--- a/tests/test-push-warn
+++ b/tests/test-push-warn
@@ -5,7 +5,7 @@ cd a
 hg init
 echo foo > t1
 hg add t1
-hg commit -m "1" -d "0 0"
+hg commit -m "1" -d "1000000 0"
 
 cd ..
 hg clone a b
@@ -13,16 +13,16 @@ hg clone a b
 cd a
 echo foo > t2
 hg add t2
-hg commit -m "2" -d "0 0"
+hg commit -m "2" -d "1000000 0"
 
 cd ../b
 echo foo > t3
 hg add t3
-hg commit -m "3" -d "0 0"
+hg commit -m "3" -d "1000000 0"
 
 hg push ../a
 hg pull ../a
 hg push ../a
 hg up -m
-hg commit -m "4" -d "0 0"
+hg commit -m "4" -d "1000000 0"
 hg push ../a