diff --git a/backend-api/Gemfile b/backend-api/Gemfile
index b7a8e1b..04d0e5a 100644
--- a/backend-api/Gemfile
+++ b/backend-api/Gemfile
@@ -9,7 +9,7 @@ gem 'rails', '~> 6.0.1'
 # gem 'sqlite3', '~> 1.4'
 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/backend-api/Gemfile.lock b/backend-api/Gemfile.lock
index 1a6bd55..cb1a4b7 100644
--- a/backend-api/Gemfile.lock
+++ b/backend-api/Gemfile.lock
@@ -88,16 +88,18 @@ GEM
     marcel (0.3.3)
       mimemagic (~> 0.3.2)
     method_source (1.0.0)
-    mimemagic (0.3.5)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.2)
     mini_portile2 (2.4.0)
     minitest (5.14.1)
     msgpack (1.3.3)
-    nio4r (2.5.2)
+    nio4r (2.5.7)
     nokogiri (1.10.10)
       mini_portile2 (~> 2.4.0)
     pg (1.2.3)
-    puma (4.3.5)
+    puma (4.3.8)
       nio4r (~> 2.0)
     rack (2.2.3)
     rack-cors (1.1.1)
@@ -164,7 +166,7 @@ DEPENDENCIES
   byebug
   listen (>= 3.0.5, < 3.2)
   pg
-  puma (~> 4.1)
+  puma (~> 4.3)
   rack-cors
   rails (~> 6.0.1)
   spring