diff --git a/Gemfile b/Gemfile
index 8a6a9d8e..ad2160cc 100644
--- a/Gemfile
+++ b/Gemfile
@@ -11,7 +11,7 @@ gem "listen"
 
 gem "pg"
 
-gem "puma"
+gem "puma", ">= 3.12.6"
 
 # Use SCSS for stylesheets
 gem "sass-rails"
diff --git a/Gemfile.lock b/Gemfile.lock
index 251d1bb5..a6213712 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -166,7 +166,7 @@ GEM
       binding_of_caller (>= 0.7)
       pry (>= 0.9.11)
     public_suffix (2.0.5)
-    puma (3.6.2)
+    puma (3.12.6)
     rack (2.0.1)
     rack-test (0.6.3)
       rack (>= 1.0)
@@ -325,7 +325,7 @@ DEPENDENCIES
   pry-rails
   pry-rescue
   pry-stack_explorer
-  puma
+  puma (>= 3.12.6)
   rails
   rails-html-sanitizer
   rainbow
@@ -348,4 +348,4 @@ RUBY VERSION
    ruby 2.3.1p112
 
 BUNDLED WITH
-   1.13.6
+   1.17.3