--- a/tests/test-transaction-rollback-on-sigpipe.t	Mon May 17 15:24:46 2021 +0200
+++ b/tests/test-transaction-rollback-on-sigpipe.t	Tue May 18 13:24:41 2021 -0400
@@ -1,3 +1,4 @@
+#require bash
 Test that, when an hg push is interrupted and the remote side recieves SIGPIPE,
 the remote hg is able to successfully roll back the transaction.