diff --git a/BUILD b/BUILD
index fc1dcbf2e1742731e7980d89d964959872e8f076..b56c427500e576bf41c5573bfa26769c1c427e4e 100644
--- a/BUILD
+++ b/BUILD
@@ -77,11 +77,11 @@ config_setting(
 python_config_settings()
 
 # This should be updated along with build.yaml
-g_stands_for = "gon"
+g_stands_for = "guantao"
 
 core_version = "9.0.0"
 
-version = "1.26.0-dev"
+version = "1.27.0-dev"
 
 GPR_PUBLIC_HDRS = [
     "include/grpc/support/alloc.h",
diff --git a/build.yaml b/build.yaml
index 5cb4b33261e6f6a023f34f12ab6040844310db45..8c70a455bd5c2aac5a796ce4f8aca6eb9a1ecf71 100644
--- a/build.yaml
+++ b/build.yaml
@@ -14,8 +14,8 @@ settings:
   '#10': See the expand_version.py for all the quirks here
   core_version: 9.0.0
   csharp_major_version: 2
-  g_stands_for: gon
-  version: 1.26.0-dev
+  g_stands_for: guantao
+  version: 1.27.0-dev
 filegroups:
 - name: alts_tsi
   headers:
diff --git a/doc/g_stands_for.md b/doc/g_stands_for.md
index 57f0c007e0567998cc705f618ec39d46d7892d4e..3ea0c7b43fe86d30c45efa140e863b854310a1a3 100644
--- a/doc/g_stands_for.md
+++ b/doc/g_stands_for.md
@@ -25,4 +25,5 @@
 - 1.23 'g' stands for ['gangnam'](https://github.com/grpc/grpc/tree/v1.23.x)
 - 1.24 'g' stands for ['ganges'](https://github.com/grpc/grpc/tree/v1.24.x)
 - 1.25 'g' stands for ['game'](https://github.com/grpc/grpc/tree/v1.25.x)
-- 1.26 'g' stands for ['gon'](https://github.com/grpc/grpc/tree/master)
+- 1.26 'g' stands for ['gon'](https://github.com/grpc/grpc/tree/v1.26.x)
+- 1.27 'g' stands for ['guantao'](https://github.com/grpc/grpc/tree/master)