diff --git a/Gemfile.lock b/Gemfile.lock
index 1d0d48a29..c53016ba0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -44,8 +44,8 @@ GEM
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.6.0)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     aes_key_wrap (1.0.1)
     annotate (2.7.4)
       activerecord (>= 3.2, < 6.0)
@@ -223,7 +223,9 @@ 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 (1.0.1)
     mini_portile2 (2.4.0)
     minitest (5.11.3)
@@ -307,7 +309,7 @@ GEM
       activerecord (>= 3.0)
       i18n (>= 0.5.0)
       railties (>= 3.0.0)
-    public_suffix (3.0.3)
+    public_suffix (5.0.0)
     puma (3.12.1)
     pundit (2.0.1)
       activesupport (>= 3.0.0)