diff --git a/CHANGELOG.md b/CHANGELOG.md
index 25dbdd73..8a6bcbf9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
-## [Unreleased]
+
+## Unreleased 
+
+## [4.0.0 - 2024-03-04]
 ### Added
 - added `TileScopePack.requirement_and_row_and_col_placements`
 - `AssumptionAndPointJumpingFactory` which adds rules where requirements and/or
diff --git a/setup.py b/setup.py
index 50e6d8b3..fe3f7709 100755
--- a/setup.py
+++ b/setup.py
@@ -35,7 +35,7 @@ def get_version(rel_path):
     long_description=read("README.rst"),
     install_requires=[
         "comb-spec-searcher==4.2.0",
-        "permuta==2.2.0",
+        "permuta==2.3.0",
     ],
     python_requires=">=3.8",
     include_package_data=True,
diff --git a/tilings/__init__.py b/tilings/__init__.py
index e0ff2d7b..f31c82f4 100644
--- a/tilings/__init__.py
+++ b/tilings/__init__.py
@@ -2,6 +2,6 @@
 from tilings.griddedperm import GriddedPerm
 from tilings.tiling import Tiling
 
-__version__ = "3.1.0"
+__version__ = "4.0.0"
 
 __all__ = ["GriddedPerm", "Tiling", "TrackingAssumption"]