diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4f2d1617d9..956ed0d868 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -24,7 +24,7 @@ set(FISCO_BCOS_CMAKE_DIR "${CMAKE_CURRENT_LIST_DIR}/cmake" CACHE PATH "The path
 list(APPEND CMAKE_MODULE_PATH ${FISCO_BCOS_CMAKE_DIR})
 set(CMAKE_OSX_DEPLOYMENT_TARGET "14" CACHE STRING "Minimum OS X deployment version")
 
-project(FISCO-BCOS VERSION "2.11.0")
+project(FISCO-BCOS VERSION "2.11.1")
 # Suffix like "-rc1" e.t.c. to append to versions wherever needed.
 set(VERSION_SUFFIX "")
 
diff --git a/tools/build_chain.sh b/tools/build_chain.sh
index afe329bd49..d92b550353 100755
--- a/tools/build_chain.sh
+++ b/tools/build_chain.sh
@@ -49,7 +49,7 @@ days=36500 # 100 years
 timestamp=$(($(date '+%s')*1000))
 chain_id=1
 compatibility_version=""
-default_version="2.11.0"
+default_version="2.11.1"
 rsa_key_length=2048
 macOS=""
 x86_64_arch="false"