diff --git a/lib/versioning/ruby/index.ts b/lib/versioning/ruby/index.ts
index 76c69df1f1fc75996abdb99e36c3c55001489932..d711e6b65a453b439e0e34fc8364da52f679061d 100644
--- a/lib/versioning/ruby/index.ts
+++ b/lib/versioning/ruby/index.ts
@@ -110,6 +110,7 @@ const getNewValue = ({
         newValue = bump({ range: vtrim(currentValue), to: vtrim(newVersion) });
         break;
       case 'auto':
+      case 'widen':
       case 'replace':
         newValue = replace({
           range: vtrim(currentValue),