diff --git a/Gemfile b/Gemfile
index 1b2f52f27..93520e49e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -10,7 +10,7 @@ gem 'faker',                      '2.11.0'
 gem 'will_paginate',              '3.3.0'
 gem 'bootstrap-will_paginate',    '1.0.0'
 gem 'bootstrap-sass',             '3.4.1'
-gem 'puma',                       '5.3.1'
+gem 'puma', '5.6.7'
 gem 'sass-rails',                 '6.0.0'
 gem 'webpacker',                  '5.4.0'
 gem 'turbolinks',                 '5.2.1'
diff --git a/Gemfile.lock b/Gemfile.lock
index 1e7b25622..02cc86270 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -148,6 +148,7 @@ GEM
     method_source (1.0.0)
     mini_magick (4.9.5)
     mini_mime (1.0.3)
+    mini_portile2 (2.6.1)
     minitest (5.11.3)
     minitest-reporters (1.3.8)
       ansi
@@ -156,7 +157,10 @@ GEM
       ruby-progressbar
     msgpack (1.4.2)
     nenv (0.3.0)
-    nio4r (2.5.8)
+    nio4r (2.5.9)
+    nokogiri (1.12.4)
+      mini_portile2 (~> 2.6.1)
+      racc (~> 1.4)
     nokogiri (1.12.4-x86_64-darwin)
       racc (~> 1.4)
     notiffany (0.1.3)
@@ -167,7 +171,7 @@ GEM
       coderay (~> 1.1)
       method_source (~> 1.0)
     public_suffix (4.0.6)
-    puma (5.3.1)
+    puma (5.6.7)
       nio4r (~> 2.0)
     racc (1.5.2)
     rack (2.2.3)
@@ -270,6 +274,7 @@ GEM
     zeitwerk (2.4.2)
 
 PLATFORMS
+  ruby
   x86_64-darwin-19
 
 DEPENDENCIES
@@ -291,7 +296,7 @@ DEPENDENCIES
   minitest (= 5.11.3)
   minitest-reporters (= 1.3.8)
   pg (= 1.2.3)
-  puma (= 5.3.1)
+  puma (= 5.6.7)
   rack-mini-profiler (= 2.3.1)
   rails (= 6.1.3.2)
   rails-controller-testing (= 1.0.5)
@@ -306,4 +311,4 @@ DEPENDENCIES
   will_paginate (= 3.3.0)
 
 BUNDLED WITH
-   2.2.17
+   2.1.4