diff --git a/.files b/.files
index 9abe1f2..7bba08a 100644
Binary files a/.files and b/.files differ
diff --git a/.rev b/.rev
index f1b9c9a..d7988b8 100644
--- a/.rev
+++ b/.rev
@@ -588,4 +588,12 @@ You added ec_access.c with a GPL-2.0 (only) license. Now the spec file has to be
     <comment></comment>
     <requestid>971849</requestid>
   </revision>
+  <revision rev="71" vrev="2">
+    <srcmd5>2bd86c027deb4f8454c21d6d1ff0dd96</srcmd5>
+    <version>20220331</version>
+    <time>1650996912</time>
+    <user>dimstar_suse</user>
+    <comment></comment>
+    <requestid>972528</requestid>
+  </revision>
 </revisionlist>
diff --git a/acpica.changes b/acpica.changes
index 8f82722..71ed8ce 100644
--- a/acpica.changes
+++ b/acpica.changes
@@ -1,4 +1,15 @@
 -------------------------------------------------------------------
+Thu Apr 21 21:02:11 UTC 2022 - Ferdinand Thiessen <rpm@fthiessen.de>
+
+- Update bundled wmidump to latest upstream 2021-10-11:
+  * Add support for '//' comments
+  * Print object_id or notify_id based on ACPI_WMI_EVENT flag
+    object_id and notify_id member are in one union. It depends on
+    ACPI_WMI_EVENT flag which member is stored in this union.
+    So print only one member based on ACPI_WMI_EVENT flag.
+- Add comment about origin of the wmidump sources
+
+-------------------------------------------------------------------
 Wed Apr 20 20:02:38 UTC 2022 - Dirk Müller <dmueller@suse.com>
 
 - update to 20220331:
diff --git a/acpica.spec b/acpica.spec
index 184cc7b..20f15b6 100644
--- a/acpica.spec
+++ b/acpica.spec
@@ -29,7 +29,8 @@ Source:         https://acpica.org/sites/acpica/files/%{src_dir}.tar.gz
 Source1:        ec_access.c
 Source2:        acpi_genl.tar.bz2
 Source3:        acpi_validate
-Source4:        wmidump.tar.bz2
+# https://xf.iksaif.net/dev/wmidump.html
+Source4:        wmidump-20211011.tar.xz
 Patch1:         acpica-no-compiletime.patch
 Patch2:         wmidump_add_she_bang.patch
 Patch3:         do_not_use_build_date_and_time.patch
@@ -85,7 +86,7 @@ install -Dm 755 ec_access %{buildroot}%{_sbindir}/ec_access
 
 install -Dm 755 wmidump/wmidump %{buildroot}%{_bindir}/wmidump
 install -Dm 755 wmidump/wmixtract.py %{buildroot}%{_bindir}/wmixtract
-install -Dm 644 wmidump/README %{buildroot}/%{_docdir}/%{name}/README_wmidump
+install -Dm 644 wmidump/README.md %{buildroot}/%{_docdir}/%{name}/README_wmidump.md
 
 install -Dm 755 acpi_genl/acpi_genl %{buildroot}%{_sbindir}/acpi_genl
 install -Dm 644 acpi_genl/README %{buildroot}/%{_docdir}/%{name}/README_acpi_genl
diff --git a/wmidump-20211011.tar.xz b/wmidump-20211011.tar.xz
new file mode 120000
index 0000000..525f883
--- /dev/null
+++ b/wmidump-20211011.tar.xz
@@ -0,0 +1 @@
+/ipfs/bafkreigzndphd66scv3r4sbcqncgo3g32uxjnbp7vsxygbnq62pez6gzxa
\ No newline at end of file
diff --git a/wmidump.tar.bz2 b/wmidump.tar.bz2
deleted file mode 120000
index ee62037..0000000
--- a/wmidump.tar.bz2
+++ /dev/null
@@ -1 +0,0 @@
-/ipfs/bafkreib2ylo7uzplsiufktg3lc5wkiju3hsvqco7opmhcabhhh6qqad63q
\ No newline at end of file