diff --git a/README.md b/README.md
index bad82f81fa..709c94f4db 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ If you're doing development on Urbit, keep reading.
 - [GNU Make](https://www.gnu.org/software/make/)
 - [GMP](https://gmplib.org)
 - [CMake](https://cmake.org)
-- [libuv](https://libuv.org)
+- [libuv](https://libuv.org) 1.x
 - [OpenSSL](https://www.openssl.org)
 - [libsigsegv](https://www.gnu.org/software/libsigsegv/)
 - [libcurl](https://curl.haxx.se/libcurl/)