diff --git a/bin/hledger-check-dupes.hs b/bin/hledger-check-dupes.hs
index dd25b356f..26166a82b 100755
--- a/bin/hledger-check-dupes.hs
+++ b/bin/hledger-check-dupes.hs
@@ -1,6 +1,7 @@
 #!/usr/bin/env stack
 {- stack runghc --verbosity info
    --package hledger-lib
+   --package hledger
    --package here
    --package text
 -}