diff --git a/ibus-libpinyin.spec b/ibus-libpinyin.spec
index 96f2f96..592c830 100644
--- a/ibus-libpinyin.spec
+++ b/ibus-libpinyin.spec
@@ -25,7 +25,7 @@ Requires:   ibus >= 1.2.0
 Requires:   libpinyin-data >= 0.6.0
 
 Provides: ibus-pinyin = 1.5.0
-Obsoletes: ibus-pinyin < 1.5.0
+Obsoletes: ibus-pinyin < 1.4.0-17
 
 %description
 It includes a Chinese Pinyin input method and a Chinese ZhuYin (Bopomofo)