diff --git a/thunderbird-91.5.1-libwayland-1.20.0.patch b/thunderbird-91.5.1-libwayland-1.20.0.patch
new file mode 100644
index 0000000..bcd5e25
--- /dev/null
+++ b/thunderbird-91.5.1-libwayland-1.20.0.patch
@@ -0,0 +1,28 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Kevin Daudt <kdaudt@alpinelinux.org>
+Date: Sun, 12 Dec 2021 13:38:48 +0000
+Subject: [PATCH] Bug 1745560 - Add missing stub for wl_proxy_marshal_flags,
+ r=stransky
+
+Firefox fails to build against wayland 1.20 because this symbol is missing
+
+Differential Revision: https://phabricator.services.mozilla.com/D133583
+---
+ widget/gtk/mozwayland/mozwayland.c | 7 +++++++
+ 1 file changed, 7 insertions(+)
+
+diff --git a/widget/gtk/mozwayland/mozwayland.c b/widget/gtk/mozwayland/mozwayland.c
+index 7a448e6321e2..1a86468b4f3d 100644
+--- a/widget/gtk/mozwayland/mozwayland.c
++++ b/widget/gtk/mozwayland/mozwayland.c
+@@ -200,3 +200,10 @@ MOZ_EXPORT int wl_list_empty(const struct wl_list* list) { return -1; }
+ 
+ MOZ_EXPORT void wl_list_insert_list(struct wl_list* list,
+                                     struct wl_list* other) {}
++
++MOZ_EXPORT struct wl_proxy* wl_proxy_marshal_flags(
++    struct wl_proxy* proxy, uint32_t opcode,
++    const struct wl_interface* interface, uint32_t version, uint32_t flags,
++    ...) {
++  return NULL;
++}
diff --git a/thunderbird.spec b/thunderbird.spec
index f2db4ad..4a68531 100644
--- a/thunderbird.spec
+++ b/thunderbird.spec
@@ -9,7 +9,7 @@
 #%define        source_dir                  comm-esr%(echo %version | cut -d. -f1)
 
 Name:          thunderbird
-Version:       91.4.1
+Version:       91.5.1
 Release:       1mamba
 Summary:       Mozilla Thunderbird email, RSS, and newsgroup client
 Group:         Graphical Desktop/Applications/Internet
@@ -27,6 +27,7 @@ Source6:       thunderbird-distribution.ini
 Patch14:       thunderbird-78.8.1-rust-1.48.patch
 Patch15:       thunderbird-78.8.1-fix-passing-system-bzip2-ldflags.patch
 Patch16:       thunderbird-91.4.1-python-setuptools-60.0.4.patch
+Patch17:       thunderbird-91.5.1-libwayland-1.20.0.patch
 License:       GPL,MPL 1.1,LGPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: xulrunner-devel
@@ -208,6 +209,7 @@ This package contains the %{2} language support files for Thunderbird.\
 #%patch14 -p1
 #%patch15 -p1
 %patch16 -p1
+%patch17 -p1 -b .libwayland-1.20.0
 
 rm -f .mozconfig
 cat << EOF > .mozconfig
@@ -446,6 +448,9 @@ fi
 %{tbdir}/removed-files
 
 %changelog
+* Thu Feb 03 2022 Automatic Build System <autodist@mambasoft.it> 91.5.1-1mamba
+- automatic version update by autodist
+
 * Tue Dec 21 2021 Automatic Build System <autodist@mambasoft.it> 91.4.1-1mamba
 - automatic version update by autodist