diff --git a/vulnerabilities/migrations/0143_remove_impactedpackageaffecting_vulnerabili_impacte_1904b9_idx_and_more.py b/vulnerabilities/migrations/0143_remove_impactedpackageaffecting_vulnerabili_impacte_1904b9_idx_and_more.py
new file mode 100644
index 000000000..09daf71d8
--- /dev/null
+++ b/vulnerabilities/migrations/0143_remove_impactedpackageaffecting_vulnerabili_impacte_1904b9_idx_and_more.py
@@ -0,0 +1,36 @@
+# Generated by Django 5.2.11 on 2026-09-14 12:17
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("vulnerabilities", "0142_advisoryv2_is_curation_advisoryv2_resolves_todos"),
+    ]
+
+    operations = [
+        migrations.RemoveIndex(
+            model_name="impactedpackageaffecting",
+            name="vulnerabili_impacte_1904b9_idx",
+        ),
+        migrations.RemoveIndex(
+            model_name="impactedpackagefixedby",
+            name="vulnerabili_impacte_390971_idx",
+        ),
+        migrations.AlterField(
+            model_name="impactedpackageaffecting",
+            name="created_at",
+            field=models.DateTimeField(auto_now_add=True),
+        ),
+        migrations.AlterField(
+            model_name="impactedpackagefixedby",
+            name="created_at",
+            field=models.DateTimeField(auto_now_add=True),
+        ),
+        migrations.AlterField(
+            model_name="pipelinerun",
+            name="created_date",
+            field=models.DateTimeField(auto_now_add=True),
+        ),
+    ]
diff --git a/vulnerabilities/models.py b/vulnerabilities/models.py
index 59393e6ee..6b115b1e2 100644
--- a/vulnerabilities/models.py
+++ b/vulnerabilities/models.py
@@ -2009,7 +2009,6 @@ class PipelineRun(models.Model):
 
     created_date = models.DateTimeField(
         auto_now_add=True,
-        db_index=True,
     )
 
     vulnerablecode_version = models.CharField(
@@ -3925,14 +3924,12 @@ class ImpactedPackageAffecting(models.Model):
 
     created_at = models.DateTimeField(
         auto_now_add=True,
-        db_index=True,
     )
 
     class Meta:
         unique_together = ("impacted_package", "package")
         indexes = [
             models.Index(fields=["package", "impacted_package"]),
-            models.Index(fields=["impacted_package", "package"]),
         ]
 
 
@@ -3948,14 +3945,12 @@ class ImpactedPackageFixedBy(models.Model):
 
     created_at = models.DateTimeField(
         auto_now_add=True,
-        db_index=True,
     )
 
     class Meta:
         unique_together = ("impacted_package", "package")
         indexes = [
             models.Index(fields=["package", "impacted_package"]),
-            models.Index(fields=["impacted_package", "package"]),
         ]