diff --git a/src/vault/client/http.clj b/src/vault/client/http.clj
index 8252354..8542a31 100644
--- a/src/vault/client/http.clj
+++ b/src/vault/client/http.clj
@@ -164,6 +164,22 @@
            :as :json})))))
 
 
+(defn- authenticate-ldap!
+  "Updates the token ref by making a request to authenticate with a username
+  and password, to be authenticated against an LDAP backend."
+  [client credentials]
+  (let [{:keys [username password]} credentials]
+    (api-auth!
+      (str "LDAP user " username)
+      (:auth client)
+      (do-api-request :post (str (:api-url client) "/v1/auth/ldap/login/" username)
+        (merge
+          (:http-opts client)
+          {:form-params {:password password}
+           :content-type :json
+           :accept :json
+           :as :json})))))
+
 
 ;; ## Timer Logic
 
@@ -278,6 +294,7 @@
       :token (authenticate-token! this credentials)
       :app-id (authenticate-app! this credentials)
       :userpass (authenticate-userpass! this credentials)
+      :ldap (authenticate-ldap! this credentials)
       ; Unknown type
       (throw (ex-info (str "Unsupported auth-type " (pr-str auth-type))
                       {:auth-type auth-type})))
diff --git a/src/vault/core.clj b/src/vault/core.clj
index da8ef94..dad3743 100644
--- a/src/vault/core.clj
+++ b/src/vault/core.clj
@@ -16,6 +16,7 @@
 
     - `:token \"...\"`
     - `:userpass {:username \"user\", :password \"hunter2\"}`
+    - `:ldap {:username \"LDAP username\", :password \"hunter2\"}`
     - `:app-id {:app \"foo-service-dev\", :user \"...\"}`")
 
   (status