diff --git a/lib/gocardless_pro/client.rb b/lib/gocardless_pro/client.rb
index ae63df0..7f9ba3c 100644
--- a/lib/gocardless_pro/client.rb
+++ b/lib/gocardless_pro/client.rb
@@ -233,7 +233,7 @@ def default_options
           'User-Agent' => "#{user_agent}",
           'Content-Type' => 'application/json',
           'GoCardless-Client-Library' => 'gocardless-pro-ruby',
-          'GoCardless-Client-Version' => '2.57.0'
+          'GoCardless-Client-Version' => '3.0.0'
         }
       }
     end
diff --git a/lib/gocardless_pro/version.rb b/lib/gocardless_pro/version.rb
index 22c003b..ba64b1c 100644
--- a/lib/gocardless_pro/version.rb
+++ b/lib/gocardless_pro/version.rb
@@ -3,5 +3,5 @@ module GoCardlessPro
 
 module GoCardlessPro
   # Current version of the GC gem
-  VERSION = '2.57.0'
+  VERSION = '3.0.0'
 end