diff --git a/docs/man/cdist-reference.text.sh b/docs/man/cdist-reference.text.sh
index 4b1906b4..5de59eab 100755
--- a/docs/man/cdist-reference.text.sh
+++ b/docs/man/cdist-reference.text.sh
@@ -233,6 +233,9 @@ ENVIRONMENT VARIABLES (FOR WRITING)
 -----------------------------------
 The following environment variables influence the behaviour of cdist:
 
+require::
+    Setup dependencies between objects (see cdist-manifest(7))
+
 CDIST_ALLOW_OVERRIDE::
     Allow overwriting type parameters (see cdist-manifest(7))