diff --git a/ReadMe-2.4.3 b/ReadMe-2.4.3
index 62cfd9c..40792ec 100644
--- a/ReadMe-2.4.3
+++ b/ReadMe-2.4.3
@@ -38,10 +38,13 @@ BSDs
 - DragonflyBSD 4.4.2 + gcc 5.2.1
 - MidnightBSD 0.7 + gcc 4.2.1
 
-Other
+UNIXes
 - Solaris 10 x86 + gcc 3.4.3
 - OpenIndiana 151 + gcc 4.8.5 [an OpenSolaris/illumos distro]
-- IBM AIX 5.2 + gcc 4.3.1
+- AIX 5.2 + gcc 4.3.1
+- HP-UX 11.23 + gcc 4.2.3
+
+Other
 - Minix 3.3.0 + LLVM/clang
 - Debian GNU/Hurd 0.6 + gcc 4.9.2
 - Cygwin 2.4.1 (amd64) + gcc 5.3.0