diff --git a/debian/changelog b/debian/changelog
index 1d5ddaa..e5c37c5 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,11 @@
+gridtracker (1.21.0620) unstable; urgency=medium
+  [Bug Fixes]
+  - Fix pulling down of LoTW logs at start-up with a differential log syncing mechanism that only get's changes since last sync, also cool down timer to prevent rapid reloading of LoTW log. 
+  [Enhancements]
+  - Automatic pulling down of acknowledgements.json file daily when doing version check (if enabled). 
+
+ -- Matthew Chambers <nr0q@gridtracker.org> Sat, 19 June 20201 16:49:00 -0000
+ 
 gridtracker (1.21.0613) unstable; urgency=medium
   [Bug Fixes]
   - Fix pulling down LoTW log at start-up causing issue for other programs that are trying to sync LoTW logs.
diff --git a/package.nw/gt_update.odt b/package.nw/gt_update.odt
index 70b150b..3a83295 100644
Binary files a/package.nw/gt_update.odt and b/package.nw/gt_update.odt differ
diff --git a/package.nw/gt_update.pdf b/package.nw/gt_update.pdf
index 5db90ba..ec6f924 100644
Binary files a/package.nw/gt_update.pdf and b/package.nw/gt_update.pdf differ
diff --git a/package.nw/package.json b/package.nw/package.json
index cddd5ae..ac445a4 100644
--- a/package.nw/package.json
+++ b/package.nw/package.json
@@ -1,7 +1,7 @@
 {
   "name": "GridTracker",
   "product_string_do_not_use": "gridtracker",
-  "version": "1.21.0613",
+  "version": "1.21.0620",
   "betaVersion": "",
   "description": "GridTracker, an amateur radio companion",
   "author": "Stephen Loomis (N0TTL) and GridTracker.org",