diff --git a/CMakeLists.txt b/CMakeLists.txt
index a04a11c..94b1373 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,7 +1,8 @@
-cmake_minimum_required(VERSION 2.8)
+cmake_minimum_required(VERSION 3.3)
 
 set(CMAKE_BUILD_TYPE Release)
-project (sparsehash)
+project (sparsehash
+         VERSION 2.11.1)
 
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -Wall")
 if(NOT MSVC)
diff --git a/appveyor.yml b/appveyor.yml
index a6272ab..a3f1836 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,5 +1,5 @@
 
-version: 0.1.{build}
+version: 2.11.1.{build}
 
 branches:
   only: