diff --git a/src/AddIn/AddIn.cs b/src/AddIn/AddIn.cs
index b747264..2aa71c7 100644
--- a/src/AddIn/AddIn.cs
+++ b/src/AddIn/AddIn.cs
@@ -2,6 +2,7 @@
 using ExcelDna.IntelliSense;
 using Microsoft.Office.Interop.Excel;
 using RhSolutions.Services;
+using System.Net;
 using System.Net.Http;
 
 namespace RhSolutions.AddIn
@@ -18,6 +19,11 @@ namespace RhSolutions.AddIn
             IntelliSenseServer.Install();
             RegistryUtil.Initialize();
             EventsUtil.Initialize();
+
+            ServicePointManager.SecurityProtocol =
+                SecurityProtocolType.Tls12 |
+                SecurityProtocolType.Tls11 |
+                SecurityProtocolType.Tls;
         }
 
         public void AutoClose()
diff --git a/src/RhSolutions-AddIn.dna b/src/RhSolutions-AddIn.dna
index eecb271..a75d6e1 100644
--- a/src/RhSolutions-AddIn.dna
+++ b/src/RhSolutions-AddIn.dna
@@ -1,6 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <DnaLibrary Name="RhSolutions Add-In" RuntimeVersion="v4.0" xmlns="http://schemas.excel-dna.net/addin/2020/07/dnalibrary">
   <ExternalLibrary Path="RhSolutions.AddIn.dll" ExplicitExports="false" LoadFromBytes="true" Pack="true" IncludePdb="false" />
+	<Reference Path="ExcelDna.IntelliSense.dll" Pack="true" />
+	<Reference Path="Newtonsoft.Json.dll" Pack="true" />
 
   <!--
        The RuntimeVersion attribute above allows only the following setting:
diff --git a/src/Services/RhDatabaseClient.cs b/src/Services/RhDatabaseClient.cs
index d71a6ba..73bce3d 100644
--- a/src/Services/RhDatabaseClient.cs
+++ b/src/Services/RhDatabaseClient.cs
@@ -16,11 +16,6 @@ namespace RhSolutions.Services
         {
             string request = @"https://rh.cebotari.ru/api/search?query=" + line;
 
-            ServicePointManager.SecurityProtocol =
-                SecurityProtocolType.Tls12 |
-                SecurityProtocolType.Tls11 |
-                SecurityProtocolType.Tls;
-
             string response = await httpClient.GetStringAsync(request);
 
             var products = JsonConvert.DeserializeObject<IEnumerable<DbProduct>>(response);