diff --git a/doc/install.md b/doc/install.md
index b94f2ec7..c021855f 100644
--- a/doc/install.md
+++ b/doc/install.md
@@ -4,7 +4,7 @@ Installation currently requires Cap'n Proto:
 
 ```sh
 apt install libcapnp-dev capnproto
-brew install capnp
+brew install capnp cmake
 dnf install capnproto
 ```