diff --git a/glibmm-2.66.2.tar.xz b/glibmm-2.66.2.tar.xz
deleted file mode 100644
index ff838bb..0000000
--- a/glibmm-2.66.2.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:b2a4cd7b9ae987794cbb5a1becc10cecb65182b9bb841868625d6bbb123edb1d
-size 7603104
diff --git a/glibmm-2.66.4.tar.xz b/glibmm-2.66.4.tar.xz
new file mode 100644
index 0000000..9b4da1c
--- /dev/null
+++ b/glibmm-2.66.4.tar.xz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:199ace5682d81b15a1d565480b4a950682f2db6402c8aa5dd7217d71edff81d5
+size 7606108
diff --git a/glibmm2_4.changes b/glibmm2_4.changes
index f5277c7..a19d69f 100644
--- a/glibmm2_4.changes
+++ b/glibmm2_4.changes
@@ -1,3 +1,11 @@
+-------------------------------------------------------------------
+Fri Jun 10 07:24:17 UTC 2022 - QK ZHU <qkzhu@suse.com>
+
+- Update to version 2.66.4:
+  + Glib: ustring_Iterator: Don't declare copy constructor =default.
+    The fix in the 2.66.3 release broke ABI.
+    (Kjell Ahlstedt) Issue #98 (Scotty Trees)
+
 -------------------------------------------------------------------
 Thu Oct  7 05:34:30 UTC 2021 - Bjørn Lie <bjorn.lie@gmail.com>
 
diff --git a/glibmm2_4.spec b/glibmm2_4.spec
index 4e96dd0..1f5d0f3 100644
--- a/glibmm2_4.spec
+++ b/glibmm2_4.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package glibmm2_4
 #
-# Copyright (c) 2021 SUSE LLC
+# Copyright (c) 2022 SUSE LLC
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -20,7 +20,7 @@
 %define so_ver -2_4-1
 %define _name glibmm
 Name:           glibmm2_4
-Version:        2.66.2
+Version:        2.66.4
 Release:        0
 Summary:        C++ Interface for Glib
 License:        LGPL-2.1-or-later