diff --git a/documentation/RELEASE_NOTES.html b/documentation/RELEASE_NOTES.html
index 4e317c84d..c47dc2d5b 100644
--- a/documentation/RELEASE_NOTES.html
+++ b/documentation/RELEASE_NOTES.html
@@ -16,6 +16,15 @@
 
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+<h3>Perl CA bindings fixed for macOS Mojave</h3>
+
+<p>Apple removed some Perl header files from macOS Mojave that were available
+in their SDK, requiring a change to the include paths used when compiling the
+CA bindings. The new version should build on new and older macOS versions, and
+these changes may also help other targets that have an incomplete installation
+of Perl (the build will continue after printing a warning that the Perl CA
+bindings could not be built).</p>
+
 <h3>Routine <tt>epicsTempName()</tt> removed from libCom</h3>
 
 <p>This routine was a simple wrapper around the C89 function <tt>tmpnam()</tt>