diff --git a/Gemfile.lock b/Gemfile.lock
index 544dcc3..4ed8fd6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -130,7 +130,7 @@ GEM
       guard (~> 2.8)
       guard-compat (~> 1.0)
       multi_json (~> 1.8)
-    guard-rspec (4.6.5)
+    guard-rspec (4.7.0)
       guard (~> 2.1)
       guard-compat (~> 1.1)
       rspec (>= 2.99.0, < 4.0)
@@ -173,7 +173,7 @@ GEM
     method_source (0.8.2)
     mime-types (3.0)
       mime-types-data (~> 3.2015)
-    mime-types-data (3.2016.0221)
+    mime-types-data (3.2016.0521)
     mini_portile2 (2.0.0)
     minitest (5.9.0)
     multi_json (1.12.1)