diff --git a/_config.yml b/_config.yml
index a4af2a187d1..a7b16a6bf6a 100644
--- a/_config.yml
+++ b/_config.yml
@@ -140,13 +140,13 @@ social:
 # Home Assistant release details
 current_major_version: 0
 current_minor_version: 66
-current_patch_version: 0
-date_released: 2018-03-30
+current_patch_version: 1
+date_released: 2018-04-01
 
 # Either # or the anchor link to latest release notes in the blog post.
 # Must be prefixed with a # and have double quotes around it.
 # Major release:
-patch_version_notes: "#"
+patch_version_notes: "#release-0661---april-1"
 # Minor release (Example #release-0431---april-25):
 
 # Date we moved to Discourse for comments
diff --git a/source/_posts/2018-03-30-release-66.markdown b/source/_posts/2018-03-30-release-66.markdown
index 787e60b074d..3cb379af267 100644
--- a/source/_posts/2018-03-30-release-66.markdown
+++ b/source/_posts/2018-03-30-release-66.markdown
@@ -36,6 +36,13 @@ A quick note if you are using Philips Hue and a Hue custom component: it will no
 - Add trafikverket_weatherstation sensor platform ([@Qxlkdr] - [#12115]) ([sensor.trafikverket_weatherstation docs]) (new-platform)
 - Security fix & lock for HomeMatic ([@PH89] - [#11980]) ([homematic docs]) ([lock docs]) ([lock.homematic docs]) (breaking change) (new-platform)
 
+## {% linkable_title Release 0.66.1 - April 1 %}
+
+- Update frontend to fix climate and chart issues ([@NovapaX] & [@c727])
+- Fix mqtt_json color commands ([@armills] - [#13617]) ([light.mqtt_json docs])
+- Add pincode fallback ([@cdce8p] - [#13587]) ([homekit docs])
+- Fix mysensors sensor type lookup ([@MartinHjelmare] - [#13574]) ([sensor.mysensors docs])
+
 ## {% linkable_title If you need help... %}
 
 ...don't hesitate to use our very active [forums](https://community.home-assistant.io/) or join us for a little [chat](https://discord.gg/c5DvZ4e). The release notes have comments enabled but it's preferred if you use the former communication channels. Thanks.
@@ -553,3 +560,12 @@ Experiencing issues introduced by this release? Please report them in our [issue
 [zeroconf docs]: /components/zeroconf/
 [zha docs]: /components/zha/
 [zwave docs]: /components/zwave/
+[#13574]: https://github.com/home-assistant/home-assistant/pull/13574
+[#13587]: https://github.com/home-assistant/home-assistant/pull/13587
+[#13617]: https://github.com/home-assistant/home-assistant/pull/13617
+[@MartinHjelmare]: https://github.com/MartinHjelmare
+[@armills]: https://github.com/armills
+[@cdce8p]: https://github.com/cdce8p
+[homekit docs]: https://www.home-assistant.io/components/homekit/
+[light.mqtt_json docs]: https://www.home-assistant.io/components/light.mqtt_json/
+[sensor.mysensors docs]: https://www.home-assistant.io/components/sensor.mysensors/