diff --git a/packages/backend/src/core/AntennaService.ts b/packages/backend/src/core/AntennaService.ts
index be755f7da..7db8c43ea 100644
--- a/packages/backend/src/core/AntennaService.ts
+++ b/packages/backend/src/core/AntennaService.ts
@@ -77,10 +77,16 @@ export class AntennaService implements OnApplicationShutdown {
 			const { type, body } = obj.message as StreamMessages['internal']['payload'];
 			switch (type) {
 				case 'antennaCreated':
-					this.antennas.push(body);
+					this.antennas.push({
+						...body,
+						createdAt: new Date(body.createdAt),
+					});
 					break;
 				case 'antennaUpdated':
-					this.antennas[this.antennas.findIndex(a => a.id === body.id)] = body;
+					this.antennas[this.antennas.findIndex(a => a.id === body.id)] = {
+						...body,
+						createdAt: new Date(body.createdAt),
+					};
 					break;
 				case 'antennaDeleted':
 					this.antennas = this.antennas.filter(a => a.id !== body.id);
diff --git a/packages/backend/src/core/RoleService.ts b/packages/backend/src/core/RoleService.ts
index c0f5eae3d..f8f9231cd 100644
--- a/packages/backend/src/core/RoleService.ts
+++ b/packages/backend/src/core/RoleService.ts
@@ -91,10 +91,12 @@ export class RoleService implements OnApplicationShutdown {
 				case 'roleCreated': {
 					const cached = this.rolesCache.get(null);
 					if (cached) {
-						body.createdAt = new Date(body.createdAt);
-						body.updatedAt = new Date(body.updatedAt);
-						body.lastUsedAt = new Date(body.lastUsedAt);
-						cached.push(body);
+						cached.push({
+							...body,
+							createdAt: new Date(body.createdAt),
+							updatedAt: new Date(body.updatedAt),
+							lastUsedAt: new Date(body.lastUsedAt),
+						});
 					}
 					break;
 				}
@@ -103,10 +105,12 @@ export class RoleService implements OnApplicationShutdown {
 					if (cached) {
 						const i = cached.findIndex(x => x.id === body.id);
 						if (i > -1) {
-							body.createdAt = new Date(body.createdAt);
-							body.updatedAt = new Date(body.updatedAt);
-							body.lastUsedAt = new Date(body.lastUsedAt);
-							cached[i] = body;
+							cached[i] = {
+								...body,
+								createdAt: new Date(body.createdAt),
+								updatedAt: new Date(body.updatedAt),
+								lastUsedAt: new Date(body.lastUsedAt),
+							};
 						}
 					}
 					break;
@@ -121,8 +125,10 @@ export class RoleService implements OnApplicationShutdown {
 				case 'userRoleAssigned': {
 					const cached = this.roleAssignmentByUserIdCache.get(body.userId);
 					if (cached) {
-						body.createdAt = new Date(body.createdAt);
-						cached.push(body);
+						cached.push({
+							...body,
+							createdAt: new Date(body.createdAt),
+						});
 					}
 					break;
 				}