diff --git a/system/t04_mirror/show.py b/system/t04_mirror/show.py
index 47fda530..4c1d97d6 100644
--- a/system/t04_mirror/show.py
+++ b/system/t04_mirror/show.py
@@ -24,4 +24,4 @@ class ShowMirror3Test(BaseTest):
     """
     fixtureDB = True
     runCmd = "aptly mirror show --with-packages wheezy-contrib"
-    outputMatchPrepare = lambda _, s: re.sub(r"Last update: [0-9:A-Za-z -]+\n", "", s)
+    outputMatchPrepare = lambda _, s: re.sub(r"Last update: [0-9:+A-Za-z -]+\n", "", s)