diff --git a/apt/APT_Instance.pm.in b/apt/APT_Instance.pm.in
index aabc4c462c6ce4d05c43fc9657e6e0450b45ee7d..df4b255ff18801c1fd7cd0038ee37dd2ae829083 100644
--- a/apt/APT_Instance.pm.in
+++ b/apt/APT_Instance.pm.in
@@ -554,7 +554,7 @@ sub Extend($$)
 	$certfile = $certificate->WriteToFile();
 	$userarg = "-c $certfile";
     }
-    system("$GENEXTENDCRED -a -o $credname -s $slice_urn -t 90 $userarg");
+    system("$GENEXTENDCRED -a -o $credname -s $slice_urn -t 180 $userarg");
     if ($?) {
 	print STDERR "Could not create extended credential\n";
 	return undef;