diff --git a/Gemfile b/Gemfile
index 760ff58..87ca2af 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,7 +8,7 @@ gem 'rails', '~> 6.0.2', '>= 6.0.2.1'
 # Use sqlite3 as the database for Active Record
 gem 'pg'
 # Use Puma as the app server
-gem 'puma', '~> 4.1'
+gem 'puma', '~> 4.3'
 # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
 # gem 'jbuilder', '~> 2.7'
 # Use Redis adapter to run Action Cable in production
diff --git a/Gemfile.lock b/Gemfile.lock
index 0eca552..d358fe0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -110,20 +110,22 @@ GEM
       mimemagic (~> 0.3.2)
     memoist (0.16.2)
     method_source (0.9.2)
-    mimemagic (0.3.4)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.2)
     mini_portile2 (2.4.0)
     minitest (5.14.0)
     msgpack (1.3.3)
     multi_json (1.14.1)
     multipart-post (2.1.1)
-    nio4r (2.5.2)
+    nio4r (2.5.7)
     nokogiri (1.10.7)
       mini_portile2 (~> 2.4.0)
     os (1.0.1)
     pg (1.2.2)
     public_suffix (4.0.3)
-    puma (4.3.1)
+    puma (4.3.8)
       nio4r (~> 2.0)
     rack (2.2.1)
     rack-cors (1.1.1)
@@ -203,7 +205,7 @@ DEPENDENCIES
   google_drive
   listen (>= 3.0.5, < 3.2)
   pg
-  puma (~> 4.1)
+  puma (~> 4.3)
   rack-cors
   rails (~> 6.0.2, >= 6.0.2.1)
   spring