diff --git a/src/Node.Worker.Parent.purs b/src/Node.Worker.Parent.purs
index 9620994..bf1378b 100644
--- a/src/Node.Worker.Parent.purs
+++ b/src/Node.Worker.Parent.purs
@@ -1,6 +1,6 @@
 module Node.Worker.Parent
   ( Worker
-  , SpawnEnv
+  , SpawnEnv(..)
   , stdout
   , stderr
   , stdin