diff --git a/src/Core/Core.csproj b/src/Core/Core.csproj
index 0f13525eee..5aaf999dba 100644
--- a/src/Core/Core.csproj
+++ b/src/Core/Core.csproj
@@ -59,6 +59,7 @@
     <PackageReference Include="U2F.Core" Version="1.0.3" />
     <PackageReference Include="WindowsAzure.Storage" Version="8.1.4" />
     <PackageReference Include="Otp.NET" Version="1.0.1" />
+    <PackageReference Include="YubicoDotNetClient" Version="1.2.0" />
   </ItemGroup>
 
   <ItemGroup Condition=" '$(TargetFramework)' == 'net461' ">
@@ -66,7 +67,6 @@
     <Reference Include="System.Data" />
     <Reference Include="System" />
     <Reference Include="Microsoft.CSharp" />
-    <PackageReference Include="YubicoDotNetClient" Version="1.0.0" />
     <PackageReference Include="Microsoft.Azure.NotificationHubs" Version="1.0.8" />
   </ItemGroup>
 
diff --git a/src/Core/Identity/YubicoOtpTokenProvider.cs b/src/Core/Identity/YubicoOtpTokenProvider.cs
index 98156d6fab..286474e9c5 100644
--- a/src/Core/Identity/YubicoOtpTokenProvider.cs
+++ b/src/Core/Identity/YubicoOtpTokenProvider.cs
@@ -2,9 +2,7 @@
 using Microsoft.AspNetCore.Identity;
 using Bit.Core.Models.Table;
 using Bit.Core.Enums;
-#if NET461
 using YubicoDotNetClient;
-#endif
 using System.Linq;
 
 namespace Bit.Core.Identity
@@ -37,16 +35,16 @@ namespace Bit.Core.Identity
             return Task.FromResult<string>(null);
         }
 
-        public Task<bool> ValidateAsync(string purpose, string token, UserManager<User> manager, User user)
+        public async Task<bool> ValidateAsync(string purpose, string token, UserManager<User> manager, User user)
         {
             if(!user.Premium)
             {
-                return Task.FromResult(false);
+                return false;
             }
 
             if(string.IsNullOrWhiteSpace(token) || token.Length != 44)
             {
-                return Task.FromResult(false);
+                return false;
             }
 
             var id = token.Substring(0, 12);
@@ -54,17 +52,12 @@ namespace Bit.Core.Identity
             var provider = user.GetTwoFactorProvider(TwoFactorProviderType.YubiKey);
             if(!provider.MetaData.ContainsValue(id))
             {
-                return Task.FromResult(false);
+                return false;
             }
 
-
-#if NET461
             var client = new YubicoClient(_globalSettings.Yubico.ClientId, _globalSettings.Yubico.Key);
-            var response = client.Verify(token);
-            return Task.FromResult(response.Status == YubicoResponseStatus.Ok);
-#else
-            return Task.FromResult(false);
-#endif
+            var response = await client.VerifyAsync(token);
+            return response.Status == YubicoResponseStatus.Ok;
         }
     }
 }