diff --git a/src/Docker.DotNet/DockerClient.cs b/src/Docker.DotNet/DockerClient.cs
index eca99747d..b5b466724 100644
--- a/src/Docker.DotNet/DockerClient.cs
+++ b/src/Docker.DotNet/DockerClient.cs
@@ -424,7 +424,7 @@ internal HttpRequestMessage PrepareRequest(HttpMethod method, string path, IQuer
 
             var request = new HttpRequestMessage(method, HttpUtility.BuildUri(_endpointBaseUri, this._requestedApiVersion, path, queryString));
 
-            request.Version = new Version(1, 11);
+            request.Version = new Version(1, 1);
 
             request.Headers.Add("User-Agent", UserAgent);
 
diff --git a/src/Docker.DotNet/Microsoft.Net.Http.Client/ManagedHandler.cs b/src/Docker.DotNet/Microsoft.Net.Http.Client/ManagedHandler.cs
index 9ab0b1b2e..48d2d2825 100644
--- a/src/Docker.DotNet/Microsoft.Net.Http.Client/ManagedHandler.cs
+++ b/src/Docker.DotNet/Microsoft.Net.Http.Client/ManagedHandler.cs
@@ -366,7 +366,7 @@ private async Task TunnelThroughProxyAsync(HttpRequestMessage request, Stream tr
             // CONNECT server.example.com:80 HTTP / 1.1
             // Host: server.example.com:80
             var connectRequest = new HttpRequestMessage();
-            connectRequest.Version = new Version(1, 11);
+            connectRequest.Version = new Version(1, 1);
 
             connectRequest.Headers.ProxyAuthorization = request.Headers.ProxyAuthorization;
             connectRequest.Method = new HttpMethod("CONNECT");