diff -uNr apt-2.1.11/cmdline/apt-key.in apt-2.1.11.mod/cmdline/apt-key.in
--- apt-2.1.11/cmdline/apt-key.in	2020-11-05 15:59:00.521530818 +0200
+++ apt-2.1.11.mod/cmdline/apt-key.in	2020-11-05 16:12:58.999142102 +0200
@@ -84,7 +84,7 @@
 }
 
 requires_root() {
-	if [ "$(id -u)" -ne 0 ]; then
+	if [ ! -d "@TERMUX_PREFIX@" ] && [ "$(id -u)" -ne 0 ]; then
 		apt_error "This command can only be used by root."
 		exit 1
 	fi