diff --git a/pyproject.toml b/pyproject.toml
index 3deaea7..0b77975 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "scalcs"
-version = "1.2.0"
+version = "1.3.0"
 description = "Pure-Python Q-matrix formalism for ion channel kinetics"
 authors = [
     { name = "Remigijus Lape", email = "remis.lp@gmail.com" },
diff --git a/scalcs/version.py b/scalcs/version.py
index bd00743..b636514 100644
--- a/scalcs/version.py
+++ b/scalcs/version.py
@@ -1,3 +1,3 @@
-__version__ = "1.2.0"
+__version__ = "1.3.0"
 version = __version__        # backward-compat alias
 full_version = __version__   # backward-compat alias