diff --git a/CHANGELOG.md b/CHANGELOG.md
index a33e7d1..1372a0f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,10 @@
 
 > please add your unreleased change here.
 
+## 20240716 - 0.5.0b0
+
+- [DOC] add docs for secretflow_serving_lib
+
 ## 20240625 - 0.4.0b0
 
 - [Feature] `MERGE_Y` operator support `EXP_TAYLOR` link function
diff --git a/python_lib/secretflow_serving_lib/version.py b/python_lib/secretflow_serving_lib/version.py
index 835b2ef..4796ce0 100644
--- a/python_lib/secretflow_serving_lib/version.py
+++ b/python_lib/secretflow_serving_lib/version.py
@@ -13,4 +13,4 @@
 # limitations under the License.
 
 
-__version__ = "0.5.0.dev$$DATE$$"
+__version__ = "0.5.0b0"
diff --git a/version.txt b/version.txt
index 835b2ef..4796ce0 100644
--- a/version.txt
+++ b/version.txt
@@ -13,4 +13,4 @@
 # limitations under the License.
 
 
-__version__ = "0.5.0.dev$$DATE$$"
+__version__ = "0.5.0b0"