diff --git a/Gemfile.lock b/Gemfile.lock
index 5afdcd5..970858a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -125,14 +125,17 @@ GEM
     marcel (0.3.3)
       mimemagic (~> 0.3.2)
     method_source (0.9.0)
-    mimemagic (0.3.3)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.0)
-    mini_portile2 (2.3.0)
+    mini_portile2 (2.5.1)
     minitest (5.11.3)
     mustermann (1.0.2)
     nio4r (2.3.1)
-    nokogiri (1.8.2)
-      mini_portile2 (~> 2.3.0)
+    nokogiri (1.11.4)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
     orm_adapter (0.5.0)
     pg (1.0.0)
     pry (0.11.3)
@@ -142,6 +145,7 @@ GEM
       byebug (~> 10.0)
       pry (~> 0.10)
     public_suffix (3.0.2)
+    racc (1.5.2)
     rack (2.0.5)
     rack-protection (2.0.2)
       rack