diff --git a/src/OpenTK.GLWidget/OpenTK.GLWidget.csproj b/src/OpenTK.GLWidget/OpenTK.GLWidget.csproj
index 712534a6..6e771eba 100644
--- a/src/OpenTK.GLWidget/OpenTK.GLWidget.csproj
+++ b/src/OpenTK.GLWidget/OpenTK.GLWidget.csproj
@@ -39,7 +39,7 @@
     <IsWebBootstrapper>false</IsWebBootstrapper>
     <UseApplicationTrust>false</UseApplicationTrust>
     <BootstrapperEnabled>true</BootstrapperEnabled>
-    <TargetFrameworkVersion>v2.0</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
     <TargetFrameworkProfile />
     <Deterministic>true</Deterministic>
     <LangVersion>6</LangVersion>