diff --git a/README.md b/README.md
index 3b91aa4..2f81d16 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,6 @@ Vault.NET is an .NET API client for the interacting with [Vault](https://www.vau
 
 ```csharp
 using Vault;
-
 var vaultClient = new VaultClient();
 vaultClient.Token = "XXXXXX";
 ```
@@ -24,10 +23,8 @@ var data = new Dictionary<string, string>
     {"zip", "zap"}
 };
 await vaultClient.Secret.Write("secret/foo", data);
-
 var secret = await vaultClient.Secret.Read<Dictionary<string, string>>("secret/foo");
 Console.WriteLine(secret.Data["zip"]);
-
 // zap
 ```
 
@@ -35,7 +32,6 @@ Console.WriteLine(secret.Data["zip"]);
 
 ```csharp
 using Vault.Models.Secret.Pki;
-
 var testRole = new RolesRequest
 {
     AllowAnyDomain = true,
@@ -43,14 +39,12 @@ var testRole = new RolesRequest
     MaxTtl = "1h"
 };
 await vaultClient.Secret.Write("pki/roles/test", testRole);
-
 var certRequest = new IssueRequest
 {
     CommonName = "Test Cert"
 };
 var cert = await vaultClient.Secret.Write<IssueRequest, IssueResponse>("pki/issue/test", certRequest);
 Console.WriteLine(secret.Data.Certificate);
-
 // -----BEGIN CERTIFICATE-----
 // MII...
 ```
@@ -59,9 +53,7 @@ Console.WriteLine(secret.Data.Certificate);
 
 ```csharp
 using Vault.Models.Auth.UserPass;
-
 await vaultClient.Sys.EnableAuth("userpass", "userpass", "Userpass Mount");
-
 var usersRequest = new UsersRequest
 {
     Password = "password",
@@ -70,16 +62,13 @@ var usersRequest = new UsersRequest
     MaxTtl = "2h"
 };
 await vaultClient.Auth.Write("userpass/users/username", usersRequest);
-
 var loginRequest = new LoginRequest
 {
     Password = "password"
 };
 var loginResponse = await vaultClient.Auth.Write<LoginRequest, NoData>("userpass/login/username", loginRequest);
-
 // Set client token to authenticated token
 vaultClient.Token = loginResponse.Auth.ClientToken;
-
 // Proceed with authenticated requests
 ```
 
diff --git a/src/Vault/Vault.csproj b/src/Vault/Vault.csproj
index fbd91ef..e083b6b 100644
--- a/src/Vault/Vault.csproj
+++ b/src/Vault/Vault.csproj
@@ -28,6 +28,7 @@
   <ItemGroup Condition=" '$(TargetFramework)' == 'net45' ">
     <Reference Include="System.Web" />
     <Reference Include="System.Net.Http" />
+    <Reference Include="System.Net.Http.WebRequest" />    
   </ItemGroup>
 
 </Project>
diff --git a/src/Vault/VaultHttpClient.cs b/src/Vault/VaultHttpClient.cs
index 8fb7c98..665740c 100644
--- a/src/Vault/VaultHttpClient.cs
+++ b/src/Vault/VaultHttpClient.cs
@@ -1,7 +1,10 @@
 using System;
+using System.Linq;
 using System.Net;
 using System.Net.Http;
 using System.Net.Http.Headers;
+using System.Net.Security;
+using System.Security.Cryptography.X509Certificates;
 using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
@@ -11,7 +14,49 @@ namespace Vault
 {
     public class VaultHttpClient : IVaultHttpClient
     {
-        private static readonly HttpClient HttpClient = new HttpClient();
+        private static HttpClient HttpClientInitialization()
+        {
+            HttpClient httpClient = null;
+            
+            #if NET45
+                if (!string.IsNullOrEmpty(Vault.VaultOptions.Default.CertPath))
+                {
+                    WebRequestHandler requestHandler = new WebRequestHandler();
+                    requestHandler.ClientCertificateOptions = ClientCertificateOption.Manual;
+                    requestHandler.ClientCertificates.Add(new X509Certificate2(Vault.VaultOptions.Default.CertPath));
+                    httpClient = new HttpClient(requestHandler);
+                }
+                else
+                    httpClient = new HttpClient();
+            #else
+                if (!string.IsNullOrEmpty(Vault.VaultOptions.Default.CertPath))
+                {
+                    var handler = new HttpClientHandler();            
+                    handler.ServerCertificateCustomValidationCallback = (request, cert, chain, errors) =>
+                    {
+                        const SslPolicyErrors unforgivableErrors =
+                            SslPolicyErrors.RemoteCertificateNotAvailable |
+                            SslPolicyErrors.RemoteCertificateNameMismatch;
+
+                        if ((errors & unforgivableErrors) != 0)
+                        {
+                            return false;
+                        }
+
+                        X509Certificate2 remoteRoot = chain.ChainElements[chain.ChainElements.Count - 1].Certificate;
+                        return new X509Certificate2(Vault.VaultOptions.Default.CertPath).RawData.SequenceEqual(remoteRoot.RawData);
+                    };
+                    httpClient = new HttpClient(handler);
+                }
+                else
+                {
+                    httpClient = new HttpClient();
+                }
+            #endif
+            return httpClient;
+        }
+
+        private static readonly HttpClient HttpClient = HttpClientInitialization();
 
         public VaultHttpClient()
         {
diff --git a/src/Vault/VaultOptions.cs b/src/Vault/VaultOptions.cs
index a710217..74ce690 100644
--- a/src/Vault/VaultOptions.cs
+++ b/src/Vault/VaultOptions.cs
@@ -8,6 +8,7 @@ public class VaultOptions : IOptions<VaultOptions>
 
         public string Address { get; set; } = "https://localhost:8200";
         public string Token { get; set; }
+        public string CertPath { get; set; }        
 
         VaultOptions IOptions<VaultOptions>.Value => this;
     }