diff --git a/install.sh b/install.sh
index f92c170..7afd0fc 100644
--- a/install.sh
+++ b/install.sh
@@ -465,7 +465,8 @@ fi
 if [ $DOSEMU = "Yes" ]; then
 msg_info "Installing DosEmu2 Dependencies for ${APP}"
 pushd /usr/local/src/mystic &>/dev/null
-echo "deb [trusted=yes] https://ppa.launchpadcontent.net/dosemu2/ppa/ubuntu $DIST main" | tee /etc/apt/sources.list.d/dosemu2.list &>/dev/null
+curl 'https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x6d9cd73b401a130336ed0a56ebe1b5ded2ad45d6' | tee /etc/apt/trusted.gpg.d/code.launchpad.net-dosemu2.asc &>/dev/null
+echo "deb https://ppa.launchpadcontent.net/dosemu2/ppa/ubuntu $DIST main" | tee /etc/apt/sources.list.d/dosemu2.list &>/dev/null
 apt update &>/dev/null
 apt install -y dosemu2 &>/dev/null
 apt install -y install-otherdos &>/dev/null