diff --git a/RELEASE_NOTES b/RELEASE_NOTES
index a6a5ed17c..cfd5c1307 100644
--- a/RELEASE_NOTES
+++ b/RELEASE_NOTES
@@ -29,6 +29,7 @@ This release has been tested on the following platforms:
 - Fedora Core 21 (64 bit) with g++-4.9.2
 - Arch Linux (64 bit) with g++-5.3.0 and clang++-3.7.1
 - CentOS/RHEL 6.7 (64-bit) with g++-4.4.7
+- OS X El Capitan 10.11.4 with Xcode 7.3 and Apple LLVM version 7.3.0
 - OS X El Capitan 10.11.3 with Xcode 7.2.1 and Apple LLVM version 7.0.2
 - OS X Yosemite 10.10.5 with Xcode 7.2.1 and Apple LLVM version 7.0.2
 - FreeBSD 10.2-RELEASE (64 bit) with clang-3.4.1