diff --git a/B9AnimationModules/B9AnimationModules.csproj b/B9AnimationModules/B9AnimationModules.csproj
index 7a911cd..2653ccd 100644
--- a/B9AnimationModules/B9AnimationModules.csproj
+++ b/B9AnimationModules/B9AnimationModules.csproj
@@ -9,7 +9,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>B9AnimationModules</RootNamespace>
     <AssemblyName>B9AnimationModules</AssemblyName>
-    <TargetFrameworkVersion>v3.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.7.1</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <TargetFrameworkProfile />
   </PropertyGroup>
@@ -37,6 +37,12 @@
     <Reference Include="UnityEngine">
       <Private>False</Private>
     </Reference>
+    <Reference Include="UnityEngine.CoreModule">
+      <Private>False</Private>
+    </Reference>
+    <Reference Include="UnityEngine.AnimationModule">
+      <Private>False</Private>
+    </Reference>
   </ItemGroup>
   <ItemGroup>
     <Compile Include="ModuleB9AnimateBase.cs" />
diff --git a/KSP_VERSION b/KSP_VERSION
index 661e7ae..a8fdfda 100644
--- a/KSP_VERSION
+++ b/KSP_VERSION
@@ -1 +1 @@
-1.7.3
+1.8.1