CHANGELOG.md in benchmark_driver-0.7.0 vs CHANGELOG.md in benchmark_driver-0.7.1

@@ -1,4 +1,9 @@
+# v0.7.1
+
+- Add `x.rbenv` to Ruby interface
+- Add `x.bundler` to Ruby interface
+
 # v0.7.0
 
 - Change Ruby interface for specifying prelude and script
   - #prelude= is remaed to #prelude
   - `script:` is no longer a keyword argument