diff --git a/extensions/ruby/languages/ruby/config.toml b/extensions/ruby/languages/ruby/config.toml
index e0e6091e6af..369f3beaadb 100644
--- a/extensions/ruby/languages/ruby/config.toml
+++ b/extensions/ruby/languages/ruby/config.toml
@@ -38,3 +38,4 @@ brackets = [
     ] },
 ]
 collapsed_placeholder = "# ..."
+tab_size = 2