diff --git a/.gitmodules b/.gitmodules
index 6ef39354df..ac62b95d85 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -10,6 +10,3 @@
 [submodule "libraries/native/softfloat"]
 	path = libraries/native/softfloat
 	url = https://github.com/AntelopeIO/berkeley-softfloat-3
-[submodule "tools/external/antler-proj"]
-	path = tools/external/antler-proj
-	url = https://github.com/AntelopeIO/antler-proj
\ No newline at end of file
diff --git a/CMakeLists.txt b/CMakeLists.txt
index ee22a1bcbb..1c53deefe9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -15,7 +15,7 @@ project(cdt)
 
 set(VERSION_MAJOR 4)
 set(VERSION_MINOR 0)
-set(VERSION_PATCH 0)
+set(VERSION_PATCH 1)
 set(VERSION_SUFFIX "") 
 
 if (VERSION_SUFFIX)
@@ -93,17 +93,6 @@ configure_file(${CMAKE_SOURCE_DIR}/cdt-llvm/LICENSE.TXT ${CMAKE_BINARY_DIR}/lice
 configure_file(${CMAKE_SOURCE_DIR}/libraries/boost/boost.license ${CMAKE_BINARY_DIR}/licenses/boost.license COPYONLY)
 configure_file(${CMAKE_SOURCE_DIR}/libraries/meta_refl/LICENSE ${CMAKE_BINARY_DIR}/licenses/meta_refl.license COPYONLY)
 configure_file(${CMAKE_SOURCE_DIR}/tools/external/wabt/LICENSE ${CMAKE_BINARY_DIR}/licenses/wabt.license COPYONLY)
-configure_file(${CMAKE_SOURCE_DIR}/tools/external/antler-proj/LICENSE ${CMAKE_BINARY_DIR}/licenses/antler-proj.license COPYONLY)
-file(GLOB license_files ${CMAKE_SOURCE_DIR}/tools/external/antler-proj/licenses/*)
-# add licenses for antler-proj submodules
-foreach(full_path IN ITEMS ${license_files})
-   # change format to match other license filenames
-   get_filename_component(file_name ${full_path} NAME)
-   string(REPLACE "LICENSE." "" file_name ${file_name})
-   string(TOLOWER ${file_name} file_name)
-   set(file_name "${file_name}.license")
-   configure_file("${full_path}" "${CMAKE_BINARY_DIR}/licenses/${file_name}" COPYONLY)
-endforeach()
 configure_file(${CMAKE_SOURCE_DIR}/tools/jsoncons/LICENSE ${CMAKE_BINARY_DIR}/licenses/jsoncons.license COPYONLY)
 configure_file(${CMAKE_SOURCE_DIR}/LICENSE ${CMAKE_BINARY_DIR}/licenses/cdt.license COPYONLY)
 
diff --git a/modules/InstallCDT.cmake b/modules/InstallCDT.cmake
index 5a18b6d8b3..f5b977321f 100644
--- a/modules/InstallCDT.cmake
+++ b/modules/InstallCDT.cmake
@@ -74,7 +74,6 @@ cdt_tool_install_and_symlink(cdt-cpp cdt-cpp)
 cdt_tool_install_and_symlink(cdt-ld cdt-ld)
 cdt_tool_install_and_symlink(cdt-abidiff cdt-abidiff)
 cdt_tool_install_and_symlink(cdt-init cdt-init)
-cdt_tool_install_and_symlink(antler-proj antler-proj)
 
 cdt_clang_install(../lib/LLVMEosioApply${CMAKE_SHARED_LIBRARY_SUFFIX})
 cdt_clang_install(../lib/LLVMEosioSoftfloat${CMAKE_SHARED_LIBRARY_SUFFIX})
diff --git a/scripts/generate_tarball.sh b/scripts/generate_tarball.sh
index 4a1ccbc5f3..93a21d1b17 100644
--- a/scripts/generate_tarball.sh
+++ b/scripts/generate_tarball.sh
@@ -74,8 +74,6 @@ create_symlink cdt-objdump cdt-objdump
 create_symlink cdt-ranlib cdt-ranlib
 create_symlink cdt-readelf cdt-readelf
 create_symlink cdt-strip cdt-strip
-create_symlink antler-proj antler-proj
-create_symlink antler-proj cdt-proj
 
 echo "Generating Tarball $NAME.tar.gz..."
 tar -cvzf $NAME.tar.gz ./${PREFIX}/* || exit 1
diff --git a/tests/integration/CMakeLists.txt b/tests/integration/CMakeLists.txt
index 5dbcdbaaa1..cd2b3fec8b 100644
--- a/tests/integration/CMakeLists.txt
+++ b/tests/integration/CMakeLists.txt
@@ -1,7 +1,7 @@
 cmake_minimum_required( VERSION 3.5 )
 
 set(EOSIO_VERSION_MIN "3.1")
-set(EOSIO_VERSION_SOFT_MAX "4.0")
+set(EOSIO_VERSION_SOFT_MAX "5.0")
 #set(EOSIO_VERSION_HARD_MAX "")
 
 find_package(leap)
diff --git a/tools/CMakeLists.txt b/tools/CMakeLists.txt
index df4ebf1698..d0eb54044f 100644
--- a/tools/CMakeLists.txt
+++ b/tools/CMakeLists.txt
@@ -79,13 +79,3 @@ add_subdirectory(init)
 add_subdirectory(external)
 
 configure_file(${CMAKE_CURRENT_SOURCE_DIR}/include/compiler_options.hpp.in ${CMAKE_BINARY_DIR}/compiler_options.hpp)
-
-add_custom_command( OUTPUT ${CMAKE_BINARY_DIR}/bin/antler-proj
-                    COMMAND ${CMAKE_COMMAND} -E copy $<TARGET_FILE:antler-proj> ${CMAKE_BINARY_DIR}/bin/
-                    DEPENDS antler-proj
-                    WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/external/antler-proj/tools
-                  )
-
-add_custom_target(copy_files ALL
-    DEPENDS  ${CMAKE_BINARY_DIR}/bin/antler-proj
-)
diff --git a/tools/external/CMakeLists.txt b/tools/external/CMakeLists.txt
index 4f5e28cc78..eae7583dca 100644
--- a/tools/external/CMakeLists.txt
+++ b/tools/external/CMakeLists.txt
@@ -1,2 +1 @@
 add_subdirectory(wabt)
-add_subdirectory(antler-proj)
\ No newline at end of file
diff --git a/tools/external/antler-proj b/tools/external/antler-proj
deleted file mode 160000
index 2034b9a38f..0000000000
--- a/tools/external/antler-proj
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 2034b9a38f61aa1a55f17eed657d466bbcfcc6e6