diff --git a/recipe/meta.yaml b/recipe/meta.yaml
index dc35cf5..0889550 100644
--- a/recipe/meta.yaml
+++ b/recipe/meta.yaml
@@ -12,20 +12,20 @@ source:
 build:
   noarch: python
   script: {{ PYTHON }} -m pip install . -vv
-  number: 0
+  number: 1
 
 requirements:
   host:
     - python >=3.8
     - pip
     - jupyterlab >=3,<4
-    - empack >=3.1,<4
+    - empack >=3.1,<6
     - hatchling
     - hatch-jupyter-builder
     - hatch-nodejs-version
   run:
     - python >=3.8
-    - empack >=4.0.2,<5
+    - empack >=4.0.2,<6
     - traitlets
     - jupyterlite-core >=0.1,<0.5
     - pyyaml
@@ -52,3 +52,4 @@ about:
 extra:
   recipe-maintainers:
     - martinRenou
+    - trungleduc