diff --git a/Gemfile b/Gemfile
index e833954..6007d9e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -13,7 +13,7 @@ gem 'jbuilder', '~> 2.7'
 gem 'kaminari'
 gem 'paper_trail'
 gem 'pg'
-gem 'puma', '~> 5.0'
+gem 'puma', '~> 5.5'
 gem 'pundit'
 gem 'rails', '~> 6.1.4'
 gem 'ransack'
diff --git a/Gemfile.lock b/Gemfile.lock
index 3bf9b46..39a02cb 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -132,7 +132,7 @@ GEM
     mini_mime (1.1.0)
     minitest (5.14.4)
     msgpack (1.4.2)
-    nio4r (2.5.7)
+    nio4r (2.5.8)
     nokogiri (1.11.7-x86_64-linux)
       racc (~> 1.4)
     orm_adapter (0.5.0)
@@ -144,7 +144,7 @@ GEM
       ast (~> 2.4.1)
     pg (1.2.3)
     public_suffix (4.0.6)
-    puma (5.3.2)
+    puma (5.5.1)
       nio4r (~> 2.0)
     pundit (2.1.0)
       activesupport (>= 3.0.0)
@@ -327,7 +327,7 @@ DEPENDENCIES
   listen (~> 3.3)
   paper_trail
   pg
-  puma (~> 5.0)
+  puma (~> 5.5)
   pundit
   rack-mini-profiler (~> 2.0)
   rails (~> 6.1.4)