diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 7a2dd8a..b9f066d 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -16,7 +16,6 @@ jobs:
       matrix:
         database: [mysql, postgres, sqlite]
         ruby-version:
-          - 3.1
           - 3.2
           - 3.3
           - 3.4
diff --git a/solid_cable.gemspec b/solid_cable.gemspec
index a69a430..212b77a 100644
--- a/solid_cable.gemspec
+++ b/solid_cable.gemspec
@@ -21,7 +21,7 @@ Gem::Specification.new do |spec|
   end
 
   rails_version = ">= 7.2"
-  spec.required_ruby_version = ">= 3.1.0"
+  spec.required_ruby_version = ">= 3.2.0"
   spec.add_dependency "activerecord", rails_version
   spec.add_dependency "activejob", rails_version
   spec.add_dependency "actioncable", rails_version
diff --git a/test/config_stubs.rb b/test/config_stubs.rb
index ef7548a..84a30f4 100644
--- a/test/config_stubs.rb
+++ b/test/config_stubs.rb
@@ -4,9 +4,9 @@ module ConfigStubs
   extend ActiveSupport::Concern
 
   class ConfigStub
-    def initialize(**opts)
+    def initialize(**)
       @config = ActiveSupport::OrderedOptions.new.
-                update({ adapter: :test }.merge(**opts))
+                update({ adapter: :test }.merge(**))
     end
 
     def config_for(_file)
@@ -23,7 +23,7 @@ def run!
     end
   end
 
-  def with_cable_config(**opts)
-    Rails.stub(:application, ConfigStub.new(**opts)) { yield }
+  def with_cable_config(**)
+    Rails.stub(:application, ConfigStub.new(**)) { yield }
   end
 end