diff --git a/.appveyor.yml b/.appveyor.yml
index b585531d..24db30db 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -1,5 +1,5 @@
 version: '{build}'
-os: Visual Studio 2015
+os: Previous Visual Studio 2015
 
 configuration:
 - Debug
diff --git a/README.md b/README.md
index 1d0beb69..781ab941 100644
--- a/README.md
+++ b/README.md
@@ -46,7 +46,7 @@ for(auto row : wb2["sheet2"].rows())
 ```
 
 ## Building
-xlnt uses continous integration and passes all 300+ tests in GCC 4.9, VS2015, and Clang (using Apple LLVM 7.0).
+xlnt uses continous integration and passes all 200+ tests in GCC 4.9, GCC5, VS2015, and Clang (using Apple LLVM 7.0).
 
 Build configurations for Visual Studio 2015, GNU Make, and Xcode can be created using [cmake](https://cmake.org/) and the cmake scripts in the project's cmake directory. A full list of cmake generators can be found [here](https://cmake.org/cmake/help/v3.0/manual/cmake-generators.7.html). A basic build would look like (starting in the root xlnt directory):