diff --git a/.travis.yml b/.travis.yml
index 85bc44ebb4..762dedf67a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,13 +5,13 @@ matrix:
     - os: osx
       env: BUILD_TARGET=mac_cmake
       language: cpp
-      osx_image: xcode11
+      osx_image: xcode11.6
       sudo: required
     # iOS_cmake
     - os: osx
       env: BUILD_TARGET=ios_cmake
       language: cpp
-      osx_image: xcode11
+      osx_image: xcode11.6
       sudo: required
     # android cmake
     - os: linux
diff --git a/external/config.json b/external/config.json
index 13f928435a..0f35bae4c5 100644
--- a/external/config.json
+++ b/external/config.json
@@ -1,5 +1,5 @@
 {
-    "version": "v65",
+    "version": "v66",
     "zip_file_size": "107642814",
     "repo_name": "engine-x-3rd",
     "repo_parent": "https://github.com/c4games/",