diff --git a/README.md b/README.md
index 6142a1a..5949108 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,16 @@ capnpc-c
 This is a C plugin for [Cap'n Proto](http://kentonv.github.io/capnproto), an
 efficient protocol for sharing data and capabilities.
 
+## UNMAINTAINED
+
+This project is currently **NOT MAINTAINED**.  If you are interested in
+taking over maintenance and/or need this for some project, please look at
+issue https://github.com/opensourcerouting/c-capnproto/issues/55
+
+No releases will be made.  PRs may sit unreviewed for multiple years.  **PRs
+MAY get merged WITHOUT ANY REVIEW, as a last ditch attempt to not waste
+people's efforts on PRs.  This means things may break completely.**
+
 > ## Security warning!
 
 > The generated code assumes all input to be trusted. Do NOT use with