diff --git a/meta-oe/recipes-connectivity/modemmanager/files/0001-core-switch-bash-shell-scripts-to-use-bin-sh-for-use.patch b/meta-oe/recipes-connectivity/modemmanager/files/0001-core-switch-bash-shell-scripts-to-use-bin-sh-for-use.patch
deleted file mode 100644
index 914760512a7..00000000000
--- a/meta-oe/recipes-connectivity/modemmanager/files/0001-core-switch-bash-shell-scripts-to-use-bin-sh-for-use.patch
+++ /dev/null
@@ -1,70 +0,0 @@
-From 35173fa04d0116ba30a86dc1a19f859f2be14a24 Mon Sep 17 00:00:00 2001
-From: "Bruce A. Johnson" <waterfordtrack@gmail.com>
-Date: Wed, 22 Dec 2021 14:24:02 -0500
-Subject: [PATCH] core: switch bash shell scripts to use /bin/sh for use
- w/Busybox.
-
-Fixes https://gitlab.freedesktop.org/mobile-broadband/ModemManager/-/issues/483
-
-%% original patch: 0001-core-switch-bash-shell-scripts-to-use-bin-sh-for-use.patch
----
- data/dispatcher-fcc-unlock/105b | 2 +-
- data/dispatcher-fcc-unlock/1199 | 2 +-
- data/dispatcher-fcc-unlock/1eac | 2 +-
- test/mmcli-test-sms             | 2 +-
- tools/tests/test-wrapper.sh.in  | 2 +-
- 5 files changed, 5 insertions(+), 5 deletions(-)
-
-diff --git a/data/dispatcher-fcc-unlock/105b b/data/dispatcher-fcc-unlock/105b
-index 444bd51f..772c90f4 100644
---- a/data/dispatcher-fcc-unlock/105b
-+++ b/data/dispatcher-fcc-unlock/105b
-@@ -1,4 +1,4 @@
--#!/bin/bash
-+#!/bin/sh
- 
- # SPDX-License-Identifier: CC0-1.0
- # 2021 Aleksander Morgado <aleksander@aleksander.es>
-diff --git a/data/dispatcher-fcc-unlock/1199 b/data/dispatcher-fcc-unlock/1199
-index 83ab2c9e..6dbf8d1b 100644
---- a/data/dispatcher-fcc-unlock/1199
-+++ b/data/dispatcher-fcc-unlock/1199
-@@ -1,4 +1,4 @@
--#!/bin/bash
-+#!/bin/sh
- 
- # SPDX-License-Identifier: CC0-1.0
- # 2021 Aleksander Morgado <aleksander@aleksander.es>
-diff --git a/data/dispatcher-fcc-unlock/1eac b/data/dispatcher-fcc-unlock/1eac
-index 1a048dc8..44ce46d7 100644
---- a/data/dispatcher-fcc-unlock/1eac
-+++ b/data/dispatcher-fcc-unlock/1eac
-@@ -1,4 +1,4 @@
--#!/bin/bash
-+#!/bin/sh
- 
- # SPDX-License-Identifier: CC0-1.0
- # 2021 Aleksander Morgado <aleksander@aleksander.es>
-diff --git a/test/mmcli-test-sms b/test/mmcli-test-sms
-index 18e0a7b4..7136ee0d 100755
---- a/test/mmcli-test-sms
-+++ b/test/mmcli-test-sms
-@@ -1,4 +1,4 @@
--#!/bin/bash
-+#!/bin/sh
- 
- print_usage () {
-     echo "usage: $0 [MODEM INDEX] [all|ucs2|gsm7|data] [NUMBER]"
-diff --git a/tools/tests/test-wrapper.sh.in b/tools/tests/test-wrapper.sh.in
-index d64ea4cb..fcdb56de 100644
---- a/tools/tests/test-wrapper.sh.in
-+++ b/tools/tests/test-wrapper.sh.in
-@@ -1,4 +1,4 @@
--#!/bin/bash
-+#!/bin/sh
- 
- # For debugging behavior of test-modemmanager-service.py, you can modify
- # this line to add --log-file option
--- 
-2.35.3
-
diff --git a/meta-oe/recipes-connectivity/modemmanager/modemmanager_1.18.12.bb b/meta-oe/recipes-connectivity/modemmanager/modemmanager_1.20.4.bb
similarity index 87%
rename from meta-oe/recipes-connectivity/modemmanager/modemmanager_1.18.12.bb
rename to meta-oe/recipes-connectivity/modemmanager/modemmanager_1.20.4.bb
index b06e3ebdabd..fe44ef965ef 100644
--- a/meta-oe/recipes-connectivity/modemmanager/modemmanager_1.18.12.bb
+++ b/meta-oe/recipes-connectivity/modemmanager/modemmanager_1.20.4.bb
@@ -12,13 +12,8 @@ inherit gnomebase gettext systemd gobject-introspection bash-completion
 
 DEPENDS = "glib-2.0 libgudev libxslt-native dbus"
 
-SRCREV ?= "c234bd55c9d9618c1478b5e80aaf4b8f965be181"
-
-# Patch 0001 will be in ModemManager > 1.19
-SRC_URI = " \
-    git://gitlab.freedesktop.org/mobile-broadband/ModemManager.git;protocol=https;branch=mm-1-18 \
-    file://0001-core-switch-bash-shell-scripts-to-use-bin-sh-for-use.patch \
-"
+SRCREV = "6926459500fd927e7cceb589a9e4113d4edb04e6"
+SRC_URI = "git://gitlab.freedesktop.org/mobile-broadband/ModemManager.git;protocol=https;branch=mm-1-20"
 
 S = "${WORKDIR}/git"