diff --git a/CHANGES.rst b/CHANGES.rst
index 7af913a8..2ab31c56 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,7 +1,7 @@
 Changelog of threedigrid-builder
 ================================
 
-1.13.1 (unreleased)
+1.13.1 (2024-02-19)
 -------------------
 
 - Remove python 3.12 from wheel build and set minimum python version to 3.7. 
diff --git a/threedigrid_builder/__init__.py b/threedigrid_builder/__init__.py
index 3388c9ec..eeb187b4 100644
--- a/threedigrid_builder/__init__.py
+++ b/threedigrid_builder/__init__.py
@@ -2,5 +2,5 @@
 from .exceptions import *  # NOQA
 
 # fmt: off
-__version__ = '1.13.1.dev0'
+__version__ = '1.13.1'
 # fmt: on