diff --git a/Gemfile b/Gemfile
index e6b05f8..2009957 100644
--- a/Gemfile
+++ b/Gemfile
@@ -10,7 +10,7 @@ gem "rails", "~> 7.0.0.alpha2"
 gem "pg", "~> 1.1"
 
 # Use the Puma web server [https://github.com/puma/puma]
-gem "puma", "~> 5.0"
+gem "puma", "~> 5.5"
 
 # Use JavaScript with ESM import maps [https://github.com/rails/importmap-rails]
 gem "importmap-rails", ">= 0.3.4"
diff --git a/Gemfile.lock b/Gemfile.lock
index fe3fdc4..4fa35c7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -93,8 +93,10 @@ GEM
     nio4r (2.5.8)
     nokogiri (1.12.4-x86_64-darwin)
       racc (~> 1.4)
+    nokogiri (1.12.4-x86_64-linux)
+      racc (~> 1.4)
     pg (1.2.3)
-    puma (5.5.0)
+    puma (5.5.1)
       nio4r (~> 2.0)
     racc (1.5.2)
     rack (2.2.3)
@@ -157,6 +159,7 @@ GEM
 
 PLATFORMS
   x86_64-darwin-20
+  x86_64-linux
 
 DEPENDENCIES
   bootsnap (>= 1.4.4)
@@ -164,7 +167,7 @@ DEPENDENCIES
   importmap-rails (>= 0.3.4)
   jbuilder (~> 2.7)
   pg (~> 1.1)
-  puma (~> 5.0)
+  puma (~> 5.5)
   rails (~> 7.0.0.alpha2)
   redis (~> 4.0)
   stimulus-rails (>= 0.4.0)