diff --git a/osidb/api_views.py b/osidb/api_views.py
index 2f24a85d4..645de1501 100644
--- a/osidb/api_views.py
+++ b/osidb/api_views.py
@@ -527,24 +527,15 @@ def get(self, request):
 class FlawView(RudimentaryUserPathLoggingMixin, ModelViewSet):
     queryset = Flaw.objects.prefetch_related(
         "acknowledgments",
-        "acknowledgments__alerts",
         "affects",
-        "affects__alerts",
         "affects__cvss_scores",
-        "affects__cvss_scores__alerts",
         "affects__trackers",
         "affects__trackers__errata",
         "affects__trackers__affects",
-        "affects__trackers__alerts",
-        "alerts",
         "comments",
-        "comments__alerts",
         "cvss_scores",
-        "cvss_scores__alerts",
         "package_versions",
-        "package_versions__alerts",
         "references",
-        "references__alerts",
     ).all()
     serializer_class = FlawSerializer
     filter_backends = (DjangoFilterBackend,)
@@ -827,13 +818,10 @@ class AffectView(
     RudimentaryUserPathLoggingMixin, SubFlawViewDestroyMixin, ModelViewSet
 ):
     queryset = Affect.objects.prefetch_related(
-        "alerts",
         "cvss_scores",
-        "cvss_scores__alerts",
         "trackers",
         "trackers__errata",
         "trackers__affects",
-        "trackers__alerts",
     ).all()
     serializer_class = AffectSerializer
     filterset_class = AffectFilter
@@ -1095,7 +1083,7 @@ def destroy(self, request, *args, **kwargs):
     ),
 )
 class TrackerView(RudimentaryUserPathLoggingMixin, ModelViewSet):
-    queryset = Tracker.objects.prefetch_related("alerts", "errata", "affects").all()
+    queryset = Tracker.objects.prefetch_related("errata", "affects").all()
     serializer_class = TrackerSerializer
     filterset_class = TrackerFilter
     http_method_names = get_valid_http_methods(ModelViewSet, excluded=["delete"])
diff --git a/osidb/mixins.py b/osidb/mixins.py
index 71c86c5e9..8baf76e13 100644
--- a/osidb/mixins.py
+++ b/osidb/mixins.py
@@ -687,10 +687,17 @@ class AlertMixin(ValidateMixin):
     It also provides the automatic validation mechanism on every save.
     """
 
-    alerts = GenericRelation(Alert)
+    _alerts = GenericRelation(Alert)
 
     last_validated_dt = models.DateTimeField(blank=True, default=timezone.now)
 
+    @property
+    def alerts(self):
+        """
+        Get all alerts related to this object.
+        """
+        return self._alerts.filter(created_dt__gte=self.last_validated_dt)
+
     def alert(
         self,
         name,
@@ -817,7 +824,7 @@ def save(self, *args, **kwargs):
 
         dry_run = kwargs.pop("no_alerts", False)
         if not dry_run:
-            self.last_validated_dt = timezone.now().replace(microsecond=0)
+            self.last_validated_dt = timezone.now()
 
         self.validate(
             raise_validation_error=kwargs.pop("raise_validation_error", True),