diff --git a/Gemfile.lock b/Gemfile.lock
index 6c4aa0f..70d5f48 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -302,10 +302,12 @@ GEM
     mime-types (3.2.2)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2019.0331)
-    mimemagic (0.3.3)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_magick (4.9.5)
     mini_mime (1.0.2)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.5.1)
     minitest (5.11.3)
     mirador_rails (0.6.0)
       font-awesome-rails
@@ -321,8 +323,9 @@ GEM
     net-http-persistent (2.9.4)
     netrc (0.11.0)
     nio4r (2.4.0)
-    nokogiri (1.10.4)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.11.4)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
     nouislider-rails (8.2.1)
       railties (>= 3.1)
     oauth2 (1.4.1)
@@ -356,6 +359,7 @@ GEM
       gio2 (= 3.3.7)
     public_suffix (3.1.1)
     puma (3.12.1)
+    racc (1.5.2)
     rack (2.0.7)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)