diff --git a/Gemfile.lock b/Gemfile.lock
index eff6f10..f0a8a07 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -5,7 +5,8 @@ GEM
     gitlab (4.4.0)
       httparty (>= 0.14.0)
       terminal-table (>= 1.5.1)
-    httparty (0.16.2)
+    httparty (0.21.0)
+      mini_mime (>= 1.0.0)
       multi_xml (>= 0.5.2)
     mail (2.7.0)
       mini_mime (>= 0.1.1)