fixes #1071 CMake 2.8.12 required (doc inaccuracy)
diff --git a/README.md b/README.md
index 0015bee..ec13d4e 100644
--- a/README.md
+++ b/README.md
@@ -25,13 +25,13 @@
* Microsoft Visual Studio 2010 (including C++) or newer, or mingw-w64.
(Specifically mingw and older Microsoft compilers are *NOT supported,
and we do not test mingw-w64 at all, so YMMV.)
- * CMake 2.8.7 or newer, available in $PATH as `cmake`
+ * CMake 2.8.12 or newer, available in $PATH as `cmake`
2. POSIX (Linux, MacOS X, UNIX)
* ANSI C compiler supporting C89
* POSIX pthreads (should be present on all modern POSIX systems)
* BSD sockets support for both TCP and UNIX domain sockets
- * CMake (http://cmake.org) 2.8.7 or newer, available in $PATH as `cmake`
+ * CMake (http://cmake.org) 2.8.12 or newer, available in $PATH as `cmake`
3. Documentation (optional)
* asciidoctor (http://asciidoctor.org/) available as `asciidoctor`
