diff --git a/Gemfile b/Gemfile
index 98dd3d4..b29ff4f 100644
--- a/Gemfile
+++ b/Gemfile
@@ -12,7 +12,7 @@ gem "bcrypt", "~> 3.1.7"
 gem "devise"
 gem "jbuilder", "~> 2.7"
 gem "pg", "~> 1.1"
-gem "puma", "~> 5.3"
+gem "puma", "~> 5.5"
 gem "redis", "~> 4.0"
 gem "sidekiq"
 gem "simple_form"
diff --git a/Gemfile.lock b/Gemfile.lock
index 716411d..1eb4681 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -173,7 +173,7 @@ GEM
     momentjs-rails (2.20.1)
       railties (>= 3.1)
     msgpack (1.4.2)
-    nio4r (2.5.7)
+    nio4r (2.5.8)
     nokogiri (1.11.4)
       mini_portile2 (~> 2.5.0)
       racc (~> 1.4)
@@ -193,7 +193,7 @@ GEM
     pry-rails (0.3.9)
       pry (>= 0.10.4)
     public_suffix (4.0.6)
-    puma (5.3.1)
+    puma (5.5.1)
       nio4r (~> 2.0)
     racc (1.5.2)
     rack (2.2.3)
@@ -374,7 +374,7 @@ DEPENDENCIES
   pg (~> 1.1)
   pry-byebug
   pry-rails
-  puma (~> 5.3)
+  puma (~> 5.5)
   rails (~> 6.1.3)
   redis (~> 4.0)
   rspec-rails (~> 4.0)