diff --git a/appcast.xml b/appcast.xml
index a807a3fa..56abd064 100644
--- a/appcast.xml
+++ b/appcast.xml
@@ -4,6 +4,20 @@
     <title>alt-tab-macos</title>
     <language>en</language>
 
+    <item>
+      <title>Version 6.6.0</title>
+      <pubDate>Mon, 14 Sep 2020 13:28:59 +0000</pubDate>
+      <sparkle:minimumSystemVersion>10.12</sparkle:minimumSystemVersion>
+      <sparkle:releaseNotesLink>https://alt-tab-macos.netlify.app/changelog-bare</sparkle:releaseNotesLink>
+      <enclosure
+        url="https://github.com/lwouis/alt-tab-macos/releases/download/v6.6.0/AltTab-6.6.0.zip"
+        sparkle:version="6.6.0"
+        sparkle:shortVersionString="6.6.0"
+        sparkle:edSignature="yOP5w/I2tLOkPcOrqNKT00zbnRMMKX+HFl8ZAQRjfKBq60TiHvU0byWCsvezPXn9zy759QW4/TrkV1ASw8IZCA==" length="7210377"
+        type="application/octet-stream"/>
+    </item>
+
+
     <item>
       <title>Version 6.5.0</title>
       <pubDate>Wed, 09 Sep 2020 15:05:08 +0000</pubDate>
diff --git a/docs/Changelog.md b/docs/Changelog.md
index 2accf416..e8645765 100644
--- a/docs/Changelog.md
+++ b/docs/Changelog.md
@@ -1,5 +1,17 @@
 # Release notes
 
+# [6.6.0](https://github.com/lwouis/alt-tab-macos/compare/v6.5.0...v6.6.0) (2020-09-14)
+
+
+### Bug Fixes
+
+* app would sometimes crash at launch (closes [#607](https://github.com/lwouis/alt-tab-macos/issues/607)) ([7288013](https://github.com/lwouis/alt-tab-macos/commit/7288013))
+
+
+### Features
+
+* update japanese localization ([473e08f](https://github.com/lwouis/alt-tab-macos/commit/473e08f))
+
 # [6.5.0](https://github.com/lwouis/alt-tab-macos/compare/v6.4.0...v6.5.0) (2020-09-09)