diff --git a/Gemfile b/Gemfile
index 5b6700d..dd825d1 100644
--- a/Gemfile
+++ b/Gemfile
@@ -24,7 +24,7 @@ gem 'graphql-preload'
 gem 'foreman'
 
 # Use Puma as the app server
-gem 'puma', '~> 3.0'
+gem 'puma', '~> 5.6'
 
 # Rack Middleware for handling Cross-Origin Resource Sharing (CORS), which makes cross-origin AJAX possible
 gem 'rack-cors'
diff --git a/Gemfile.lock b/Gemfile.lock
index 4d1d453..a5a520c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -48,10 +48,6 @@ GEM
       ice_nine (~> 0.11.0)
       thread_safe (~> 0.3, >= 0.3.1)
     bcrypt (3.1.13)
-    better_errors (2.5.1)
-      coderay (>= 1.0.0)
-      erubi (>= 1.0.0)
-      rack (>= 0.9.0)
     bindex (0.7.0)
     binding_of_caller (0.8.0)
       debug_inspector (>= 0.0.1)
@@ -81,13 +77,10 @@ GEM
       warden (~> 1.2.3)
     diff-lcs (1.3)
     equalizer (0.0.11)
-    erubi (1.8.0)
     erubis (2.7.0)
     execjs (2.7.0)
     faker (1.9.3)
       i18n (>= 0.7)
-    fcm (0.0.6)
-      httparty (~> 0.10, >= 0.10.0)
     ffi (1.11.1)
     foreman (0.85.0)
       thor (~> 0.19.1)
@@ -106,9 +99,6 @@ GEM
       graphql (>= 1.5, < 2)
       graphql-batch (~> 0.3)
       promise.rb (~> 0.7)
-    httparty (0.17.0)
-      mime-types (~> 3.0)
-      multi_xml (>= 0.5.2)
     i18n (1.6.0)
       concurrent-ruby (~> 1.0)
     ice_nine (0.11.2)
@@ -127,16 +117,12 @@ GEM
     mail (2.7.1)
       mini_mime (>= 0.1.1)
     method_source (0.9.2)
-    mime-types (3.2.2)
-      mime-types-data (~> 3.2015)
-    mime-types-data (3.2019.0331)
     mini_mime (1.0.1)
     mini_portile2 (2.4.0)
     mini_racer (0.2.6)
       libv8 (>= 6.9.411)
     minitest (5.11.3)
     msgpack (1.2.10)
-    multi_xml (0.6.0)
     nio4r (2.3.1)
     nokogiri (1.10.3)
       mini_portile2 (~> 2.4.0)
@@ -152,7 +138,8 @@ GEM
     pry-rails (0.3.9)
       pry (>= 0.10.4)
     psych (3.1.0)
-    puma (3.12.1)
+    puma (5.6.7)
+      nio4r (~> 2.0)
     rack (2.0.7)
     rack-attack (6.0.0)
       rack (>= 1.0, < 3)
@@ -282,7 +269,6 @@ PLATFORMS
 
 DEPENDENCIES
   annotate
-  better_errors
   binding_of_caller
   bootsnap
   brakeman
@@ -290,7 +276,6 @@ DEPENDENCIES
   database_cleaner
   devise
   faker
-  fcm
   foreman
   graphiql-rails (= 1.4.8)
   graphql (~> 1.8.0)
@@ -301,7 +286,7 @@ DEPENDENCIES
   mini_racer
   pg
   pry-rails
-  puma (~> 3.0)
+  puma (~> 5.6)
   rack-attack
   rack-cors
   rails (~> 5.0.6)