diff --git a/Gemfile b/Gemfile
index 479e42b..0b06e51 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,3 +1,5 @@
 source 'https://rubygems.org'
 
 gem "station", "0.0.119"
+
+ruby '3.0.0'