diff --git a/CHANGELOG b/CHANGELOG
index d1af14e..302d9cd 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,6 @@
+### 5.0.1 (Released 2017-12-23) ###
+ - Update macOS (Mac OS X) installer to identify OS version 10.13 (High Sierra)
+
 ### 5.0.0 (Released 2017-08-21) ###
  - Update diagnostics report for FMS 16.
  - Update Mac OS X installer for FMS 16.
diff --git a/contrib/install-RESTfm.OSX/shared-functions b/contrib/install-RESTfm.OSX/shared-functions
index 2696242..4913da9 100644
--- a/contrib/install-RESTfm.OSX/shared-functions
+++ b/contrib/install-RESTfm.OSX/shared-functions
@@ -106,13 +106,13 @@ setup_Traps () {
 #   - that we are on a supported version of Mac OS X.
 #   - that we are not running on Mac OS X Server Edition.
 check_OSXVersion() {
-    local MSGPREFIX='Check Mac OS X version: '
+    local MSGPREFIX='Check macOS (Mac OS X) version: '
 
     # Ensure we have sw_vers, and we are Mac OS X.
     local PRODUCTNAME=''
     [ -x "`which sw_vers`" ] && PRODUCTNAME=`sw_vers -productName`
     if [ "$PRODUCTNAME" != 'Mac OS X' ]; then
-        log_failure_msg "$MSGPREFIX Mac OS X not detected"
+        log_failure_msg "$MSGPREFIX macOS (Mac OS X) not detected"
         exit 1
     fi
 
@@ -121,6 +121,9 @@ check_OSXVersion() {
     # Trim off any patch version, e.g. 10.10.1 -> 10.10
     OSXVERSION=`echo "${OSXVERSION}" | grep -Eo '^[0-9]+\.[0-9]+'`
     case "$OSXVERSION" in
+        "10.13")
+            log_success_msg "$MSGPREFIX $OSXVERSION High Sierra"
+            ;;
         "10.12")
             log_success_msg "$MSGPREFIX $OSXVERSION Sierra"
             ;;
diff --git a/lib/RESTfm/Diagnostics.php b/lib/RESTfm/Diagnostics.php
index befcf92..22a2dbe 100644
--- a/lib/RESTfm/Diagnostics.php
+++ b/lib/RESTfm/Diagnostics.php
@@ -751,7 +751,7 @@ private function _darwinFMS13AllowOverrideInstructions() {
      *  (Apple OSX)
      */
     private function _darwinFMS13InstallerInstructions() {
-        $s = "\nFileMaker Server 13/14/15/16 on Apple OSX instructions:\n\n";
+        $s = "\nFileMaker Server 13/14/15/16 on Apple macOS (OS X) instructions:\n\n";
 
         if (strcasecmp(dirname($this->_RESTfmDocumentRoot), '/Library/FileMaker Server/HTTPServer/htdocs') != 0) {
             $s .= '* Custom document root outside of FMS detected. Please contact Goya support: http://www.restfm.com/help' . "\n";
diff --git a/lib/RESTfm/Version.php b/lib/RESTfm/Version.php
index 82abefa..fbe4b46 100644
--- a/lib/RESTfm/Version.php
+++ b/lib/RESTfm/Version.php
@@ -23,7 +23,7 @@
  * Version static class to hold release version.
  */
 class Version {
-    private static $_release     = '5.0.0';
+    private static $_release     = '5.0.1';
     private static $_revision    = '%%REVISION%%';
     private static $_protocol    = '6';     // Bump this when REST API changes.