diff --git a/Dashboard:-Filter-lists.md b/Dashboard:-Filter-lists.md
index d7d58df..a15f058 100644
--- a/Dashboard:-Filter-lists.md
+++ b/Dashboard:-Filter-lists.md
@@ -79,6 +79,9 @@ Filter lists are automatically updated according to _expiration time_ defined by
 
 Don't worry if you sometimes notice that some of your lists are marked "⚠️ Out of date" or some of them appear to update every time you open the dashboard. uBO updates filters lists in periodic sessions. In regular browser usage, the first one begins [`autoUpdateDelayAfterLaunch`](./Advanced-settings#autoupdatedelayafterlaunch) (105) seconds after uBO (your browser) is started. Lists found to be outdated (for which _expiration time_ passed) are then downloaded in [`autoUpdateAssetFetchPeriod`](./Advanced-settings#autoupdateassetfetchperiod) (15) seconds intervals. After this update session ends, uBO will wait [`autoUpdatePeriod`](./Advanced-settings#autoupdateperiod) (1) hour to start updating filters again. Update session will also be triggered by opening the dashboard, that's why you may notice it more often. As you see, there can be periods of time between update sessions, where your lists appear to be outdated, but it's normal update cycle. In irregular browser usage, when your lists expiration time is exceeded more than twice, uBO will trigger "emergency" update, which should give you all your lists updated in below one minute after start.
 
+
+Note: As for AdGuard filter lists in uBlock Origin: AdGuard uses a different way to encode diff-expires, currently there is no code yet in uBO to deal with AdGuard's differential update approach, hence their filter lists in uBO lack _Diff-Expires_ directive, and have only _Diff-Path_, which means that differential updates for AdGuard lists work only in AdGuard, while in uBlock Origin they fallback to regular _Expires_ directive, which is set to 5 days currently in their fiter lists, related issue: https://github.com/uBlockOrigin/uBlock-issues/discussions/3282.
+
 ***
 
 ### Parse and enforce cosmetic filters