diff --git a/.github/workflows/buildutils.yml b/.github/workflows/buildutils.yml
index 50172dacc5..580d2af5ce 100644
--- a/.github/workflows/buildutils.yml
+++ b/.github/workflows/buildutils.yml
@@ -29,7 +29,7 @@ jobs:
 
       - name: Install dependencies
         run: |
-          python -m pip install -U "jupyterlab>=4.2.0,<4.3" hatch
+          python -m pip install -U "jupyterlab>=4.3.0a0,<4.4" hatch
           jlpm
           jlpm run build
 
@@ -79,6 +79,6 @@ jobs:
 
       - name: Install dependencies
         run: |
-          python -m pip install -U "jupyterlab>=4.2.0,<4.3" pip
+          python -m pip install -U "jupyterlab>=4.3.0a0,<4.4" pip
           jlpm
           jlpm run build
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 23b9b97bbf..d51a0562d8 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -44,7 +44,7 @@ repos:
         files: "^notebook"
         stages: [manual]
         args: ["--install-types", "--non-interactive"]
-        additional_dependencies: ["traitlets>=5.13", "tornado", "jupyter_server>=2.10", "jupyterlab_server>=2.25", "jupyterlab>=4.2.0,<4.3"]
+        additional_dependencies: ["traitlets>=5.13", "tornado", "jupyter_server>=2.10", "jupyterlab_server>=2.25", "jupyterlab>=4.3.0a0,<4.4"]
 
   - repo: https://github.com/pre-commit/pygrep-hooks
     rev: 'v1.10.0'
diff --git a/pyproject.toml b/pyproject.toml
index 42533f9c40..ba41996193 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,5 +1,5 @@
 [build-system]
-requires = ["hatchling>=1.11", "jupyterlab>=4.2.0,<4.3"]
+requires = ["hatchling>=1.11", "jupyterlab>=4.3.0a0,<4.4"]
 build-backend = "hatchling.build"
 
 [project]
@@ -32,7 +32,7 @@ classifiers = [
 ]
 dependencies = [
     "jupyter_server>=2.4.0,<3",
-    "jupyterlab>=4.2.0,<4.3",
+    "jupyterlab>=4.3.0a0,<4.4",
     "jupyterlab_server>=2.27.1,<3",
     "notebook_shim>=0.2,<0.3",
     "tornado>=6.2.0",
@@ -175,7 +175,7 @@ version-cmd = "jlpm run release:bump --force --skip-commit"
 
 [tool.jupyter-releaser.hooks]
 before-bump-version = [
-    "python -m pip install -U \"jupyterlab>=4.2.0,<4.3\"",
+    "python -m pip install -U \"jupyterlab>=4.3.0a0,<4.4\"",
     "jlpm",
     "jlpm run build:utils",
     "python -m pip install hatch"