diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index 69fb732..5edccfd 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -23,7 +23,7 @@ on:
 
 jobs:
   build-release:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-latest
 
     steps:
       - uses: actions/checkout@v4
diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 1d4b790..5ffd468 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -25,23 +25,19 @@ env:
 
 jobs:
   test:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-latest
     timeout-minutes: 10
 
     strategy:
       fail-fast: false
       matrix:
         include:
-          - python-version: "3.8"
-            pip-install-spec: "jupyterhub==2.3.1 sqlalchemy==1.*"
           - python-version: "3.9"
-            pip-install-spec: "jupyterhub==3.*"
-          - python-version: "3.10"
             pip-install-spec: "jupyterhub==4.*"
-          - python-version: "3.11"
-            pip-install-spec: "jupyterhub==5.*"
           - python-version: "3.12"
-            pip-install-spec: "jupyterhub"
+            pip-install-spec: "jupyterhub==5.*"
+          - python-version: "3.x"
+            pip-install-spec: "--pre jupyterhub"
 
     steps:
       - uses: actions/checkout@v4
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index e8d0cfe..06a7a76 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -15,7 +15,7 @@ repos:
     hooks:
       - id: pyupgrade
         args:
-          - --py38-plus
+          - --py39-plus
 
   # Autoformat: Python code
   - repo: https://github.com/PyCQA/autoflake
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 56c2127..676ce8c 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -9,8 +9,6 @@ This guide was adapted from the [contributing guide in the main `jupyterhub` rep
 
 ## Setting up a development environment
 
-JupyterHub requires Python >= 3.7.
-
 As a Python project, a development install of JupyterHub follows standard practices for installation and testing.
 
 Note: if you have Docker installed locally, you can run all of the subsequent commands inside of a container after you run the following initial commands:
diff --git a/ldapauthenticator/__init__.py b/ldapauthenticator/__init__.py
index 99008a7..cf2752e 100644
--- a/ldapauthenticator/__init__.py
+++ b/ldapauthenticator/__init__.py
@@ -3,4 +3,4 @@
 # __version__ should be updated using tbump, based on configuration in
 # pyproject.toml, according to instructions in RELEASE.md.
 #
-__version__ = "1.3.3.dev"
+__version__ = "2.0.0.dev"
diff --git a/pyproject.toml b/pyproject.toml
index 1d9e06f..a8605bc 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,11 +25,10 @@ profile = "black"
 # target-version should be all supported versions, see
 # https://github.com/psf/black/issues/751#issuecomment-473066811
 target_version = [
-    "py37",
-    "py38",
     "py39",
     "py310",
     "py311",
+    "py312",
 ]
 
 
@@ -67,7 +66,7 @@ omit = [
 github_url = "https://github.com/jupyterhub/systemdspawner"
 
 [tool.tbump.version]
-current = "1.3.3.dev"
+current = "2.0.0.dev"
 regex = '''
     (?P<major>\d+)
     \.
diff --git a/setup.py b/setup.py
index 8b9d12f..f4d899a 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@
 
 setup(
     name="jupyterhub-ldapauthenticator",
-    version="1.3.3.dev",
+    version="2.0.0.dev",
     description="LDAP Authenticator for JupyterHub",
     long_description=open("README.md").read(),
     long_description_content_type="text/markdown",
@@ -11,9 +11,9 @@
     author_email="yuvipanda@riseup.net",
     license="3 Clause BSD",
     packages=["ldapauthenticator"],
-    python_requires=">=3.7",
+    python_requires=">=3.9",
     install_requires=[
-        "jupyterhub",
+        "jupyterhub>=4.1.6",
         "ldap3",
         "tornado",
         "traitlets",