diff --git a/CMakeLists.txt b/CMakeLists.txt
index b87c77f064cc4518d71e029e21ecfd187b394071..584a35777d441752f393174e835c12c58aa79d3c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -24,12 +24,12 @@
 cmake_minimum_required(VERSION 3.5.1)
 
 set(PACKAGE_NAME          "grpc")
-set(PACKAGE_VERSION       "1.25.0-dev")
+set(PACKAGE_VERSION       "1.26.0-dev")
 set(gRPC_CORE_VERSION     "8.0.0")
 set(gRPC_CORE_SOVERSION   "8")
-set(gRPC_CPP_VERSION      "1.25.0-dev")
+set(gRPC_CPP_VERSION      "1.26.0-dev")
 set(gRPC_CPP_SOVERSION    "1")
-set(gRPC_CSHARP_VERSION   "2.25.0-dev")
+set(gRPC_CSHARP_VERSION   "2.26.0-dev")
 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 80c22383d372fb9d4a6d8da74618275d82c41cb7..59ba18b44a34c32832bdbc89e4e4a8335208abd0 100644
--- a/Makefile
+++ b/Makefile
@@ -461,8 +461,8 @@ Q = @
 endif
 
 CORE_VERSION = 8.0.0
-CPP_VERSION = 1.25.0-dev
-CSHARP_VERSION = 2.25.0-dev
+CPP_VERSION = 1.26.0-dev
+CSHARP_VERSION = 2.26.0-dev
 
 CPPFLAGS_NO_ARCH += $(addprefix -I, $(INCLUDES)) $(addprefix -D, $(DEFINES))
 CPPFLAGS += $(CPPFLAGS_NO_ARCH) $(ARCH_FLAGS)
diff --git a/gRPC-C++.podspec b/gRPC-C++.podspec
index c0b4e654a2c01954cad0be0916e7ce605b9c17fa..6ca0742a6b262fb64e46c5ba05f3c1e61d877623 100644
--- a/gRPC-C++.podspec
+++ b/gRPC-C++.podspec
@@ -23,7 +23,7 @@
 Pod::Spec.new do |s|
   s.name     = 'gRPC-C++'
   # TODO (mxyan): use version that match gRPC version when pod is stabilized
-  # version = '1.25.0-dev'
+  # version = '1.26.0-dev'
   version = '0.0.9-dev'
   s.version  = version
   s.summary  = 'gRPC C++ library'
@@ -31,7 +31,7 @@ Pod::Spec.new do |s|
   s.license  = 'Apache License, Version 2.0'
   s.authors  = { 'The gRPC contributors' => 'grpc-packages@google.com' }
 
-  grpc_version = '1.25.0-dev'
+  grpc_version = '1.26.0-dev'
 
   s.source = {
     :git => 'https://github.com/grpc/grpc.git',
diff --git a/gRPC-Core.podspec b/gRPC-Core.podspec
index 13db6b975e6554f9f32b128fa41932462335c2c8..8f4f3b4f2c1be19abe33fc870332dca5f7c7325a 100644
--- a/gRPC-Core.podspec
+++ b/gRPC-Core.podspec
@@ -22,7 +22,7 @@
 
 Pod::Spec.new do |s|
   s.name     = 'gRPC-Core'
-  version = '1.25.0-dev'
+  version = '1.26.0-dev'
   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 551999bbea88aa2f13f9ccf5db1130d32d31ac85..43ab2557a0901bf118f332f188bc1f3006076831 100644
--- a/gRPC-ProtoRPC.podspec
+++ b/gRPC-ProtoRPC.podspec
@@ -21,7 +21,7 @@
 
 Pod::Spec.new do |s|
   s.name     = 'gRPC-ProtoRPC'
-  version = '1.25.0-dev'
+  version = '1.26.0-dev'
   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 dfa9363cd2c88a710e482aa4510bc404c4b1fd8a..d90c0de70e5000ea3349ac4426d1045b50b5600b 100644
--- a/gRPC-RxLibrary.podspec
+++ b/gRPC-RxLibrary.podspec
@@ -21,7 +21,7 @@
 
 Pod::Spec.new do |s|
   s.name     = 'gRPC-RxLibrary'
-  version = '1.25.0-dev'
+  version = '1.26.0-dev'
   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 38dc708ec0d045fa87421429748bfe1a421f58ee..77cbda576af27f21e17f86bc64881211f4af2d15 100644
--- a/gRPC.podspec
+++ b/gRPC.podspec
@@ -20,7 +20,7 @@
 
 Pod::Spec.new do |s|
   s.name     = 'gRPC'
-  version = '1.25.0-dev'
+  version = '1.26.0-dev'
   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 73b1a8e89366b95cd1dd73729d4e143154517482..30bd45170eacb77ca422b2c5bdbe2fc11fe69d87 100644
--- a/package.xml
+++ b/package.xml
@@ -13,8 +13,8 @@
  <date>2019-09-24</date>
  <time>16:06:07</time>
  <version>
-  <release>1.25.0dev</release>
-  <api>1.25.0dev</api>
+  <release>1.26.0dev</release>
+  <api>1.26.0dev</api>
  </version>
  <stability>
   <release>beta</release>
@@ -22,7 +22,7 @@
  </stability>
  <license>Apache 2.0</license>
  <notes>
-- gRPC Core 1.25.0 update
+- gRPC Core 1.26.0 update
  </notes>
  <contents>
   <dir baseinstalldir="/" name="/">
diff --git a/src/core/lib/surface/version.cc b/src/core/lib/surface/version.cc
index d05b6ab95634d9f679c67dca4cdc42f08ac50603..fde716acd3b40be54f54a3258405b6b9e44155f0 100644
--- a/src/core/lib/surface/version.cc
+++ b/src/core/lib/surface/version.cc
@@ -25,4 +25,4 @@
 
 const char* grpc_version_string(void) { return "8.0.0"; }
 
-const char* grpc_g_stands_for(void) { return "game"; }
+const char* grpc_g_stands_for(void) { return "gon"; }
diff --git a/src/cpp/common/version_cc.cc b/src/cpp/common/version_cc.cc
index 041956ecf5cc0b0077f30798c7f04e1dfc09d066..08c2868dac66b54ef1f0cc9338f6fd66b83120be 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 "1.25.0-dev"; }
+grpc::string Version() { return "1.26.0-dev"; }
 }  // namespace grpc
diff --git a/src/csharp/Grpc.Core.Api/VersionInfo.cs b/src/csharp/Grpc.Core.Api/VersionInfo.cs
index 6d540155d9ace07d164b895cb0d0a8b7c45f97e8..a1330d62738f3cccfcc4443639bc4bb123bc045b 100644
--- a/src/csharp/Grpc.Core.Api/VersionInfo.cs
+++ b/src/csharp/Grpc.Core.Api/VersionInfo.cs
@@ -33,11 +33,11 @@ namespace Grpc.Core
         /// <summary>
         /// Current <c>AssemblyFileVersion</c> of gRPC C# assemblies
         /// </summary>
-        public const string CurrentAssemblyFileVersion = "2.25.0.0";
+        public const string CurrentAssemblyFileVersion = "2.26.0.0";
 
         /// <summary>
         /// Current version of gRPC C#
         /// </summary>
-        public const string CurrentVersion = "2.25.0-dev";
+        public const string CurrentVersion = "2.26.0-dev";
     }
 }
diff --git a/src/csharp/build/dependencies.props b/src/csharp/build/dependencies.props
index df109183253d6a1c0864fd56c5c3b21961d08988..20037a8982f7d2aff4e3ecd1d5aa414d2471beef 100644
--- a/src/csharp/build/dependencies.props
+++ b/src/csharp/build/dependencies.props
@@ -1,7 +1,7 @@
 <!-- This file is generated -->
 <Project>
   <PropertyGroup>
-    <GrpcCsharpVersion>2.25.0-dev</GrpcCsharpVersion>
+    <GrpcCsharpVersion>2.26.0-dev</GrpcCsharpVersion>
     <GoogleProtobufVersion>3.8.0</GoogleProtobufVersion>
   </PropertyGroup>
 </Project>
diff --git a/src/csharp/build_unitypackage.bat b/src/csharp/build_unitypackage.bat
index 4e689754acab1328e255338410de4e35b885f492..a11571907844caf6e1fa55fba8f78a694d324bf5 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=2.25.0-dev
+set VERSION=2.26.0-dev
 
 @rem Adjust the location of nuget.exe
 set NUGET=C:\nuget\nuget.exe
diff --git a/src/objective-c/!ProtoCompiler-gRPCCppPlugin.podspec b/src/objective-c/!ProtoCompiler-gRPCCppPlugin.podspec
index 9103c785f8549f6ee9c32256ad9897a35712628e..34841f5cdf480dd1723545d9cd99341e38edb03e 100644
--- a/src/objective-c/!ProtoCompiler-gRPCCppPlugin.podspec
+++ b/src/objective-c/!ProtoCompiler-gRPCCppPlugin.podspec
@@ -42,7 +42,7 @@ Pod::Spec.new do |s|
   # 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 = '1.25.0-dev'
+  v = '1.26.0-dev'
   s.version  = v
   s.summary  = 'The gRPC ProtoC plugin generates C++ files from .proto services.'
   s.description = <<-DESC
diff --git a/src/objective-c/!ProtoCompiler-gRPCPlugin.podspec b/src/objective-c/!ProtoCompiler-gRPCPlugin.podspec
index 57230e6329c52a857fb418fa5405bea95b45cc85..293566f0c17ba15c275b34b42a1a32a6d65d8a56 100644
--- a/src/objective-c/!ProtoCompiler-gRPCPlugin.podspec
+++ b/src/objective-c/!ProtoCompiler-gRPCPlugin.podspec
@@ -42,7 +42,7 @@ Pod::Spec.new do |s|
   # 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 = '1.25.0-dev'
+  v = '1.26.0-dev'
   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 01ba728003deb801a2fa7efb95530b5a9e26f677..e123f1ca1671c4865f79f2ca3a594cf668c8e75a 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 @"1.25.0-dev"
+#define GRPC_OBJC_VERSION_STRING @"1.26.0-dev"
diff --git a/src/objective-c/tests/version.h b/src/objective-c/tests/version.h
index 54d05af82266312d3efdb68e5c883f1b94be91bf..2e7f5f5216c1674660fc55dce2f448adcf666757 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 @"1.25.0-dev"
+#define GRPC_OBJC_VERSION_STRING @"1.26.0-dev"
 #define GRPC_C_VERSION_STRING @"8.0.0"
diff --git a/src/php/composer.json b/src/php/composer.json
index 769f2285ed593130a6b37518f2c3c39f5ef62181..14f893fcb7708c45cb397e23fdb08217f62480aa 100644
--- a/src/php/composer.json
+++ b/src/php/composer.json
@@ -2,7 +2,7 @@
   "name": "grpc/grpc-dev",
   "description": "gRPC library for PHP - for Development use only",
   "license": "Apache-2.0",
-  "version": "1.25.0",
+  "version": "1.26.0",
   "require": {
     "php": ">=5.5.0",
     "google/protobuf": "^v3.3.0"
diff --git a/src/php/ext/grpc/version.h b/src/php/ext/grpc/version.h
index 8286312199026d12cb8250ec0b1086b61177dd27..2d7e9d45bc14926eea124a1071b166d3eef36d39 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 "1.25.0dev"
+#define PHP_GRPC_VERSION "1.26.0dev"
 
 #endif /* VERSION_H */
diff --git a/src/python/grpcio/grpc/_grpcio_metadata.py b/src/python/grpcio/grpc/_grpcio_metadata.py
index cf9055adb498fc070a4c848906b08a4047de17a8..c07e0a58ac61e64472aaabd8381f7c643ad9b37f 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__ = """1.25.0.dev0"""
+__version__ = """1.26.0.dev0"""
diff --git a/src/python/grpcio/grpc_version.py b/src/python/grpcio/grpc_version.py
index 3902f3fecacc736b52dbebd8787a9635faeb6f16..57b79d48dfaaefd755be0777d06654ca16eb757b 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 = '1.25.0.dev0'
+VERSION = '1.26.0.dev0'
diff --git a/src/python/grpcio_channelz/grpc_version.py b/src/python/grpcio_channelz/grpc_version.py
index 61a651d45d3489be4eaa4d104651a05030c60ecb..be1e97aee6c1c3f5f05da59ad1474438ffa51c0f 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 = '1.25.0.dev0'
+VERSION = '1.26.0.dev0'
diff --git a/src/python/grpcio_health_checking/grpc_version.py b/src/python/grpcio_health_checking/grpc_version.py
index 7e9703c3c93d9587f8359160fec8a1e5fdfea477..4f01713d4df10679a853ecbdcb279f079a8ddbb2 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 = '1.25.0.dev0'
+VERSION = '1.26.0.dev0'
diff --git a/src/python/grpcio_reflection/grpc_version.py b/src/python/grpcio_reflection/grpc_version.py
index 0c82a4c77680d126e4bae63259c3647253ff327c..5713bdba97082fa25503d435d0c133169b97b765 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 = '1.25.0.dev0'
+VERSION = '1.26.0.dev0'
diff --git a/src/python/grpcio_status/grpc_version.py b/src/python/grpcio_status/grpc_version.py
index 307d9ba7245d739728091cc824abd034b3ad971c..044f43ea3385b6178edc553250917cf5996770d8 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 = '1.25.0.dev0'
+VERSION = '1.26.0.dev0'
diff --git a/src/python/grpcio_testing/grpc_version.py b/src/python/grpcio_testing/grpc_version.py
index b6a2dc2ba2142e6ad578c7fbe88df1cc1670917c..845c7fdf0cbbc6f91055b20d39c8c15b0a24a986 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 = '1.25.0.dev0'
+VERSION = '1.26.0.dev0'
diff --git a/src/python/grpcio_tests/grpc_version.py b/src/python/grpcio_tests/grpc_version.py
index 4656e5af94a0740aa22766aea0ae31e087658aca..6afc11370c97068e3d9b5516491141e61647bf10 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 = '1.25.0.dev0'
+VERSION = '1.26.0.dev0'
diff --git a/src/ruby/lib/grpc/version.rb b/src/ruby/lib/grpc/version.rb
index 40744531d72c37817312c492c09c75c7d8e9f1b6..8124cc98b8702148f4f678e7fa0e65594972b3dd 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 = '1.25.0.dev'
+  VERSION = '1.26.0.dev'
 end
diff --git a/src/ruby/tools/version.rb b/src/ruby/tools/version.rb
index 4d67f9c6302f7ae8022672b61670eea333d9e8eb..14bdcd3a3e43407b8942594a965bb401af999ced 100644
--- a/src/ruby/tools/version.rb
+++ b/src/ruby/tools/version.rb
@@ -14,6 +14,6 @@
 
 module GRPC
   module Tools
-    VERSION = '1.25.0.dev'
+    VERSION = '1.26.0.dev'
   end
 end
diff --git a/tools/distrib/python/grpcio_tools/grpc_version.py b/tools/distrib/python/grpcio_tools/grpc_version.py
index 716add95195fb16661138b1c73ce1fc96389a3dc..9bd0306dc68bbf82c833e10ed8a746fc80660bbe 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 = '1.25.0.dev0'
+VERSION = '1.26.0.dev0'
diff --git a/tools/doxygen/Doxyfile.c++ b/tools/doxygen/Doxyfile.c++
index 344a705137e9bfbec863317bd51601ccf1a6c842..d4ce01ea62907ab4dbabc9c3026c666809b32539 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         = 1.25.0-dev
+PROJECT_NUMBER         = 1.26.0-dev
 
 # 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 71cdff42584e3923a68aeba6cede6276cd0acbcc..542258159bd7915a3d9cfa768d5b6807c532fa37 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         = 1.25.0-dev
+PROJECT_NUMBER         = 1.26.0-dev
 
 # 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