diff --git a/editions/prerelease/tiddlers/Release 5.1.21.tid b/editions/prerelease/tiddlers/Release 5.1.21.tid
index ae7b9b906..05766fa21 100644
--- a/editions/prerelease/tiddlers/Release 5.1.21.tid	
+++ b/editions/prerelease/tiddlers/Release 5.1.21.tid	
@@ -1,17 +1,13 @@
 caption: 5.1.21
-created: 20190809153802329
-modified: 20190809153802329
+created: 20190909164647824
+modified: 20190909164647824
 tags: ReleaseNotes
 title: Release 5.1.21
 type: text/vnd.tiddlywiki
 
 //[[See GitHub for detailed change history of this release|https://github.com/Jermolene/TiddlyWiki5/compare/v5.1.20...v5.1.21]]//
 
-This is a minor bug fix release for [[Release 5.1.20]].
-
-!! Hackability Improvements
-
-* [[Updated|https://github.com/Jermolene/TiddlyWiki5/pull/4189]] the ''Open'' sidebar tab to use the `tv-story-list` variable
+This is a bug fix release for [[Release 5.1.20]].
 
 !! Bug Fixes
 
@@ -23,6 +19,12 @@ This is a minor bug fix release for [[Release 5.1.20]].
 * [[Fixed|https://github.com/Jermolene/TiddlyWiki5/commit/dd09266b467173e45d75c172b2e82fd542f682fe]] problem with classes in the [[Table-of-Contents Macros]]
 * [[Fixed|https://github.com/Jermolene/TiddlyWiki5/pull/4203]] missing foreground colour for buttons with class `tc-btn-invisible`
 * [[Fixed|https://github.com/Jermolene/TiddlyWiki5/pull/4227]] whitespace around field editor inputs
+* [[Fixed|https://github.com/Jermolene/TiddlyWiki5/commit/bb036ced933ecb36f5d93693fb4f6e7aa2748df7]] layout problems with the [[translators edition|Translate TiddlyWiki into your language]]
+* [[Fixed|https://github.com/Jermolene/TiddlyWiki5/commit/996ee52cf9f5e15d95deaf0acf4206959d34432a]] crash with the [[External Attachments Plugin]] on Windows
+* [[Removed|https://github.com/Jermolene/TiddlyWiki5/pull/4245]] inconsistent shadow for tag pills in the sidebar
+* [[Fixed|https://github.com/Jermolene/TiddlyWiki5/issues/4247]] regression with the [[field Operator]] and blank operands
+* [[Reverted|https://github.com/Jermolene/TiddlyWiki5/pull/4249]] erroneous change in v5.1.20 in the way that lists are stringified
+* [[Fixed|https://github.com/Jermolene/TiddlyWiki5/pull/4189]] the ''Open'' sidebar tab to use the `tv-story-list` variable
 
 !! Node.js Bug Fixes
 
@@ -39,3 +41,4 @@ This is a minor bug fix release for [[Release 5.1.20]].
 * [[@hoelzro|https://github.com/hoelzro]]
 * [[@markstegeman|https://github.com/markstegeman]]
 * [[@StefanSTFG|https://github.com/StefanSTFG]]
+* [[@xcazin|https://github.com/xcazin]]