diff --git a/nbclient/_version.py b/nbclient/_version.py
index fe839629..3c0d7d2c 100644
--- a/nbclient/_version.py
+++ b/nbclient/_version.py
@@ -1,7 +1,7 @@
 import re
 from typing import List, Union
 
-__version__ = "0.5.11"
+__version__ = "0.5.12"
 
 # Build up version_info tuple for backwards compatibility
 pattern = r'(?P<major>\d+).(?P<minor>\d+).(?P<patch>\d+)(?P<rest>.*)'
diff --git a/pyproject.toml b/pyproject.toml
index 1af82893..77b52db1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -53,7 +53,7 @@ skip = ["check-links"]
 ignore = [".mailmap", "*.yml", "*.yaml"]
 
 [tool.tbump.version]
-current = "0.5.11"
+current = "0.5.12"
 regex = '''
   (?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)
   ((?P<channel>a|b|rc|.dev)(?P<release>\d+))?