diff --git a/lib/Simba/CA.pm b/lib/Simba/CA.pm
index 5907630..6a144a2 100644
--- a/lib/Simba/CA.pm
+++ b/lib/Simba/CA.pm
@@ -543,6 +543,14 @@ sub db_record_version {
     my $t2b = gettimeofday();
     $self->{times}{db_record_version_versions2_get_version_id} += $t2b - $t2a;
     unless ($version_id) {
+        # We use a 32 bit int field in the database, so we have to clamp the mtime to that range.
+        # Need to fix this sometime before 2038 :-)
+        if ($f->{m} < -2147483648) {
+            $f->{m} = -2147483648;
+        } elsif ($f->{m} > 2147483647) {
+            $f->{m} = 2147483647;
+        }
+        $self->log(10, "insert into versions2(..., file_mtime=$f->{m}, ...)");
         # XXX why is $f->{checksum} undef here for ./bin/dash?
         $self->{dbh}->do("insert into versions2(
                                                 file_type, file_size, file_mtime,