = '1.28.0-pre1'
+  version = '1.28.0-pre2'
   s.version  = version
   s.summary  = 'gRPC client library for iOS/OSX'
   s.homepage = 'https://grpc.io'
diff --git a/package.xml b/package.xml
index fba1a34..874feee 100644
--- a/package.xml
+++ b/package.xml
@@ -13,8 +13,8 @@
  <date>2019-09-24</date>
  <time>16:06:07</time>
  <version>
-  <release>1.28.0RC1</release>
-  <api>1.28.0RC1</api>
+  <release>1.28.0RC2</release>
+  <api>1.28.0RC2</api>
  </version>
  <stability>
   <release>beta</release>
diff --git a/src/cpp/common/version_cc.cc b/src/cpp/common/version_cc.cc
index 1b89c6f..9b5f5e1 100644
--- a/src/cpp/common/version_cc.cc
+++ b/src/cpp/common/version_cc.cc
@@ -22,5 +22,5 @@
 #include <grpcpp/grpcpp.h>
 
 namespace grpc {
-grpc::string Version() { return "1.28.0-pre1"; }
+grpc::string Version() { return "1.28.0-pre2"; }
 }  // namespace grpc
diff --git a/src/csharp/Grpc.Core.Api/VersionInfo.cs b/src/csharp/Grpc.Core.Api/VersionInfo.cs
index 3740d8e..1fff4c4 100644
--- a/src/csharp/Grpc.Core.Api/VersionInfo.cs
+++ b/src/csharp/Grpc.Core.Api/VersionInfo.cs
@@ -38,6 +38,6 @@
         /// <summary>
         /// Current version of gRPC C#
         /// </summary>
-        public const string CurrentVersion = "2.28.0-pre1";
+        public const string CurrentVersion = "2.28.0-pre2";
     }
 }
diff --git a/src/csharp/build/dependencies.props b/src/csharp/build/dependencies.props
index 1c1ee4e..003c8d5 100644
--- a/src/csharp/build/dependencies.props
+++ b/src/csharp/build/dependencies.props
@@ -1,7 +1,7 @@
 <!-- This file is generated -->
 <Project>
   <PropertyGroup>
-    <GrpcCsharpVersion>2.28.0-pre1</GrpcCsharpVersion>
+    <GrpcCsharpVersion>2.28.0-pre2</GrpcCsharpVersion>
     <GoogleProtobufVersion>3.11.2</GoogleProtobufVersion>
   </PropertyGroup>
 </Project>
diff --git a/src/csharp/build_unitypackage.bat b/src/csharp/build_unitypackage.bat
index 8be547a..b65b928 100644
--- a/src/csharp/build_unitypackage.bat
+++ b/src/csharp/build_unitypackage.bat
@@ -13,7 +13,7 @@
 @rem limitations under the License.
 
 @rem Current package versions
-set VERSION=2.28.0-pre1
+set VERSION=2.28.0-pre2
 
 @rem Adjust the location of nuget.exe
 set NUGET=C:\nuget\nuget.exe
diff --git "a/src/objective-c/\041ProtoCompiler-gRPCCppPlugin.podspec" "b/src/objective-c/\041ProtoCompiler-gRPCCppPlugin.podspec"
index 70dfd24..3308a1e 100644
--- "a/src/objective-c/\041ProtoCompiler-gRPCCppPlugin.podspec"
+++ "b/src/objective-c/\041ProtoCompiler-gRPCCppPlugin.podspec"
@@ -42,7 +42,7 @@
   # exclamation mark ensures that other "regular" pods will be able to find it as it'll be installed
   # before them.
   s.name     = '!ProtoCompiler-gRPCCppPlugin'
-  v = '1.28.0-pre1'
+  v = '1.28.0-pre2'
   s.version  = v
   s.summary  = 'The gRPC ProtoC plugin generates C++ files from .proto services.'
   s.description = <<-DESC
diff --git "a/src/objective-c/\041ProtoCompiler-gRPCPlugin.podspec" "b/src/objective-c/\041ProtoCompiler-gRPCPlugin.podspec"
index deb0068..1eb76e8 100644
--- "a/src/objective-c/\041ProtoCompiler-gRPCPlugin.podspec"
+++ "b/src/objective-c/\041ProtoCompiler-gRPCPlugin.podspec"
@@ -42,7 +42,7 @@
   # exclamation mark ensures that other "regular" pods will be able to find it as it'll be installed
   # before them.
   s.name     = '!ProtoCompiler-gRPCPlugin'
-  v = '1.28.0-pre1'
+  v = '1.28.0-pre2'
   s.version  = v
   s.summary  = 'The gRPC ProtoC plugin generates Objective-C files from .proto services.'
   s.description = <<-DESC
diff --git a/src/objective-c/GRPCClient/version.h b/src/objective-c/GRPCClient/version.h
index cc02f6d..c87eaff 100644
--- a/src/objective-c/GRPCClient/version.h
+++ b/src/objective-c/GRPCClient/version.h
@@ -22,4 +22,4 @@
 // instead. This file can be regenerated from the template by running
 // `tools/buildgen/generate_projects.sh`.
 
-#define GRPC_OBJC_VERSION_STRING @"1.28.0-pre1"
+#define GRPC_OBJC_VERSION_STRING @"1.28.0-pre2"
diff --git a/src/objective-c/tests/version.h b/src/objective-c/tests/version.h
index 4aaff67..2e7a0a6 100644
--- a/src/objective-c/tests/version.h
+++ b/src/objective-c/tests/version.h
@@ -22,5 +22,5 @@
 // instead. This file can be regenerated from the template by running
 // `tools/buildgen/generate_projects.sh`.
 
-#define GRPC_OBJC_VERSION_STRING @"1.28.0-pre1"
+#define GRPC_OBJC_VERSION_STRING @"1.28.0-pre2"
 #define GRPC_C_VERSION_STRING @"9.0.0"
diff --git a/src/php/ext/grpc/version.h b/src/php/ext/grpc/version.h
index 61406db..0e07ad4 100644
--- a/src/php/ext/grpc/version.h
+++ b/src/php/ext/grpc/version.h
@@ -20,6 +20,6 @@
 #ifndef VERSION_H
 #define VERSION_H
 
-#define PHP_GRPC_VERSION "1.28.0RC1"
+#define PHP_GRPC_VERSION "1.28.0RC2"
 
 #endif /* VERSION_H */
diff --git a/src/python/grpcio/grpc/_grpcio_metadata.py b/src/python/grpcio/grpc/_grpcio_metadata.py
index bcc16fb..f1ebfa5 100644
--- a/src/python/grpcio/grpc/_grpcio_metadata.py
+++ b/src/python/grpcio/grpc/_grpcio_metadata.py
@@ -14,4 +14,4 @@
 
 # AUTO-GENERATED FROM `$REPO_ROOT/templates/src/python/grpcio/grpc/_grpcio_metadata.py.template`!!!
 
-__version__ = """1.28.0rc1"""
+__version__ = """1.28.0rc2"""
diff --git a/src/python/grpcio/grpc_version.py b/src/python/grpcio/grpc_version.py
index 4e49705..58f2e85 100644
--- a/src/python/grpcio/grpc_version.py
+++ b/src/python/grpcio/grpc_version.py
@@ -14,4 +14,4 @@
 
 # AUTO-GENERATED FROM `$REPO_ROOT/templates/src/python/grpcio/grpc_version.py.template`!!!
 
-VERSION = '1.28.0rc1'
+VERSION = '1.28.0rc2'
diff --git a/src/python/grpcio_channelz/grpc_version.py b/src/python/grpcio_channelz/grpc_version.py
index c237945..3174486 100644
--- a/src/python/grpcio_channelz/grpc_version.py
+++ b/src/python/grpcio_channelz/grpc_version.py
@@ -14,4 +14,4 @@
 
 # AUTO-GENERATED FROM `$REPO_ROOT/templates/src/python/grpcio_channelz/grpc_version.py.template`!!!
 
-VERSION = '1.28.0rc1'
+VERSION = '1.28.0rc2'
diff --git a/src/python/grpcio_health_checking/grpc_version.py b/src/python/grpcio_health_checking/grpc_version.py
index d804ce5..d5fd3c6 100644
--- a/src/python/grpcio_health_checking/grpc_version.py
+++ b/src/python/grpcio_health_checking/grpc_version.py
@@ -14,4 +14,4 @@
 
 # AUTO-GENERATED FROM `$REPO_ROOT/templates/src/python/grpcio_health_checking/grpc_version.py.template`!!!
 
-VERSION = '1.28.0rc1'
+VERSION = '1.28.0rc2'
diff --git a/src/python/grpcio_reflection/grpc_version.py b/src/python/grpcio_reflection/grpc_version.py
index 6825caa..4d385ac 100644
--- a/src/python/grpcio_reflection/grpc_version.py
+++ b/src/python/grpcio_reflection/grpc_version.py
@@ -14,4 +14,4 @@
 
 # AUTO-GENERATED FROM `$REPO_ROOT/templates/src/python/grpcio_reflection/grpc_version.py.template`!!!
 
-VERSION = '1.28.0rc1'
+VERSION = '1.28.0rc2'
diff --git a/src/python/grpcio_status/grpc_version.py b/src/python/grpcio_status/grpc_version.py
index 44d9bf9..52a6d0f 100644
--- a/src/python/grpcio_status/grpc_version.py
+++ b/src/python/grpcio_status/grpc_version.py
@@ -14,4 +14,4 @@
 
 # AUTO-GENERATED FROM `$REPO_ROOT/templates/src/python/grpcio_status/grpc_version.py.template`!!!
 
-VERSION = '1.28.0rc1'
+VERSION = '1.28.0rc2'
diff --git a/src/python/grpcio_testing/grpc_version.py b/src/python/grpcio_testing/grpc_version.py
index d559e10..f09fbf2 100644
--- a/src/python/grpcio_testing/grpc_version.py
+++ b/src/python/grpcio_testing/grpc_version.py
@@ -14,4 +14,4 @@
 
 # AUTO-GENERATED FROM `$REPO_ROOT/templates/src/python/grpcio_testing/grpc_version.py.template`!!!
 
-VERSION = '1.28.0rc1'
+VERSION = '1.28.0rc2'
diff --git a/src/python/grpcio_tests/grpc_version.py b/src/python/grpcio_tests/grpc_version.py
index acca156..269f2d4 100644
--- a/src/python/grpcio_tests/grpc_version.py
+++ b/src/python/grpcio_tests/grpc_version.py
@@ -14,4 +14,4 @@
 
 # AUTO-GENERATED FROM `$REPO_ROOT/templates/src/python/grpcio_tests/grpc_version.py.template`!!!
 
-VERSION = '1.28.0rc1'
+VERSION = '1.28.0rc2'
diff --git a/src/ruby/lib/grpc/version.rb b/src/ruby/lib/grpc/version.rb
index 3576bbd..f998f6b 100644
--- a/src/ruby/lib/grpc/version.rb
+++ b/src/ruby/lib/grpc/version.rb
@@ -14,5 +14,5 @@
 
 # GRPC contains the General RPC module.
 module GRPC
-  VERSION = '1.28.0.pre1'
+  VERSION = '1.28.0.pre2'
 end
diff --git a/src/ruby/tools/version.rb b/src/ruby/tools/version.rb
index 41023aa..b3e70af 100644
--- a/src/ruby/tools/version.rb
+++ b/src/ruby/tools/version.rb
@@ -14,6 +14,6 @@
 
 module GRPC
   module Tools
-    VERSION = '1.28.0.pre1'
+    VERSION = '1.28.0.pre2'
   end
 end
diff --git a/tools/distrib/python/grpcio_tools/grpc_version.py b/tools/distrib/python/grpcio_tools/grpc_version.py
index 0cfb646..bb46ed2 100644
--- a/tools/distrib/python/grpcio_tools/grpc_version.py
+++ b/tools/distrib/python/grpcio_tools/grpc_version.py
@@ -14,4 +14,4 @@
 
 # AUTO-GENERATED FROM `$REPO_ROOT/templates/tools/distrib/python/grpcio_tools/grpc_version.py.template`!!!
 
-VERSION = '1.28.0rc1'
+VERSION = '1.28.0rc2'
diff --git a/tools/doxygen/Doxyfile.c++ b/tools/doxygen/Doxyfile.c++
index 7174968..d88f128 100644
--- a/tools/doxygen/Doxyfile.c++
+++ b/tools/doxygen/Doxyfile.c++
@@ -40,7 +40,7 @@
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 1.28.0-pre1
+PROJECT_NUMBER         = 1.28.0-pre2
 
 # 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 073da78..e28c8e9 100644
--- a/tools/doxygen/Doxyfile.c++.internal
+++ b/tools/doxygen/Doxyfile.c++.internal
@@ -40,7 +40,7 @@
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 1.28.0-pre1
+PROJECT_NUMBER         = 1.28.0-pre2
 
 # 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.objc b/tools/doxygen/Doxyfile.objc
index d54634e..b4ed092 100644
--- a/tools/doxygen/Doxyfile.objc
+++ b/tools/doxygen/Doxyfile.objc
@@ -40,7 +40,7 @@
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 1.28.0-pre1
+PROJECT_NUMBER         = 1.28.0-pre2
 
 # 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.objc.internal b/tools/doxygen/Doxyfile.objc.internal
index df473ae..cf46035 100644
--- a/tools/doxygen/Doxyfile.objc.internal
+++ b/tools/doxygen/Doxyfile.objc.internal
@@ -40,7 +40,7 @@
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 1.28.0-pre1
+PROJECT_NUMBER         = 1.28.0-pre2
 
 # 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