diff --git a/backend/project.clj b/backend/project.clj
index 49538471d..b9304259d 100644
--- a/backend/project.clj
+++ b/backend/project.clj
@@ -28,8 +28,8 @@
                   :exclusions [org.clojure/tools.reader]]
                  [niwinz/migrante "0.1.0"]
 
-                 [buddy/buddy-sign "1.4.0"]
-                 [buddy/buddy-hashers "1.2.0"]
+                 [buddy/buddy-sign "2.2.0"]
+                 [buddy/buddy-hashers "1.3.0"]
 
                  [org.xerial.snappy/snappy-java "1.1.2.6"]
                  [com.github.spullara.mustache.java/compiler "0.9.4"]
diff --git a/backend/src/uxbox/config.clj b/backend/src/uxbox/config.clj
index 2e65dfbb1..c49969108 100644
--- a/backend/src/uxbox/config.clj
+++ b/backend/src/uxbox/config.clj
@@ -77,7 +77,7 @@
     (when-not secret
       (ex/raise :code ::missing-secret-key
                 :message "Missing `:secret` key in config."))
-    (hash/blake2b-256 secret)))
+    (hash/blake2b-512 secret)))
 
 (defstate secret
   :start (initialize-secret config))
diff --git a/backend/src/uxbox/services/auth.clj b/backend/src/uxbox/services/auth.clj
index 69d1c60ea..67defb8f6 100644
--- a/backend/src/uxbox/services/auth.clj
+++ b/backend/src/uxbox/services/auth.clj
@@ -10,6 +10,7 @@
             [buddy.hashers :as hashers]
             [buddy.sign.jwt :as jwt]
             [buddy.core.hash :as hash]
+            [clj-ldap.client :as ldap]
             [uxbox.config :as cfg]
             [uxbox.util.spec :as us]
             [uxbox.db :as db]
diff --git a/backend/src/uxbox/util/token.clj b/backend/src/uxbox/util/token.clj
index 605c9af1f..5fb993729 100644
--- a/backend/src/uxbox/util/token.clj
+++ b/backend/src/uxbox/util/token.clj
@@ -17,7 +17,7 @@
   using urlsafe variant of base64."
   []
   (-> (nonce/random-bytes 1024)
-      (hash/blake2b-256)
+      (hash/blake2b-512)
       (b64/encode true)
       (codecs/bytes->str)))