diff --git a/README.rst b/README.rst
index 04cfefd9..bc0a7b83 100644
--- a/README.rst
+++ b/README.rst
@@ -2,7 +2,7 @@
 anesthetic: nested sampling post-processing
 ===========================================
 :Authors: Will Handley and Lukas Hergt
-:Version: 2.3.0
+:Version: 2.3.1
 :Homepage: https://github.com/handley-lab/anesthetic
 :Documentation: http://anesthetic.readthedocs.io/
 
diff --git a/anesthetic/_version.py b/anesthetic/_version.py
index 82190396..1c4ddd35 100644
--- a/anesthetic/_version.py
+++ b/anesthetic/_version.py
@@ -1 +1 @@
-__version__ = '2.3.0'
+__version__ = '2.3.1'
diff --git a/pyproject.toml b/pyproject.toml
index d8810c5c..bae21d34 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -33,7 +33,7 @@ requires-python = ">=3.8"
 dependencies = [
     "scipy",
     "numpy",
-    "pandas>=2.0.0",
+    "pandas~=2.0.0",
     "matplotlib>=3.6.1",
 ]
 classifiers = [