diff --git a/hledger/test/timedot.test b/hledger/test/timedot.test
index 68f8d5588385..ef677bd1b128 100644
--- a/hledger/test/timedot.test
+++ b/hledger/test/timedot.test
@@ -82,3 +82,7 @@ $ hledger -ftimedot:- print
 
 # ** 5. XXX check this
 $ hledger --version
+
+# ** 6. XXX and this
+$ stack exec -- ghc-pkg list
+