diff --git a/0001-add-secure-compile-option-in-Makefile.patch b/0001-add-secure-compile-option-in-Makefile.patch
index e6de4e8..5c93313 100644
--- a/0001-add-secure-compile-option-in-Makefile.patch
+++ b/0001-add-secure-compile-option-in-Makefile.patch
@@ -1,14 +1,13 @@
 diff --git a/CMakeLists.txt b/CMakeLists.txt
-index c62d7f9..b046e90 100644
+index f3d3433..2b9ffec 100644
 --- a/CMakeLists.txt
 +++ b/CMakeLists.txt
-@@ -344,6 +344,8 @@ set(LWS_LIBRARY_VERSION_PATCH ${CPACK_PACKAGE_VERSION_PATCH})
+@@ -353,6 +353,7 @@ set(LWS_LIBRARY_VERSION_PATCH ${CPACK_PACKAGE_VERSION_PATCH})
+ 
  set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${PROJECT_SOURCE_DIR}/cmake/")
-
  
 +set(CMAKE_C_FLAGS "-Wl,-z,now ${CMAKE_C_FLAGS}")
-+
+ 
  message(STATUS "CMAKE_TOOLCHAIN_FILE='${CMAKE_TOOLCHAIN_FILE}'")
  
- if(WIN32)
 
diff --git a/libwebsockets-4.0.1.tar.gz b/libwebsockets-4.0.20.tar.gz
similarity index 70%
rename from libwebsockets-4.0.1.tar.gz
rename to libwebsockets-4.0.20.tar.gz
index 1c7e2e4..df256e2 100644
Binary files a/libwebsockets-4.0.1.tar.gz and b/libwebsockets-4.0.20.tar.gz differ
diff --git a/libwebsockets.spec b/libwebsockets.spec
index 2521770..337ec02 100644
--- a/libwebsockets.spec
+++ b/libwebsockets.spec
@@ -1,5 +1,5 @@
 Name:           libwebsockets
-Version:        4.0.1
+Version:        4.0.20
 Release:        1
 Summary:        A lightweight C library for Websockets
 License:        LGPLv2 and Public Domain and BSD and MIT and zlib
@@ -70,7 +70,7 @@ cd build
 cd build
 %make_install
 
-cp -a %{_libdir}/libwebsockets.so.12* %{buildroot}%{_libdir}
+cp -a %{_libdir}/libwebsockets.so.16* %{buildroot}%{_libdir}
 
 %delete_la_and_a
 find %{buildroot} -name '*.cmake' -exec rm -f {} ';'
@@ -98,6 +98,12 @@ find %{buildroot} -name '*_static.pc' -exec rm -f {} ';'
 %doc changelog README.md READMEs/
 
 %changelog
+* Wed Jul 29 2020  <zhangxiaoyu58@huawei.com> - 4.0.20-1
+- Type:requirement
+- ID:NA
+- SUG:NA
+- DESC:update to 4.0.20
+
 * Tue Jun 9 2020 zhujunhao <zhujunhao8@huawei.com> - 4.0.1-1
 - Type:requirement
 - ID:NA