diff --git a/.gitignore b/.gitignore
index 680f08e..c70ebd8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1 @@
-/liblangtag-0.6.3.tar.bz2
+/liblangtag-0.6.4.tar.bz2
diff --git a/0001-ro-MD-ro-to-get-make-check-to-succeed.patch b/0001-ro-MD-ro-to-get-make-check-to-succeed.patch
new file mode 100644
index 0000000..2e64634
--- /dev/null
+++ b/0001-ro-MD-ro-to-get-make-check-to-succeed.patch
@@ -0,0 +1,25 @@
+From f46641f735e8a22d4c2a2002d0b6b90ff7a664b3 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Caol=C3=A1n=20McNamara?= <caolanm@redhat.com>
+Date: Thu, 30 Jun 2022 10:19:18 +0100
+Subject: [PATCH] ro-MD -> ro to get make check to succeed
+
+---
+ tests/check-tag.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/tests/check-tag.c b/tests/check-tag.c
+index 99466e2..29e738b 100644
+--- a/tests/check-tag.c
++++ b/tests/check-tag.c
+@@ -197,7 +197,7 @@ TDEF (lt_tag_canonicalize) {
+ 	fail_unless(lt_tag_parse(t1, "mo", NULL), "should be valid langtag.");
+ 	s = lt_tag_canonicalize(t1, NULL);
+ 	fail_unless(s != NULL, "Unable to be canonicalize.");
+-	fail_unless(lt_strcmp0(s, "ro-MD") == 0, "Unexpected result to be canonicalized.");
++	fail_unless(lt_strcmp0(s, "ro") == 0, "Unexpected result to be canonicalized.");
+ 	free(s);
+ 
+ 	lt_tag_unref(t1);
+-- 
+2.36.1
+
diff --git a/liblangtag.spec b/liblangtag.spec
index 120184c..2275f1d 100644
--- a/liblangtag.spec
+++ b/liblangtag.spec
@@ -4,14 +4,15 @@
 %global soversion_gobject 0
 
 Name: liblangtag
-Version: 0.6.3
-Release: 9%{?dist}
+Version: 0.6.4
+Release: 1%{?dist}
 Summary: An interface library to access tags for identifying languages
 
 License: LGPLv3+ or MPLv2.0
 URL: http://tagoh.bitbucket.org/liblangtag/
 Source0: https://bitbucket.org/tagoh/%{name}/downloads/%{name}-%{version}.tar.bz2
 Patch0: liblangtag-noparallel-gir.patch
+Patch1: 0001-ro-MD-ro-to-get-make-check-to-succeed.patch
 
 Requires: %{name}-data = %{version}-%{release}
 
@@ -134,6 +135,10 @@ export LD_LIBRARY_PATH=`pwd`/liblangtag/.libs:`pwd`/liblangtag-gobject/.libs${LD
 %{_datadir}/gtk-doc/html/%{name}
 
 %changelog
+* Thu Jun 30 2022 Caolán McNamara <caolanm@redhat.com> - 0.6.4-1
+- Resolves: rhbz#2102551 latest available version
+- fix make check by changing canonicalization test of "mo" from "ro-MD" to "ro"
+
 * Thu Jan 20 2022 Fedora Release Engineering <releng@fedoraproject.org> - 0.6.3-9
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_36_Mass_Rebuild
 
diff --git a/sources b/sources
index c57f562..fcd0463 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (liblangtag-0.6.3.tar.bz2) = 3dcfc20704dfaff05aeecdeef74fa81639fb70f930ebc0895fe4707ecd1d5b6221fe889449772811924d0c38329977c9d5fc751c3accbc272834b29c461f1fcf
+SHA512 (liblangtag-0.6.4.tar.bz2) = 6c6dd3e6b0fc8d6f10cafd74112cbaf2a2342a88a908ad2f7ae759b3f5fb0cf6d788504c1de072e9ef019f2f5a284daeb2d2393036b6b402c5bc87f32b55f271