diff --git a/Gemfile b/Gemfile
index a1b23d2..b0d084c 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,7 +8,7 @@ gem 'rails', '~> 6.1.4'
 # Use postgresql as the database for Active Record
 gem 'pg', '~> 1.1'
 # Use Puma as the app server
-gem 'puma', '~> 5.0'
+gem 'puma', '~> 5.5'
 # Transpile app-like JavaScript. Read more: https://github.com/rails/webpacker
 gem 'webpacker', '~> 5.0'
 # Use Redis adapter to run Action Cable in production, and other things.
diff --git a/Gemfile.lock b/Gemfile.lock
index e496710..3788bd5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -91,11 +91,11 @@ 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)
     pg (1.2.3)
-    puma (5.3.2)
+    puma (5.5.1)
       nio4r (~> 2.0)
     racc (1.5.2)
     rack (2.2.3)
@@ -175,7 +175,7 @@ DEPENDENCIES
   image_processing (~> 1.2)
   listen (~> 3.3)
   pg (~> 1.1)
-  puma (~> 5.0)
+  puma (~> 5.5)
   rack-mini-profiler (~> 2.0)
   rails (~> 6.1.4)
   redis (~> 4.0)