diff --git a/docs/source/conf.py b/docs/source/conf.py
index 9090379600..5392cbdc47 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -108,7 +108,7 @@
 # |version| and |release|, also used in various other places throughout the
 # built documents.
 #
-__version__ = "2.1.0.dev0"
+__version__ = "2.0.0b1"
 # 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 803eab636a..a45cefec8a 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 = (2, 1, 0, ".dev", "0")
+version_info = (2, 0, 0, "b", "1")
 __version__ = ".".join(map(str, version_info[:3])) + "".join(version_info[3:])
diff --git a/pyproject.toml b/pyproject.toml
index a5d6ad5289..3f2f9f21f1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "jupyter_server"
-version = "2.1.0.dev0"
+version = "2.0.0b1"
 readme = "README.md"
 license = { file = "COPYING.md" }
 description = "The backend—i.e. core services, APIs, and REST endpoints—to Jupyter web applications."
@@ -120,7 +120,7 @@ post-version-spec = "dev"
 pydist_resource_paths = ["jupyter_server/static/style/bootstrap.min.css", "jupyter_server/static/style/bootstrap-theme.min.css"]
 
 [tool.tbump.version]
-current = "2.1.0.dev0"
+current = "2.0.0b1"
 regex = '''
   (?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)
   ((?P<channel>a|b|rc|.dev)(?P<release>\d+))?