diff --git a/.travis.yml b/.travis.yml
index 8702682b..c2fc422e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -32,6 +32,7 @@ before_install:
   - echo "TRAVIS_OS_NAME=${TRAVIS_OS_NAME}"
   - export DISPLAY=:99.0
   - sudo apt-get install -y libgl1-mesa-glx libgl1-mesa-dev
+  - cmake --version
 
 install:
   - bash ${TRAVIS_BUILD_DIR}/ci/build-install-tools.sh #> /dev/null
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 6e8a5347..16b8e54f 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,6 +1,6 @@
 # Author: Kang Lin (kl222@126.com)
 
-cmake_minimum_required(VERSION 3.2)
+cmake_minimum_required(VERSION 2.8.12)
 
 if(POLICY CMP0100)
     cmake_policy(SET CMP0100 NEW)