diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
index 862949f..d09a552 100644
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -1,6 +1,6 @@
 # This configuration was generated by
 # `rubocop --auto-gen-config --no-offense-counts --no-auto-gen-timestamp`
-# using RuboCop version 1.60.2.
+# using RuboCop version 1.63.4.
 # The point is for the user to remove these configuration records
 # one by one as the offenses are removed from the code base.
 # Note that changes in the inspected code, or installation of new
@@ -48,6 +48,7 @@ Naming/AccessorMethodName:
 # AllowedAcronyms: CLI, DSL, ACL, API, ASCII, CPU, CSS, DNS, EOF, GUID, HTML, HTTP, HTTPS, ID, IP, JSON, LHS, QPS, RAM, RHS, RPC, SLA, SMTP, SQL, SSH, TCP, TLS, TTL, UDP, UI, UID, UUID, URI, URL, UTF8, VM, XML, XMPP, XSRF, XSS
 Naming/FileName:
   Exclude:
+    - 'Rakefile.rb'
     - 'lib/omniauth-cas.rb'
 
 RSpec/AnyInstance:
diff --git a/lib/omniauth/strategies/cas.rb b/lib/omniauth/strategies/cas.rb
index d60e9fe..7975dba 100644
--- a/lib/omniauth/strategies/cas.rb
+++ b/lib/omniauth/strategies/cas.rb
@@ -152,7 +152,7 @@ def validate_cas_setup
       # +service+ and add it and the +ticket+ as paraemters to the
       # CAS serviceValidate URL.
       #
-      # @param [String] service the service (a.k.a. return-to) URL
+      # @param [String] service_url the service (a.k.a. return-to) URL
       # @param [String] ticket the ticket to validate
       #
       # @return [String] a URL like `http://cas.mycompany.com/serviceValidate?service=...&ticket=...`