diff --git a/Gemfile.lock b/Gemfile.lock
index dc159de4..36ff09bd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -139,9 +139,11 @@ GEM
     mime-types (3.2.2)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2018.0812)
-    mimemagic (0.3.3)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.1)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.5.1)
     minitest (5.11.3)
     minitest-reporters (1.1.19)
       ansi
@@ -153,8 +155,9 @@ GEM
     multipart-post (2.0.0)
     nenv (0.3.0)
     nio4r (2.3.1)
-    nokogiri (1.9.1)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.11.4)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
     notiffany (0.1.1)
       nenv (~> 0.1)
       shellany (~> 0.0)
@@ -168,6 +171,7 @@ GEM
       method_source (~> 0.9.0)
     public_suffix (3.0.3)
     puma (3.12.0)
+    racc (1.5.2)
     rack (2.0.6)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)