diff --git a/.gitignore b/.gitignore
index 370a5c4..b0c7019 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,3 @@
-.key
\ No newline at end of file
+.key
+.bundle/
+vendor/
diff --git a/Gemfile b/Gemfile
index 0a42d6c..f4a1ad6 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,4 +8,5 @@ gem 'sinatra'
 group :development do
   gem 'rspec'
   gem 'rack-test'
-end
\ No newline at end of file
+end
+gem "rackup", "~> 2.1"
diff --git a/Gemfile.lock b/Gemfile.lock
index f5a42aa..782755d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,52 +1,70 @@
 GEM
   remote: http://rubygems.org/
   specs:
-    activesupport (6.0.3.1)
+    activesupport (7.1.3.4)
+      base64
+      bigdecimal
       concurrent-ruby (~> 1.0, >= 1.0.2)
-      i18n (>= 0.7, < 2)
-      minitest (~> 5.1)
-      tzinfo (~> 1.1)
-      zeitwerk (~> 2.2, >= 2.2.2)
-    concurrent-ruby (1.1.6)
-    diff-lcs (1.3)
-    i18n (1.8.2)
+      connection_pool (>= 2.2.5)
+      drb
+      i18n (>= 1.6, < 2)
+      minitest (>= 5.1)
+      mutex_m
+      tzinfo (~> 2.0)
+    base64 (0.2.0)
+    bigdecimal (3.1.8)
+    concurrent-ruby (1.3.3)
+    connection_pool (2.4.1)
+    diff-lcs (1.5.1)
+    drb (2.2.1)
+    i18n (1.14.5)
       concurrent-ruby (~> 1.0)
-    icalendar (2.5.3)
+    icalendar (2.10.2)
       ice_cube (~> 0.16)
-    icalendar-recurrence (1.1.2)
+    icalendar-recurrence (1.2.0)
       icalendar (~> 2.0)
-      ice_cube (~> 0.13)
-    ice_cube (0.16.3)
-    minitest (5.14.1)
-    mustermann (1.0.3)
-    rack (2.0.8)
-    rack-protection (2.0.7)
-      rack
-    rack-test (1.1.0)
-      rack (>= 1.0, < 3)
-    rspec (3.9.0)
-      rspec-core (~> 3.9.0)
-      rspec-expectations (~> 3.9.0)
-      rspec-mocks (~> 3.9.0)
-    rspec-core (3.9.0)
-      rspec-support (~> 3.9.0)
-    rspec-expectations (3.9.0)
+      ice_cube (~> 0.16)
+      tzinfo (~> 2.0)
+    ice_cube (0.17.0)
+    minitest (5.24.1)
+    mustermann (3.0.1)
+      ruby2_keywords (~> 0.0.1)
+    mutex_m (0.2.0)
+    rack (3.1.7)
+    rack-protection (4.0.0)
+      base64 (>= 0.1.0)
+      rack (>= 3.0.0, < 4)
+    rack-session (2.0.0)
+      rack (>= 3.0.0)
+    rack-test (2.1.0)
+      rack (>= 1.3)
+    rackup (2.1.0)
+      rack (>= 3)
+      webrick (~> 1.8)
+    rspec (3.13.0)
+      rspec-core (~> 3.13.0)
+      rspec-expectations (~> 3.13.0)
+      rspec-mocks (~> 3.13.0)
+    rspec-core (3.13.0)
+      rspec-support (~> 3.13.0)
+    rspec-expectations (3.13.1)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.9.0)
-    rspec-mocks (3.9.0)
+      rspec-support (~> 3.13.0)
+    rspec-mocks (3.13.1)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.9.0)
-    rspec-support (3.9.0)
-    sinatra (2.0.7)
-      mustermann (~> 1.0)
-      rack (~> 2.0)
-      rack-protection (= 2.0.7)
+      rspec-support (~> 3.13.0)
+    rspec-support (3.13.1)
+    ruby2_keywords (0.0.5)
+    sinatra (4.0.0)
+      mustermann (~> 3.0)
+      rack (>= 3.0.0, < 4)
+      rack-protection (= 4.0.0)
+      rack-session (>= 2.0.0, < 3)
       tilt (~> 2.0)
-    thread_safe (0.3.6)
-    tilt (2.0.10)
-    tzinfo (1.2.7)
-      thread_safe (~> 0.1)
-    zeitwerk (2.3.0)
+    tilt (2.4.0)
+    tzinfo (2.0.6)
+      concurrent-ruby (~> 1.0)
+    webrick (1.8.1)
 
 PLATFORMS
   ruby
@@ -56,8 +74,9 @@ DEPENDENCIES
   icalendar
   icalendar-recurrence
   rack-test
+  rackup (~> 2.1)
   rspec
   sinatra
 
 BUNDLED WITH
-   2.0.2
+   2.5.14
diff --git a/main.rb b/main.rb
index 655813c..8fa3e32 100644
--- a/main.rb
+++ b/main.rb
@@ -14,7 +14,7 @@ module CalendarLoader
   JSON_URL = "https://www.googleapis.com/calendar/v3/calendars/#{CALENDAR_ID}/events?singleEvents=true&maxResults=2500&orderBy=startTime&key=#{GCAL_API_KEY}"
 
   def self.body
-    open(JSON_URL)
+    URI.open(JSON_URL)
   end
 end