diff --git a/baselibs.conf b/baselibs.conf
index a6afa06..184c3de 100644
--- a/baselibs.conf
+++ b/baselibs.conf
@@ -1,6 +1,6 @@
 libfcitx-4_2_7
 	requires "fcitx = <version>"
-    obsoletes "libfcitx-<targettype> = <version>"
+    obsoletes "libfcitx-<targettype> < <version>"
     provides "libfcitx-<targettype> = <version>"
 	post "/sbin/ldconfig"
     postun "/sbin/ldconfig"
diff --git a/fcitx.changes b/fcitx.changes
index 8a34825..ad24a33 100644
--- a/fcitx.changes
+++ b/fcitx.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Fri Apr 26 23:57:32 UTC 2013 - i@marguerite.su
+
+- in baselibs.conf, obsoletes "libfcitx-<targettype> < <version>"
+  instead of "=".
+
 -------------------------------------------------------------------
 Thu Mar 28 18:28:49 UTC 2013 - i@marguerite.su