diff --git a/Gemfile b/Gemfile
index 25aefc1..1108377 100644
--- a/Gemfile
+++ b/Gemfile
@@ -10,7 +10,7 @@ gem 'rails', '~> 6.1.3', '>= 6.1.3.2'
 gem 'pg'
 gem 'devise'
 # Use Puma as the app server
-gem 'puma', '~> 5.0'
+gem 'puma', '~> 5.6'
 # Use SCSS for stylesheets
 gem 'sass-rails', '>= 6'
 # Transpile app-like JavaScript. Read more: https://github.com/rails/webpacker
diff --git a/Gemfile.lock b/Gemfile.lock
index 702ebd8..7459a3b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -129,7 +129,7 @@ GEM
     msgpack (1.4.2)
     multi_json (1.15.0)
     multipart-post (2.1.1)
-    nio4r (2.5.7)
+    nio4r (2.5.8)
     nokogiri (1.11.7-x86_64-linux)
       racc (~> 1.4)
     orm_adapter (0.5.0)
@@ -137,7 +137,7 @@ GEM
     pragmatic_tokenizer (3.2.0)
       unicode
     public_suffix (4.0.6)
-    puma (5.3.2)
+    puma (5.6.4)
       nio4r (~> 2.0)
     racc (1.5.2)
     rack (2.2.3)
@@ -258,7 +258,7 @@ DEPENDENCIES
   listen (~> 3.3)
   pg
   pragmatic_tokenizer
-  puma (~> 5.0)
+  puma (~> 5.6)
   rack-mini-profiler (~> 2.0)
   rails (~> 6.1.3, >= 6.1.3.2)
   rsolr