diff --git a/test/notmuch-test b/test/notmuch-test
index 3c1cd9ff..04c64705 100755
--- a/test/notmuch-test
+++ b/test/notmuch-test
@@ -1,6 +1,8 @@
 #!/bin/bash
 set -e
 
+export TZ=UTC+8
+
 find_notmuch_binary ()
 {
     dir=$1