diff --git a/tools/linux_packaging/stage2.run b/tools/linux_packaging/stage2.run
index d43e86edd4..6af5b34181 100755
--- a/tools/linux_packaging/stage2.run
+++ b/tools/linux_packaging/stage2.run
@@ -159,6 +159,8 @@ if [ "$(id -u)" != "0" ]; then
 			exit 1
 		fi
 		exit
+	else
+		sudo -k # make sudo forget about cached credentials
 	fi
 
 	if ! sudo date;
diff --git a/tools/linux_packaging/uninstall.sh.in b/tools/linux_packaging/uninstall.sh.in
index 795c5d317d..c1d6cf561e 100644
--- a/tools/linux_packaging/uninstall.sh.in
+++ b/tools/linux_packaging/uninstall.sh.in
@@ -67,6 +67,8 @@ if [ "$(id -u)" != "0" ]; then
 			exit 1
 		fi
 		exit
+	else
+		sudo -k # make sudo forget about cached credentials
 	fi
 
 	if ! sudo date;