Add F-Droid

diff --git a/update.sh b/update.sh
index 967edf7..ff6d877 100755
--- a/update.sh
+++ b/update.sh
@@ -69,6 +69,8 @@
 downloadFromFdroid com.artifex.mupdf.viewer.app
 # Aurora App Store
 downloadFromFdroid com.aurora.store
+# F-Droid App Store
+downloadFromFdroid org.fdroid.fdroid
 #Mail client
 downloadFromFdroid com.fsck.k9 "Email"
 #Calendar/Contacts sync