diff --git a/s/travis-build b/s/travis-build
index 414a70f80..f2ec7e487 100755
--- a/s/travis-build
+++ b/s/travis-build
@@ -12,6 +12,7 @@ fi
 
 set -e
 [ -z $BUILD ] && BUILD=Debug ; export BUILD
+cmake --version
 s/cmake-init
 s/build
 cd $ROOT
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index ef3bc782f..e12f8971f 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 2.6)
+cmake_minimum_required(VERSION 2.8.8)
 project (server C)
 
 include_directories (${CMAKE_CURRENT_SOURCE_DIR})