diff --git a/README.rst b/README.rst
index e0db85b18..80a2a19b3 100644
--- a/README.rst
+++ b/README.rst
@@ -34,6 +34,8 @@ fish can be installed:
 -  using the `installer from fishshell.com <https://fishshell.com/>`__
 -  as a `standalone app from fishshell.com <https://fishshell.com/>`__
 
+Note: The minimum supported macOS version is 10.10 "Yosemite".
+
 Packages for Linux
 ~~~~~~~~~~~~~~~~~~
 
@@ -172,6 +174,8 @@ The install directory can be changed using the
 Building from source (macOS) - Xcode
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
+Note: The minimum supported macOS version is 10.10 "Yosemite".
+
 .. code:: bash
 
    mkdir build; cd build