diff --git a/recipe/meta.yaml b/recipe/meta.yaml
index 90011b2..fa0d19b 100644
--- a/recipe/meta.yaml
+++ b/recipe/meta.yaml
@@ -8,7 +8,7 @@ source:
   url: https://pypi.io/packages/source/j/jupyterlab_widgets/jupyterlab_widgets-{{ version }}.tar.gz
   sha256: c3a50ed5bf528a0c7a869096503af54702f86dda1db469aee1c92dc0c01b43ca
 build:
-  number: 0
+  number: 1
   noarch: python
   script: {{ PYTHON }} -m pip install . -vv
 
@@ -22,7 +22,7 @@ requirements:
     - python >=3.7
 
   run_constrained:
-    - jupyterlab >=3,<4
+    - jupyterlab >=3,<5
 
 test:
   imports: