diff --git a/installer/mac/preinstall.sh b/installer/mac/preinstall.sh
new file mode 100644
index 00000000..b722db38
--- /dev/null
+++ b/installer/mac/preinstall.sh
@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+sudo killall Symphony
+sudo rm -rf /Applications/Symphony.app
\ No newline at end of file
diff --git a/installer/mac/symphony-mac-packager.pkgproj b/installer/mac/symphony-mac-packager.pkgproj
index dd617eda..9d135dad 100644
--- a/installer/mac/symphony-mac-packager.pkgproj
+++ b/installer/mac/symphony-mac-packager.pkgproj
@@ -450,6 +450,13 @@
 					<key>PATH_TYPE</key>
 					<integer>1</integer>
 				</dict>
+				<key>PREINSTALL_PATH</key>
+				<dict>
+					<key>PATH</key>
+					<string>preinstall.sh</string>
+					<key>PATH_TYPE</key>
+					<integer>1</integer>
+				</dict>
 				<key>RESOURCES</key>
 				<array/>
 			</dict>