Gemfile.lock in dotenv-vault-rails-0.3.3 vs Gemfile.lock in dotenv-vault-rails-0.4.0

@@ -1,13 +1,14 @@
 PATH
   remote: .
   specs:
-    dotenv-vault (0.3.3)
+    dotenv-vault (0.4.0)
       dotenv
-    dotenv-vault-rails (0.3.3)
+      lockbox
+    dotenv-vault-rails (0.4.0)
       dotenv-rails
-      dotenv-vault (= 0.3.3)
+      dotenv-vault (= 0.4.0)
 
 GEM
   remote: https://rubygems.org/
   specs:
     actionpack (7.0.4)
@@ -38,9 +39,10 @@
       dotenv (= 2.8.1)
       railties (>= 3.2)
     erubi (1.11.0)
     i18n (1.12.0)
       concurrent-ruby (~> 1.0)
+    lockbox (1.0.0)
     loofah (2.19.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     method_source (1.0.0)
     mini_portile2 (2.8.0)