diff --git a/CONTRIBUTING.rst b/CONTRIBUTING.rst
deleted file mode 120000
index 7c5f320..0000000
--- a/CONTRIBUTING.rst
+++ /dev/null
@@ -1 +0,0 @@
-docs/contributing.rst
\ No newline at end of file
diff --git a/CONTRIBUTING.rst b/CONTRIBUTING.rst
new file mode 100644
index 0000000..31f4de2
--- /dev/null
+++ b/CONTRIBUTING.rst
@@ -0,0 +1,5 @@
+========================
+Contributing to Tianshou
+========================
+
+Please refer to https://tianshou.readthedocs.io/en/latest/contributing.html 
diff --git a/docs/contributing.rst b/docs/contributing.rst
index 1424546..519ebdc 100644
--- a/docs/contributing.rst
+++ b/docs/contributing.rst
@@ -1,6 +1,6 @@
-============
-Contributing
-============
+========================
+Contributing to Tianshou
+========================
 
 Install Develop Version
 =======================
diff --git a/tianshou/__init__.py b/tianshou/__init__.py
index bef80b5..8637643 100644
--- a/tianshou/__init__.py
+++ b/tianshou/__init__.py
@@ -1,7 +1,7 @@
 from tianshou import data, env, utils, policy, trainer, \
     exploration
 
-__version__ = '0.2.2'
+__version__ = '0.2.3'
 __all__ = [
     'env',
     'data',