diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 04d81ede..3aa41c59 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Change Log
 
+## 0.13.1
+
+- test: cover `on_job_polling`
+- fix: update envs recursively for subclasses
+- test: make sure class envs kept intact when subclassed
+
 ## 0.13.0
 
 - deps: bump xqute to 0.3.1 and liquidpy to 0.8.2
diff --git a/pipen/version.py b/pipen/version.py
index f2042df0..922aa1e9 100644
--- a/pipen/version.py
+++ b/pipen/version.py
@@ -1,3 +1,3 @@
 """Provide version of pipen"""
 
-__version__ = "0.13.0"
+__version__ = "0.13.1"
diff --git a/pyproject.toml b/pyproject.toml
index 52e05ecf..11bd7d57 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "poetry.masonry.api"
 
 [tool.poetry]
 name = "pipen"
-version = "0.13.0"
+version = "0.13.1"
 description = "A pipeline framework for python"
 authors = [ "pwwang <pwwang@pwwang.com>",]
 license = "MIT"