diff --git a/INSTALL.md b/INSTALL.md
index cf6ed04f8..7200f5741 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -26,6 +26,7 @@ targets.
  - Modern C++ compiler that supports `-std=c++14`
    - clang++ 3.5 or later _or_
    - g++-5 or later
+ - [CMake](https://cmake.org/) (for build only)
  - [cURL](https://curl.haxx.se) (for build only)
  - [Node.js](https://nodejs.org/) (for build only)
  - [`pkg-config`](https://wiki.freedesktop.org/www/Software/pkg-config/) (for build only)