# Each micro release EOLs the previous one in the same series.
        if self.status == "f" and self.micro > 0 and self.is_active:
            (
                type(self)
                .objects.filter(
                    major=self.major, minor=self.minor, micro=self.micro - 1, status="f"
                )
                .update(eol_date=self.date)
            )

        # Each micro release EOLs the previous one in the same series.
        if self.status == "f" and self.micro > 0 and self.is_active:
            (
                type(self)
                .objects.filter(
                    major=self.major, minor=self.minor, micro=self.micro - 1, status="f"
                )
                .update(eol_date=self.date)
            )
        elif self.status == "f" and self.micro == 0 and self.is_active:
            (
                type(self)
                .objects.filter(
                    major=self.major,
                    minor=self.minor,
                    micro=self.micro,
                    status="rc",
                    eol_date__isnull=True,
                )
                .update(eol_date=self.date)
            )
        elif self.iteration > 1 and self.is_active:
            (
                type(self)
                .objects.filter(
                    major=self.major,
                    minor=self.minor,
                    micro=self.micro,
                    status=self.status,
                    iteration=self.iteration - 1,
                )
                .update(eol_date=self.date)
            )
        elif self.status in ["b", "rc"]  and self.is_active:
            previous_status = {"b": "a", "rc": "b"}
            (
                type(self)
                .objects.filter(
                    major=self.major,
                    minor=self.minor,
                    micro=self.micro,
                    status=previous_status[self.status],
                    eol_date__isnull=True,
                )
                .update(eol_date=self.date)
            )