diff --git a/Gemfile b/Gemfile
index 6487ed0..ea9b4b0 100644
--- a/Gemfile
+++ b/Gemfile
@@ -16,7 +16,7 @@ group :development, :test do
   gem 'byebug', '11.1.2', platforms: [:mri, :mingw, :x64_mingw]
   gem 'shotgun'
   gem 'rack'
-  gem 'puma', '4.3.3'
+  gem 'puma', '4.3.12'
   gem 'pry'
 end
 
diff --git a/Gemfile.lock b/Gemfile.lock
index aa1f022..ba32993 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -108,7 +108,7 @@ GEM
       aws-eventstream (~> 1.0, >= 1.0.2)
     aws_config (0.1.0)
     builder (3.2.4)
-    byebug (11.1.3)
+    byebug (11.1.2)
     capybara (3.32.2)
       addressable
       mini_mime (>= 0.1.3)
@@ -195,12 +195,14 @@ GEM
       mini_mime (>= 0.1.1)
     memoist (0.16.2)
     method_source (1.0.0)
-    mimemagic (0.3.5)
+    mimemagic (0.4.3)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.2)
     mini_portile2 (2.4.0)
     minitest (5.14.1)
     multipart-post (2.1.1)
-    nio4r (2.5.2)
+    nio4r (2.5.8)
     nokogiri (1.10.9)
       mini_portile2 (~> 2.4.0)
     protocol-hpack (1.4.2)
@@ -217,7 +219,7 @@ GEM
       coderay (~> 1.1)
       method_source (~> 1.0)
     public_suffix (4.0.5)
-    puma (4.3.5)
+    puma (4.3.12)
       nio4r (~> 2.0)
     rack (2.2.2)
     rack-test (1.1.0)
@@ -281,13 +283,13 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  byebug
+  byebug (= 11.1.2)
   capybara
   dynomite
   jets
   launchy
   pry
-  puma
+  puma (= 4.3.12)
   rack
   rspec
   shotgun