diff --git a/doc/changelog.md b/doc/changelog.md
index d0712f95..fe003fc6 100644
--- a/doc/changelog.md
+++ b/doc/changelog.md
@@ -3,7 +3,7 @@
 ## 3.2 [unreleased]
 * drop support for Python 2.7
 
-## 3.1.3 [unreleased]
+## 3.1.3
 
 ### Added
 * [#120](https://github.com/stlehmann/pyads/pull/120) Allow to write ctypes directly
diff --git a/pyads/__init__.py b/pyads/__init__.py
index c9732254..f6369da3 100644
--- a/pyads/__init__.py
+++ b/pyads/__init__.py
@@ -42,4 +42,4 @@
 from .constants import ADSTRANS_NOTRANS, ADSTRANS_CLIENTCYCLE, \
     ADSTRANS_CLIENT1REQ, ADSTRANS_SERVERCYCLE, ADSTRANS_SERVERONCHA
 
-__version__ = '3.1.2'
+__version__ = '3.1.3'