diff --git a/jsc_custom/_version.py b/jsc_custom/_version.py
index e5d9944f5183af16baef2985ff58505e5f6665ef..acc972ada4137006ed036e861fee298a8734e5a3 100644
--- a/jsc_custom/_version.py
+++ b/jsc_custom/_version.py
@@ -1,4 +1,4 @@
 # __version__ should be updated using tbump, based on configuration in
 # pyproject.toml, according to instructions in RELEASE.md.
 #
-__version__ = "0.12.12"
+__version__ = "0.12.13"
diff --git a/pyproject.toml b/pyproject.toml
index d5c7f8d45797775841ee486cdd034fe870734e9b..b3fd3bf0f3fc7b3d6648cd3c97120fa5448bf0ca 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -56,7 +56,7 @@ profile = "black"
 github_url = "https://github.com/kreuzert/jupyter-jsc-custom"
 
 [tool.tbump.version]
-current = "0.12.12"
+current = "0.12.13"
 regex = '''
   (?P<major>\d+)
   \.