diff --git a/Gemfile b/Gemfile
index 7f2eca03b..b5f950bd9 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,6 +4,8 @@ source "https://rubygems.org"
 
 gemspec
 
+ruby ">= 3.1"
+
 gem "bundler", "~> 2.5"
 gem "minitest", "~> 5.23"
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 5d88b8275..85d2ab6bc 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -156,5 +156,8 @@ DEPENDENCIES
   syntax_tree (>= 6.1.1, < 7)
   tapioca (~> 0.13)
 
+RUBY VERSION
+   ruby 3.3.4p94
+
 BUNDLED WITH
    2.5.10