diff --git a/ruby_basics/1_data_types/.rspec b/ruby_basics/01_data_types/.rspec
similarity index 100%
rename from ruby_basics/1_data_types/.rspec
rename to ruby_basics/01_data_types/.rspec
diff --git a/ruby_basics/1_data_types/exercises/numbers_exercises.rb b/ruby_basics/01_data_types/exercises/numbers_exercises.rb
similarity index 100%
rename from ruby_basics/1_data_types/exercises/numbers_exercises.rb
rename to ruby_basics/01_data_types/exercises/numbers_exercises.rb
diff --git a/ruby_basics/1_data_types/exercises/string_exercises.rb b/ruby_basics/01_data_types/exercises/string_exercises.rb
similarity index 100%
rename from ruby_basics/1_data_types/exercises/string_exercises.rb
rename to ruby_basics/01_data_types/exercises/string_exercises.rb
diff --git a/ruby_basics/1_data_types/spec/numbers_exercises_spec.rb b/ruby_basics/01_data_types/spec/numbers_exercises_spec.rb
similarity index 100%
rename from ruby_basics/1_data_types/spec/numbers_exercises_spec.rb
rename to ruby_basics/01_data_types/spec/numbers_exercises_spec.rb
diff --git a/ruby_basics/1_data_types/spec/spec_helper.rb b/ruby_basics/01_data_types/spec/spec_helper.rb
similarity index 100%
rename from ruby_basics/1_data_types/spec/spec_helper.rb
rename to ruby_basics/01_data_types/spec/spec_helper.rb
diff --git a/ruby_basics/1_data_types/spec/strings_exercises_spec.rb b/ruby_basics/01_data_types/spec/strings_exercises_spec.rb
similarity index 100%
rename from ruby_basics/1_data_types/spec/strings_exercises_spec.rb
rename to ruby_basics/01_data_types/spec/strings_exercises_spec.rb
diff --git a/ruby_basics/6_arrays/.rspec b/ruby_basics/06_arrays/.rspec
similarity index 100%
rename from ruby_basics/6_arrays/.rspec
rename to ruby_basics/06_arrays/.rspec
diff --git a/ruby_basics/6_arrays/exercises/array_exercises.rb b/ruby_basics/06_arrays/exercises/array_exercises.rb
similarity index 100%
rename from ruby_basics/6_arrays/exercises/array_exercises.rb
rename to ruby_basics/06_arrays/exercises/array_exercises.rb
diff --git a/ruby_basics/6_arrays/spec/array_exercises_spec.rb b/ruby_basics/06_arrays/spec/array_exercises_spec.rb
similarity index 100%
rename from ruby_basics/6_arrays/spec/array_exercises_spec.rb
rename to ruby_basics/06_arrays/spec/array_exercises_spec.rb
diff --git a/ruby_basics/6_arrays/spec/spec_helper.rb b/ruby_basics/06_arrays/spec/spec_helper.rb
similarity index 100%
rename from ruby_basics/6_arrays/spec/spec_helper.rb
rename to ruby_basics/06_arrays/spec/spec_helper.rb
diff --git a/ruby_basics/7_hashes/.rspec b/ruby_basics/07_hashes/.rspec
similarity index 100%
rename from ruby_basics/7_hashes/.rspec
rename to ruby_basics/07_hashes/.rspec
diff --git a/ruby_basics/7_hashes/exercises/hash_exercises.rb b/ruby_basics/07_hashes/exercises/hash_exercises.rb
similarity index 100%
rename from ruby_basics/7_hashes/exercises/hash_exercises.rb
rename to ruby_basics/07_hashes/exercises/hash_exercises.rb
diff --git a/ruby_basics/7_hashes/spec/hash_exercises_spec.rb b/ruby_basics/07_hashes/spec/hash_exercises_spec.rb
similarity index 100%
rename from ruby_basics/7_hashes/spec/hash_exercises_spec.rb
rename to ruby_basics/07_hashes/spec/hash_exercises_spec.rb
diff --git a/ruby_basics/7_hashes/spec/spec_helper.rb b/ruby_basics/07_hashes/spec/spec_helper.rb
similarity index 100%
rename from ruby_basics/7_hashes/spec/spec_helper.rb
rename to ruby_basics/07_hashes/spec/spec_helper.rb
diff --git a/ruby_basics/8_methods/.rspec b/ruby_basics/08_methods/.rspec
similarity index 100%
rename from ruby_basics/8_methods/.rspec
rename to ruby_basics/08_methods/.rspec
diff --git a/ruby_basics/8_methods/exercises/method_exercises.rb b/ruby_basics/08_methods/exercises/method_exercises.rb
similarity index 100%
rename from ruby_basics/8_methods/exercises/method_exercises.rb
rename to ruby_basics/08_methods/exercises/method_exercises.rb
diff --git a/ruby_basics/8_methods/spec/method_exercises_spec.rb b/ruby_basics/08_methods/spec/method_exercises_spec.rb
similarity index 100%
rename from ruby_basics/8_methods/spec/method_exercises_spec.rb
rename to ruby_basics/08_methods/spec/method_exercises_spec.rb
diff --git a/ruby_basics/8_methods/spec/spec_helper.rb b/ruby_basics/08_methods/spec/spec_helper.rb
similarity index 100%
rename from ruby_basics/8_methods/spec/spec_helper.rb
rename to ruby_basics/08_methods/spec/spec_helper.rb
diff --git a/ruby_basics/9_debugging/.rspec b/ruby_basics/09_debugging/.rspec
similarity index 100%
rename from ruby_basics/9_debugging/.rspec
rename to ruby_basics/09_debugging/.rspec
diff --git a/ruby_basics/9_debugging/exercises/debugging_exercises.rb b/ruby_basics/09_debugging/exercises/debugging_exercises.rb
similarity index 100%
rename from ruby_basics/9_debugging/exercises/debugging_exercises.rb
rename to ruby_basics/09_debugging/exercises/debugging_exercises.rb
diff --git a/ruby_basics/9_debugging/spec/debugging_exercises_spec.rb b/ruby_basics/09_debugging/spec/debugging_exercises_spec.rb
similarity index 100%
rename from ruby_basics/9_debugging/spec/debugging_exercises_spec.rb
rename to ruby_basics/09_debugging/spec/debugging_exercises_spec.rb
diff --git a/ruby_basics/9_debugging/spec/spec_helper.rb b/ruby_basics/09_debugging/spec/spec_helper.rb
similarity index 100%
rename from ruby_basics/9_debugging/spec/spec_helper.rb
rename to ruby_basics/09_debugging/spec/spec_helper.rb