diff --git a/mailman/bin/update b/mailman/bin/update

index 2342950..3caea33 100755

--- a/mailman/bin/update

+++ b/mailman/bin/update

@@ -45,6 +45,7 @@ import marshal

 import paths

 import email

+import warnings

 from Mailman import mm_cfg

 from Mailman import Utils

@@ -771,6 +772,7 @@ if __name__ == '__main__':

         elif opt in ('-f', '--force'):

             force = 1

+    warnings.filterwarnings("ignore",".*negative int will return a signed string.*",FutureWarning)

     # calculate the versions

     lastversion, thisversion = calcversions()

     hexlversion = hex(lastversion)