diff --git a/tests/trac.nix b/tests/trac.nix
index 6bb3413cea9e..4a2fc665bf77 100644
--- a/tests/trac.nix
+++ b/tests/trac.nix
@@ -56,6 +56,7 @@
       startAll;
       
       $postgresql->waitForJob("postgresql");
+      sleep 10; # !!! should not be needed
       $postgresql->mustSucceed("createdb trac");
       
       $webserver->mustSucceed("mkdir -p /repos/trac");