Add changelog entry for Helm operator v0.9.1
+## 0.9.1 (2019-05-09)
+
+### Bug fixes
+
+ - During the lookup of `HelmRelease`s for a mirror, ensure the
+ resource has a git chart source before comparing the mirror name
+ [weaveworks/flux#2027][#2027]
+
+### Thanks
+
+Thanks to @puzza007, @squaremo, @2opremio, @stefanprodan, @hiddeco
+for reporting the issue, patching and reviewing it.
+
+[#2027]: https://github.com/weaveworks/flux/pull/2027
+
## 0.9.0 (2019-05-08)
### Bug fixes
