diff --git a/pyproject.toml b/pyproject.toml
index a2c370af..4b38330c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -66,7 +66,7 @@ all = [
     "aiohttp <4.0"
 ]
 lab = [
-    "imjoy-jupyterlab-extension >=0.1.13",
+    "imjoy-jupyterlab-extension ==0.1.13",
     "imjoy-elfinder[jupyter]",
     "aiohttp <4.0"
 ]