diff --git a/src/api.rs b/src/api.rs
index 3f21fb7..6b1f7d5 100644
--- a/src/api.rs
+++ b/src/api.rs
@@ -340,7 +340,8 @@ where
         "Executing {} and returning authentication info",
         endpoint.path()
     );
-    let r: EndpointResult<()> = endpoint
+    // data: Option<T> - despite sample on the hashicorp site it is sometimes returned as data: null which works or data: {} which failes unless set to Value
+    let r: EndpointResult<serde_json::Value> = endpoint
         .with_middleware(client.middle())
         .exec(client.http())
         .await
diff --git a/src/client.rs b/src/client.rs
index 15051d5..95a96c5 100644
--- a/src/client.rs
+++ b/src/client.rs
@@ -82,9 +82,12 @@ impl VaultClient {
     /// Creates a new [VaultClient] using the given [VaultClientSettings].
     #[instrument(skip(settings), err)]
     pub fn new(settings: VaultClientSettings) -> Result<VaultClient, ClientError> {
-        #[cfg(not(feature = "rustls"))]
+        #[cfg(not(any(feature = "rustls", feature = "native-tls")))]
         let mut http_client = reqwest::ClientBuilder::new();
 
+        #[cfg(feature = "native-tls")]
+        let mut http_client = reqwest::ClientBuilder::new().use_native_tls();
+        
         #[cfg(feature = "rustls")]
         let mut http_client = reqwest::ClientBuilder::new().use_rustls_tls();