diff --git a/gouda.gemspec b/gouda.gemspec
index a368a36..d6206d3 100644
--- a/gouda.gemspec
+++ b/gouda.gemspec
@@ -9,7 +9,7 @@ Gem::Specification.new do |spec|
   spec.email = ["sebastian@cheddar.me", "me@julik.nl"]
   spec.homepage = "https://rubygems.org/gems/gouda"
   spec.license = "MIT"
-  spec.required_ruby_version = Gem::Requirement.new(">= 2.4.0")
+  spec.required_ruby_version = Gem::Requirement.new(">= 2.7.0")
   spec.require_paths = ["lib"]
 
   spec.metadata["homepage_uri"] = spec.homepage
diff --git a/lib/gouda.rb b/lib/gouda.rb
index e5dbcce..d5a2b6f 100644
--- a/lib/gouda.rb
+++ b/lib/gouda.rb
@@ -57,7 +57,7 @@ def self.start
     Gouda.logger.info("Gouda version: #{Gouda::VERSION}")
     Gouda.logger.info("Worker threads: #{Gouda.config.worker_thread_count}")
 
-    Gouda.worker_loop(n_threads: Gouda.config.worker_thread_count, queue_constraint:)
+    Gouda.worker_loop(n_threads: Gouda.config.worker_thread_count, queue_constraint: queue_constraint)
   end
 
   def self.config
diff --git a/lib/gouda/scheduler.rb b/lib/gouda/scheduler.rb
index a7d4552..491f368 100644
--- a/lib/gouda/scheduler.rb
+++ b/lib/gouda/scheduler.rb
@@ -72,7 +72,7 @@ def self.update_schedule_from_config!(cron_table_hash = nil)
       # `class` is a reserved keyword and a method that exists on every Ruby object so...
       cron_entry_params[:job_class] ||= cron_entry_params.delete(:class)
       params_with_defaults = defaults.merge(cron_entry_params)
-      Entry.new(name:, **params_with_defaults)
+      Entry.new(name: name, **params_with_defaults)
     end
   end
 
diff --git a/test/gouda/test_helper.rb b/test/gouda/test_helper.rb
index e1dbe34..2326e22 100644
--- a/test/gouda/test_helper.rb
+++ b/test/gouda/test_helper.rb
@@ -8,7 +8,7 @@
 require "minitest/autorun"
 require "minitest"
 require "support/assert_helper"
-require "gouda"
+require_relative "../../lib/gouda"
 
 class ActiveSupport::TestCase
   SEED_DB_NAME = -> { "gouda_tests_%s" % Random.new(Minitest.seed).hex(4) }
diff --git a/test/gouda/worker_test.rb b/test/gouda/worker_test.rb
index 72937b6..7072fe1 100644
--- a/test/gouda/worker_test.rb
+++ b/test/gouda/worker_test.rb
@@ -15,7 +15,6 @@ class GoudaWorkerTest < ActiveSupport::TestCase
   # multiple test processes on the same box - and they might start touching
   # files from each other.
   PATH_TO_TEST_FILE = -> { Tempfile.new("#{Process.pid}-gouda-worker-test-output.bin") }
-  # PATH_TO_TEST_FILE = -> { File.expand_path(File.join(ENV["TEMPDR"] || "tmp", "#{Process.pid}-gouda-worker-test-output.bin")) }
 
   class JobWithEnqueueKey < ActiveJob::Base
     self.queue_adapter = :gouda