diff --git a/src/AddIn/AddIn.cs b/src/AddIn/AddIn.cs
index 5486103..b8bfd21 100644
--- a/src/AddIn/AddIn.cs
+++ b/src/AddIn/AddIn.cs
@@ -1,6 +1,5 @@
 using ExcelDna.Integration;
 using ExcelDna.IntelliSense;
-using ExcelDna.Registration;
 using Microsoft.Office.Interop.Excel;
 using System.Net.Http;
 using System.Runtime.Caching;
@@ -16,7 +15,6 @@ namespace RhSolutions
         {
             Excel = (Application)ExcelDnaUtil.Application;
             httpClient = new HttpClient();
-            RegisterFunctions();
             IntelliSenseServer.Install();
             RegistryUtil.Initialize();
             EventsUtil.Initialize();
@@ -28,12 +26,5 @@ namespace RhSolutions
             RegistryUtil.Uninitialize();
             EventsUtil.Uninitialize();
         }
-
-        void RegisterFunctions()
-        {
-            ExcelRegistration.GetExcelFunctions()
-                             .ProcessAsyncRegistrations(nativeAsyncIfAvailable: false)
-                             .RegisterFunctions();
-        }
     }
 }
diff --git a/src/RhSolutions.csproj b/src/RhSolutions.csproj
index e3f3359..a5e4612 100644
--- a/src/RhSolutions.csproj
+++ b/src/RhSolutions.csproj
@@ -41,9 +41,6 @@
     <Reference Include="ExcelDna.IntelliSense, Version=1.1.0.0, Culture=neutral, PublicKeyToken=f225e9659857edbe, processorArchitecture=MSIL">
       <HintPath>..\packages\ExcelDna.IntelliSense.1.6.0\lib\net452\ExcelDna.IntelliSense.dll</HintPath>
     </Reference>
-    <Reference Include="ExcelDna.Registration, Version=1.1.0.0, Culture=neutral, PublicKeyToken=f225e9659857edbe, processorArchitecture=MSIL">
-      <HintPath>..\packages\ExcelDna.Registration.1.6.0\lib\net452\ExcelDna.Registration.dll</HintPath>
-    </Reference>
     <Reference Include="Microsoft.Office.Interop.Excel, Version=15.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c, processorArchitecture=MSIL">
       <HintPath>..\packages\ExcelDna.Interop.15.0.0\lib\net452\Microsoft.Office.Interop.Excel.dll</HintPath>
       <EmbedInteropTypes>True</EmbedInteropTypes>
diff --git a/src/packages.config b/src/packages.config
index 8a005ce..74be17f 100644
--- a/src/packages.config
+++ b/src/packages.config
@@ -4,7 +4,6 @@
   <package id="ExcelDna.Integration" version="1.6.0" targetFramework="net48" />
   <package id="ExcelDna.IntelliSense" version="1.6.0" targetFramework="net48" />
   <package id="ExcelDna.Interop" version="15.0.0" targetFramework="net48" />
-  <package id="ExcelDna.Registration" version="1.6.0" targetFramework="net48" />
   <package id="Microsoft.CSharp" version="4.7.0" targetFramework="net48" />
   <package id="Newtonsoft.Json" version="13.0.2" targetFramework="net48" />
 </packages>
\ No newline at end of file