diff --git a/crates/core/src/models/language.rs b/crates/core/src/models/language.rs
index d5ff22b7a..99cea8f48 100644
--- a/crates/core/src/models/language.rs
+++ b/crates/core/src/models/language.rs
@@ -278,7 +278,7 @@ impl std::str::FromStr for PiranhaLanguage {
         let ruby_rules: Rules = parse_toml(include_str!("../cleanup_rules/ruby/rules.toml"));
         let ruby_edges: Edges = parse_toml(include_str!("../cleanup_rules/ruby/edges.toml"));
         Ok(PiranhaLanguage {
-          extension: "rs".to_string(),
+          extension: "rb".to_string(),
           supported_language: SupportedLanguage::Ruby,
           language: tree_sitter_ruby::language(),
           scopes: parse_toml::<ScopeConfig>(include_str!(
@@ -286,7 +286,7 @@ impl std::str::FromStr for PiranhaLanguage {
           ))
           .scopes()
           .to_vec(),
-          comment_nodes: vec![],
+          comment_nodes: vec!["comment".to_string()],
           rules: Some(ruby_rules),
           edges: Some(ruby_edges),
         })
diff --git a/crates/core/src/tests/mod.rs b/crates/core/src/tests/mod.rs
index 29dfd4ede..90774de75 100644
--- a/crates/core/src/tests/mod.rs
+++ b/crates/core/src/tests/mod.rs
@@ -37,6 +37,7 @@ mod test_piranha_scala;
 
 mod test_piranha_thrift;
 
+mod test_piranha_ruby;
 mod test_piranha_scm;
 mod test_piranha_strings;
 mod test_piranha_yaml;
diff --git a/crates/core/src/tests/test_piranha_ruby.rs b/crates/core/src/tests/test_piranha_ruby.rs
new file mode 100644
index 000000000..b3391ef9f
--- /dev/null
+++ b/crates/core/src/tests/test_piranha_ruby.rs
@@ -0,0 +1,32 @@
+/*
+ Copyright (c) 2023 Uber Technologies, Inc.
+
+ <p>Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
+ except in compliance with the License. You may obtain a copy of the License at
+ <p>http://www.apache.org/licenses/LICENSE-2.0
+
+ <p>Unless required by applicable law or agreed to in writing, software distributed under the
+ License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ express or implied. See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+use crate::models::default_configs::RUBY;
+
+use super::create_rewrite_tests;
+
+create_rewrite_tests! {
+  RUBY,
+  test_replace_empty_if_unless_statement: "replace_empty_if_or_unless_statement", 1;
+  test_replace_ternary_operator: "replace_ternary_operator", 1;
+  test_replace_if_statement: "replace_if_statement",  3;
+  test_replace_unless_statement: "replace_unless_statement", 3;
+  test_boolean_cleanup: "simplify_boolean_expressions", 1;
+  test_simplify_rspec_block_expressions: "simplify_rspec_block_expressions", 1;
+  test_simplify_if_lambda_conditional_statements: "simplify_if_lambda_conditional_statements", 1;
+  test_simplify_unless_lambda_conditional_statements: "simplify_unless_lambda_conditional_statements", 1;
+  test_simplify_if_proc_conditional_statements: "simplify_if_proc_conditional_statements", 1;
+  test_simplify_unless_proc_conditional_statements: "simplify_unless_proc_conditional_statements", 1;
+  test_delete_lines_after_return: "delete_lines_after_return", 1;
+  simplify_variable_assigned_flag_check: "simplify_variable_assigned_flag_check", 1;
+}
\ No newline at end of file