diff --git a/README.md b/README.md
index 5cc1255..6db8592 100644
--- a/README.md
+++ b/README.md
@@ -161,8 +161,12 @@ simpler forks so far, but would love to collaborate on improving it.
 
 ## Mirrors and Forks
 
-This repo is a fork of [lines.love](http://akkartik.name/lines.html). Updates
-to it can be downloaded from:
+This repo is a fork of lines.love at
+[http://akkartik.name/lines.html](http://akkartik.name/lines.html), an editor
+for plain text where you can also seamlessly insert line drawings.
+Its immediate upstream is [pensieve.love](https://git.sr.ht/~akkartik/pensieve.love),
+a private note-taking app for a single individual. Updates to it can be
+downloaded from:
 
 * https://git.sr.ht/~akkartik/techmeet.love