diff --git a/Gemfile b/Gemfile
index bf0b4025..186af7dc 100644
--- a/Gemfile
+++ b/Gemfile
@@ -14,7 +14,7 @@ gem 'doorkeeper', '~> 5.2'
 gem 'doorkeeper-i18n', '~> 5.2'
 gem 'exifr', '~> 1.3'
 gem 'friendly_id', '~> 5.2'
-gem 'http', '~> 4.0'
+gem 'http', '~> 5.0'
 gem 'iban-tools', '~> 1.1.0'
 gem 'icalendar', '~> 2.4'
 gem 'improvmx', '~> 0.2.0'
diff --git a/Gemfile.lock b/Gemfile.lock
index efc5def1..a0a73de2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -198,17 +198,15 @@ GEM
       guard-compat (~> 1.1)
       rspec (>= 2.99.0, < 4.0)
     hashdiff (1.0.1)
-    http (4.4.1)
+    http (5.0.0)
       addressable (~> 2.3)
       http-cookie (~> 1.0)
       http-form_data (~> 2.2)
-      http-parser (~> 1.2.0)
+      llhttp-ffi (~> 0.0.1)
     http-accept (1.7.0)
     http-cookie (1.0.3)
       domain_name (~> 0.5)
     http-form_data (2.3.0)
-    http-parser (1.2.3)
-      ffi-compiler (>= 1.0, < 2.0)
     http_router (0.11.2)
       rack (>= 1.0.0)
       url_mount (~> 0.2.1)
@@ -233,6 +231,9 @@ GEM
     listen (3.5.1)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
+    llhttp-ffi (0.0.1)
+      ffi-compiler (~> 1.0)
+      rake (~> 13.0)
     loofah (2.9.1)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
@@ -545,7 +546,7 @@ DEPENDENCIES
   friendly_id (~> 5.2)
   fuubar
   guard-rspec
-  http (~> 4.0)
+  http (~> 5.0)
   iban-tools (~> 1.1.0)
   icalendar (~> 2.4)
   improvmx (~> 0.2.0)
diff --git a/app/lib/mailgun_fetcher.rb b/app/lib/mailgun_fetcher.rb
index 66fc3c93..3cac608f 100644
--- a/app/lib/mailgun_fetcher.rb
+++ b/app/lib/mailgun_fetcher.rb
@@ -43,7 +43,7 @@ def json_response
         # :nocov:
         HTTP.basic_auth(user: :api,
                         pass: Rails.application.config.x.mailgun_api_key)
-            .get(@message_url).parse
+            .get(@message_url).parse(:json)
         # :nocov:
       end
     end