diff --git a/.rubocop.yml b/.rubocop.yml
index 5ea8444..ab147de 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -1,4 +1,5 @@
 AllCops:
+  TargetRubyVersion: 3.1
   NewCops: enable
   DisplayStyleGuide: true
 
diff --git a/.ruby-version b/.ruby-version
deleted file mode 100644
index acf9bf0..0000000
--- a/.ruby-version
+++ /dev/null
@@ -1 +0,0 @@
-3.2.2
\ No newline at end of file
diff --git a/delivered.gemspec b/delivered.gemspec
index ea675bd..4b7a0f8 100644
--- a/delivered.gemspec
+++ b/delivered.gemspec
@@ -11,7 +11,7 @@ Gem::Specification.new do |s|
   s.homepage      = 'https://github.com/joelmoss/delivered'
   s.licenses      = ['MIT']
   s.summary       = 'Simple runtime type checking for Ruby method signatures'
-  s.required_ruby_version = '>= 3.2'
+  s.required_ruby_version = '>= 3.1'
 
   s.metadata['homepage_uri'] = s.homepage
   s.metadata['source_code_uri'] = s.homepage