diff --git a/backend/src/db/migrations/20250415010421_increase-certificate-altnames-character-limit.ts b/backend/src/db/migrations/20250415010421_increase-certificate-altnames-character-limit.ts
new file mode 100644
index 000000000..5703351a8
--- /dev/null
+++ b/backend/src/db/migrations/20250415010421_increase-certificate-altnames-character-limit.ts
@@ -0,0 +1,15 @@
+import { Knex } from "knex";
+
+import { TableName } from "../schemas";
+
+export async function up(knex: Knex): Promise<void> {
+  await knex.schema.alterTable(TableName.Certificate, (t) => {
+    t.string("altNames", 4096).alter();
+  });
+}
+
+export async function down(knex: Knex): Promise<void> {
+  await knex.schema.alterTable(TableName.Certificate, (t) => {
+    t.string("altNames").alter(); // Defaults to varchar(255)
+  });
+}
diff --git a/backend/src/db/migrations/20250415020304_increase-kmip-certificate-altnames-character-limit.ts b/backend/src/db/migrations/20250415020304_increase-kmip-certificate-altnames-character-limit.ts
new file mode 100644
index 000000000..e412d612a
--- /dev/null
+++ b/backend/src/db/migrations/20250415020304_increase-kmip-certificate-altnames-character-limit.ts
@@ -0,0 +1,15 @@
+import { Knex } from "knex";
+
+import { TableName } from "../schemas";
+
+export async function up(knex: Knex): Promise<void> {
+  await knex.schema.alterTable(TableName.KmipOrgServerCertificates, (t) => {
+    t.string("altNames", 4096).alter();
+  });
+}
+
+export async function down(knex: Knex): Promise<void> {
+  await knex.schema.alterTable(TableName.KmipOrgServerCertificates, (t) => {
+    t.string("altNames").alter(); // Defaults to varchar(255)
+  });
+}