diff --git a/ebcc/__init__.py b/ebcc/__init__.py
index cce502d3..4f0c0654 100644
--- a/ebcc/__init__.py
+++ b/ebcc/__init__.py
@@ -34,7 +34,7 @@
 >>> ccsd.kernel()
 """
 
-__version__ = "1.3.0"
+__version__ = "1.3.1"
 
 import logging
 import os
diff --git a/pyproject.toml b/pyproject.toml
index b4d8edc4..7c64970d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "ebcc"
-version = "1.3.0"
+version = "1.3.1"
 description = "Coupled cluster calculations on electron-boson systems"
 keywords = [
     "quantum", "chemistry",