diff --git a/gradle.properties b/gradle.properties
index 75af7c7f11..1b2d6c4aa6 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -11,7 +11,7 @@
 # limitations under the License.
 #
 group=me.ahoo.cosid
-version=2.9.8
+version=2.9.9
 description=Universal, flexible, high-performance distributed ID generator.
 website=https://github.com/Ahoo-Wang/CosId
 issues=https://github.com/Ahoo-Wang/CosId/issues