diff --git a/.gitmodules b/.gitmodules
index 4b9c64c..0ef4890 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,6 +1,8 @@
 [submodule "libchewing"]
 	path = libchewing
 	url = https://github.com/chewing/libchewing.git
+	branch = 0.8.x
 [submodule "libIME"]
 	path = libIME
 	url = https://github.com/EasyIME/libIME.git
+	branch = master
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 76f9a0b..53ebcad 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 2.8.11)
+cmake_minimum_required(VERSION 3.24.0)
 
 # override default c/c++ flags, add /MT to link VC++ runtime statically.
 set(CMAKE_USER_MAKE_RULES_OVERRIDE	${CMAKE_CURRENT_SOURCE_DIR}/cmake/c_flag_overrides.cmake)
diff --git a/ChewingPreferences/CMakeLists.txt b/ChewingPreferences/CMakeLists.txt
index c69f6f8..5dab89e 100644
--- a/ChewingPreferences/CMakeLists.txt
+++ b/ChewingPreferences/CMakeLists.txt
@@ -1,5 +1,3 @@
-cmake_minimum_required(VERSION 2.8.8)
-
 project(ChewingPreferences)
 
 # http://www.utf8everywhere.org/
diff --git a/ChewingTextService/CMakeLists.txt b/ChewingTextService/CMakeLists.txt
index 9f39bec..7d66562 100644
--- a/ChewingTextService/CMakeLists.txt
+++ b/ChewingTextService/CMakeLists.txt
@@ -1,5 +1,3 @@
-cmake_minimum_required(VERSION 2.8.8)
-
 project(ChewingTextService)
 
 if(NOT DEFINED PROJECT_LIBCHEWING)
diff --git a/chewingwrapper/CMakeLists.txt b/chewingwrapper/CMakeLists.txt
index f4c5122..c12458b 100644
--- a/chewingwrapper/CMakeLists.txt
+++ b/chewingwrapper/CMakeLists.txt
@@ -1,4 +1,3 @@
-cmake_minimum_required(VERSION 2.8.8)
 project(chewingwrapper)
 
 if(NOT DEFINED PROJECT_LIBCHEWING OR NOT DEFINED CHEWING_DATA_PREFIX)
diff --git a/libIME b/libIME
index d4e6cb4..d347cb6 160000
--- a/libIME
+++ b/libIME
@@ -1 +1 @@
-Subproject commit d4e6cb41ea7d673a3b679ec9af282cea6e22cd6a
+Subproject commit d347cb63747c510a599df08602b7aeb060726dc3
diff --git a/libchewing b/libchewing
index ce66aa6..b57d968 160000
--- a/libchewing
+++ b/libchewing
@@ -1 +1 @@
-Subproject commit ce66aa6e993363a26ea312f9c315ae68c793ec50
+Subproject commit b57d968bfaee4c893b581eeccfe5429f61a94581