diff --git a/README.md b/README.md
index 7c68ab3..81fc244 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,8 @@ SERV is an award-winning bit-serial RISC-V core
 
 If you want to know more about SERV, what a bit-serial CPU is and what it's good for, I recommend starting out by watching the movies [introduction to SERV](https://diode.zone/videos/watch/0230a518-e207-4cf6-b5e2-69cc09411013) and the [presentation from the Zürich 2019 RISC-V workshop](https://www.youtube.com/watch?v=xjIxORBRaeQ)
 
+There's also an official [SERV user manual](https://serv.readthedocs.io/en/latest/#) with fancy block diagrams and an in-depth description of how some things work.
+
 ## Prerequisites
 
 Create a directory to keep all the different parts of the project together. We