diff --git a/Gemfile b/Gemfile
index a8f07f25..4973b9fa 100644
--- a/Gemfile
+++ b/Gemfile
@@ -17,7 +17,7 @@ gem 'puma', '~> 4.3'
 
 # respond_to methods have been extracted to the responders gem
 # http://edgeguides.rubyonrails.org/upgrading_ruby_on_rails.html#responders
-gem 'responders', '~> 2.0'
+gem 'responders', '~> 3.0'
 
 # as supported databases
 gem 'mysql2'
diff --git a/Gemfile.lock b/Gemfile.lock
index 73e60f60..ca88c40b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -292,7 +292,7 @@ GEM
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
       ruby_dep (~> 1.2)
-    loofah (2.10.0)
+    loofah (2.11.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     lumberjack (1.0.12)
@@ -311,7 +311,7 @@ GEM
       rake
     mini_magick (4.11.0)
     mini_mime (1.1.0)
-    mini_portile2 (2.5.3)
+    mini_portile2 (2.6.1)
     minitest (5.14.4)
     momentjs-rails (2.20.1)
       railties (>= 3.1)
@@ -331,8 +331,8 @@ GEM
     nenv (0.3.0)
     netrc (0.11.0)
     nio4r (2.5.7)
-    nokogiri (1.11.7)
-      mini_portile2 (~> 2.5.0)
+    nokogiri (1.12.3)
+      mini_portile2 (~> 2.6.1)
       racc (~> 1.4)
     notiffany (0.1.1)
       nenv (~> 0.1)
@@ -471,9 +471,9 @@ GEM
     regexp_parser (2.1.1)
     request_store (1.4.1)
       rack (>= 1.4)
-    responders (2.4.1)
-      actionpack (>= 4.2.0, < 6.0)
-      railties (>= 4.2.0, < 6.0)
+    responders (3.0.1)
+      actionpack (>= 5.0)
+      railties (>= 5.0)
     rest-client (2.0.2)
       http-cookie (>= 1.0.2, < 2.0)
       mime-types (>= 1.16, < 4.0)
@@ -720,7 +720,7 @@ DEPENDENCIES
   rails-i18n
   recaptcha
   redcarpet
-  responders (~> 2.0)
+  responders (~> 3.0)
   rolify
   rqrcode
   rspec-activemodel-mocks