diff --git a/src/WireMock.Net.Abstractions/Admin/Settings/SettingsModel.cs b/src/WireMock.Net.Abstractions/Admin/Settings/SettingsModel.cs
index 2b421d03e..2cda87b9e 100644
--- a/src/WireMock.Net.Abstractions/Admin/Settings/SettingsModel.cs
+++ b/src/WireMock.Net.Abstractions/Admin/Settings/SettingsModel.cs
@@ -29,5 +29,10 @@ public class SettingsModel
         /// Gets or sets wether to allow a body for all HTTP methods.
         /// </summary>
         public bool? AllowBodyForAllHttpMethods { get; set; }
+
+        /// <summary>
+        /// Gets or sets wether to handle all requests synchronously.
+        /// </summary>
+        public bool? HandleRequestsSynchronously { get; set; }
     }
 }
\ No newline at end of file
diff --git a/src/WireMock.Net/Owin/IWireMockMiddlewareOptions.cs b/src/WireMock.Net/Owin/IWireMockMiddlewareOptions.cs
index f1bd275e5..44f900e2f 100644
--- a/src/WireMock.Net/Owin/IWireMockMiddlewareOptions.cs
+++ b/src/WireMock.Net/Owin/IWireMockMiddlewareOptions.cs
@@ -45,5 +45,7 @@ internal interface IWireMockMiddlewareOptions
         bool? DisableJsonBodyParsing { get; set; }
 
         bool? DisableRequestBodyDecompressing { get; set; }
+
+        bool? HandleRequestsSynchronously { get; set; }
     }
 }
\ No newline at end of file
diff --git a/src/WireMock.Net/Owin/WireMockMiddleware.cs b/src/WireMock.Net/Owin/WireMockMiddleware.cs
index cfc708cff..2e02eba17 100644
--- a/src/WireMock.Net/Owin/WireMockMiddleware.cs
+++ b/src/WireMock.Net/Owin/WireMockMiddleware.cs
@@ -25,6 +25,7 @@ namespace WireMock.Owin
 {
     internal class WireMockMiddleware : OwinMiddleware
     {
+        private readonly object _lock = new object();
         private static readonly Task CompletedTask = Task.FromResult(false);
         private readonly IWireMockMiddlewareOptions _options;
         private readonly IOwinRequestMapper _requestMapper;
@@ -65,7 +66,17 @@ public override Task Invoke(IContext ctx)
         public Task Invoke(IContext ctx)
 #endif
         {
-            return InvokeInternal(ctx);
+            if (_options.HandleRequestsSynchronously.GetValueOrDefault(true))
+            {
+                lock (_lock)
+                {
+                    return InvokeInternal(ctx);
+                }
+            }
+            else
+            {
+                return InvokeInternal(ctx);
+            }
         }
 
         private async Task InvokeInternal(IContext ctx)
diff --git a/src/WireMock.Net/Owin/WireMockMiddlewareOptions.cs b/src/WireMock.Net/Owin/WireMockMiddlewareOptions.cs
index 37bbac540..c213b4fd4 100644
--- a/src/WireMock.Net/Owin/WireMockMiddlewareOptions.cs
+++ b/src/WireMock.Net/Owin/WireMockMiddlewareOptions.cs
@@ -51,5 +51,8 @@ internal class WireMockMiddlewareOptions : IWireMockMiddlewareOptions
 
         /// <inheritdoc cref="IWireMockMiddlewareOptions.DisableRequestBodyDecompressing"/>
         public bool? DisableRequestBodyDecompressing { get; set; }
+
+        /// <inheritdoc cref="IWireMockMiddlewareOptions.HandleRequestsSynchronously"/>
+        public bool? HandleRequestsSynchronously { get; set; }
     }
 }
\ No newline at end of file
diff --git a/src/WireMock.Net/Server/FluentMockServer.cs b/src/WireMock.Net/Server/FluentMockServer.cs
index 2e2def00b..df5deef39 100644
--- a/src/WireMock.Net/Server/FluentMockServer.cs
+++ b/src/WireMock.Net/Server/FluentMockServer.cs
@@ -1,13 +1,13 @@
 using System;
-using WireMock.Settings;
-
-namespace WireMock.Server
-{
-    [Obsolete("Use WireMockServer. This will removed in next version (1.3.x)")]
-    public class FluentMockServer : WireMockServer
-    {
-        public FluentMockServer(IFluentMockServerSettings settings) : base((IWireMockServerSettings) settings)
-        {
-        }
-    }
+using WireMock.Settings;
+
+namespace WireMock.Server
+{
+    [Obsolete("Use WireMockServer. This will removed in next version (1.3.x)")]
+    public class FluentMockServer : WireMockServer
+    {
+        public FluentMockServer(IFluentMockServerSettings settings) : base((IWireMockServerSettings) settings)
+        {
+        }
+    }
 }
\ No newline at end of file
diff --git a/src/WireMock.Net/Server/WireMockServer.Admin.cs b/src/WireMock.Net/Server/WireMockServer.Admin.cs
index 85d832d5f..3432da978 100644
--- a/src/WireMock.Net/Server/WireMockServer.Admin.cs
+++ b/src/WireMock.Net/Server/WireMockServer.Admin.cs
@@ -344,7 +344,8 @@ private ResponseMessage SettingsGet(RequestMessage requestMessage)
                 MaxRequestLogCount = _options.MaxRequestLogCount,
                 RequestLogExpirationDuration = _options.RequestLogExpirationDuration,
                 GlobalProcessingDelay = (int?)_options.RequestProcessingDelay?.TotalMilliseconds,
-                AllowBodyForAllHttpMethods = _options.AllowBodyForAllHttpMethods
+                AllowBodyForAllHttpMethods = _options.AllowBodyForAllHttpMethods,
+                HandleRequestsSynchronously = _options.HandleRequestsSynchronously
             };
 
             return ToJson(model);
@@ -371,6 +372,11 @@ private ResponseMessage SettingsUpdate(RequestMessage requestMessage)
                 _options.AllowBodyForAllHttpMethods = settings.AllowBodyForAllHttpMethods.Value;
             }
 
+            if (settings.HandleRequestsSynchronously != null)
+            {
+                _options.HandleRequestsSynchronously = settings.HandleRequestsSynchronously.Value;
+            }
+
             return ResponseMessageBuilder.Create("Settings updated");
         }
         #endregion Settings
diff --git a/src/WireMock.Net/Server/WireMockServer.cs b/src/WireMock.Net/Server/WireMockServer.cs
index 3baeeac17..ffb878341 100644
--- a/src/WireMock.Net/Server/WireMockServer.cs
+++ b/src/WireMock.Net/Server/WireMockServer.cs
@@ -217,6 +217,7 @@ protected WireMockServer(IWireMockServerSettings settings)
             _options.PostWireMockMiddlewareInit = _settings.PostWireMockMiddlewareInit;
             _options.Logger = _settings.Logger;
             _options.DisableJsonBodyParsing = _settings.DisableJsonBodyParsing;
+            _options.HandleRequestsSynchronously = settings.HandleRequestsSynchronously;
 
             _matcherMapper = new MatcherMapper(_settings);
             _mappingConverter = new MappingConverter(_matcherMapper);
diff --git a/src/WireMock.Net/Settings/IWireMockServerSettings.cs b/src/WireMock.Net/Settings/IWireMockServerSettings.cs
index 843b8729e..0d3ffd884 100644
--- a/src/WireMock.Net/Settings/IWireMockServerSettings.cs
+++ b/src/WireMock.Net/Settings/IWireMockServerSettings.cs
@@ -143,7 +143,7 @@ public interface IWireMockServerSettings
         /// - false : also null, 0, empty or invalid HttpStatus codes are allowed.
         /// - true  : only codes defined in <see cref="System.Net.HttpStatusCode"/> are allowed.
         /// </summary>
-        /// [PublicAPI]
+        [PublicAPI]
         bool? AllowOnlyDefinedHttpStatusCodeInResponse { get; set; }
 
         /// <summary>
@@ -157,5 +157,11 @@ public interface IWireMockServerSettings
         /// </summary>
         [PublicAPI]
         bool? DisableRequestBodyDecompressing { get; set; }
+
+        /// <summary>
+        /// Handle all requests synchronously. (default set to false).
+        /// </summary>
+        [PublicAPI]
+        bool? HandleRequestsSynchronously { get; set; }
     }
 }
\ No newline at end of file
diff --git a/src/WireMock.Net/Settings/WireMockServerSettings.cs b/src/WireMock.Net/Settings/WireMockServerSettings.cs
index f7c327362..02a60d6a3 100644
--- a/src/WireMock.Net/Settings/WireMockServerSettings.cs
+++ b/src/WireMock.Net/Settings/WireMockServerSettings.cs
@@ -113,5 +113,9 @@ public class WireMockServerSettings : IWireMockServerSettings
         /// <inheritdoc cref="IWireMockServerSettings.DisableRequestBodyDecompressing"/>
         [PublicAPI]
         public bool? DisableRequestBodyDecompressing { get; set; }
+
+        /// <inheritdoc cref="IWireMockServerSettings.HandleRequestsSynchronously"/>
+        [PublicAPI]
+        public bool? HandleRequestsSynchronously { get; set; }
     }
 }
\ No newline at end of file
diff --git a/src/WireMock.Net/Settings/WireMockServerSettingsParser.cs b/src/WireMock.Net/Settings/WireMockServerSettingsParser.cs
index 62aa48ce3..366f11044 100644
--- a/src/WireMock.Net/Settings/WireMockServerSettingsParser.cs
+++ b/src/WireMock.Net/Settings/WireMockServerSettingsParser.cs
@@ -36,7 +36,8 @@ public static IWireMockServerSettings ParseArguments([NotNull] string[] args, [C
                 AllowCSharpCodeMatcher = parser.GetBoolValue("AllowCSharpCodeMatcher"),
                 AllowBodyForAllHttpMethods = parser.GetBoolValue("AllowBodyForAllHttpMethods"),
                 AllowOnlyDefinedHttpStatusCodeInResponse = parser.GetBoolValue("AllowOnlyDefinedHttpStatusCodeInResponse"),
-                DisableJsonBodyParsing = parser.GetBoolValue("DisableJsonBodyParsing")
+                DisableJsonBodyParsing = parser.GetBoolValue("DisableJsonBodyParsing"),
+                HandleRequestsSynchronously = parser.GetBoolValue("HandleRequestsSynchronously")
             };
 
             if (logger != null)