diff --git a/.travis.yml b/.travis.yml
index 258b4ba..208b133 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,12 +1,12 @@
 # use the new container-based Travis infrastructure
 os: linux
 dist: trusty
-sudo: false  
+sudo: false
 
 language: csharp
 solution: MonoDevelop.WakaTime.sln
 mono:
-  - 3.12.0
+  - 4.8.0
 
 install:
   - sudo apt-get install -yq monodevelop # Install MonoDevelop for mdtool utility
diff --git a/src/MonoDevelop.WakaTime.csproj b/src/MonoDevelop.WakaTime.csproj
index 04d63a0..ece33dc 100644
--- a/src/MonoDevelop.WakaTime.csproj
+++ b/src/MonoDevelop.WakaTime.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>