diff --git a/Gemfile.lock b/Gemfile.lock
index 76c0a5b..220f178 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -110,7 +110,9 @@ GEM
     marcel (0.3.3)
       mimemagic (~> 0.3.2)
     method_source (0.9.2)
-    mimemagic (0.3.3)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.2)
     mini_portile2 (2.4.0)
     minitest (5.12.2)
@@ -178,7 +180,7 @@ GEM
     sqlite3 (1.4.1)
     thor (0.20.3)
     thread_safe (0.3.6)
-    tzinfo (1.2.5)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     websocket-driver (0.7.1)
       websocket-extensions (>= 0.1.0)