diff --git a/Gemfile.lock b/Gemfile.lock
index 4a2183db..336f9a42 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -160,9 +160,11 @@ GEM
       mimemagic (~> 0.3.2)
     maruku (0.7.3)
     method_source (1.0.0)
-    mimemagic (0.3.5)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.2)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.5.1)
     minitest (5.14.0)
     msgpack (1.3.3)
     multi_json (1.14.1)
@@ -170,8 +172,9 @@ GEM
     multipart-post (2.1.1)
     nested_form (0.3.2)
     nio4r (2.5.2)
-    nokogiri (1.10.9)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.11.5)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
     oauth2 (1.4.4)
       faraday (>= 0.8, < 2.0)
       jwt (>= 1.0, < 3.0)
@@ -202,6 +205,7 @@ GEM
     puma (3.12.4)
     pundit (2.1.0)
       activesupport (>= 3.0.0)
+    racc (1.5.2)
     rack (2.2.2)
     rack-pjax (1.1.0)
       nokogiri (~> 1.5)