diff --git a/docs/source/conf.py b/docs/source/conf.py
index 1338bd3b6b..fbcf0e834e 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -107,7 +107,7 @@
 # |version| and |release|, also used in various other places throughout the
 # built documents.
 #
-__version__ = "1.23.5"
+__version__ = "1.24.0.dev0"
 # The short X.Y version.
 version_parsed = parse_version(__version__)
 version = f"{version_parsed.major}.{version_parsed.minor}"
diff --git a/jupyter_server/_version.py b/jupyter_server/_version.py
index d03578b52e..da555b140b 100644
--- a/jupyter_server/_version.py
+++ b/jupyter_server/_version.py
@@ -2,5 +2,5 @@
 store the current version info of the server.
 
 """
-version_info = (1, 23, 5, "", "")
+version_info = (1, 24, 0, ".dev", "0")
 __version__ = ".".join(map(str, version_info[:3])) + "".join(version_info[3:])
diff --git a/pyproject.toml b/pyproject.toml
index 84d7a14ff6..1db471f43e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -35,7 +35,7 @@ skip = ["check-links"]
 post-version-spec = "dev"
 
 [tool.tbump.version]
-current = "1.23.5"
+current = "1.24.0.dev0"
 regex = '''
   (?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)
   ((?P<channel>a|b|rc|.dev)(?P<release>\d+))?