diff --git a/docs/openapi.json b/docs/openapi.json
index ea526d12..40df0aec 100644
--- a/docs/openapi.json
+++ b/docs/openapi.json
@@ -786,9 +786,10 @@
 											"expiration_date": {
 												"type": "string",
 												"format": "date-time",
-												"description": "The date and time when the memory will expire. The default expiration date is 30 days from the date of creation. Format: YYYY-MM-DD",
+												"description": "The date and time when the memory will expire. Format: YYYY-MM-DD",
 												"title": "Expiration date",
-												"nullable": true
+												"nullable": true,
+												"default": null
 											},
 											"organization": {
 												"type": "string"
@@ -1193,9 +1194,10 @@
 											"expiration_date": {
 												"type": "string",
 												"format": "date-time",
-												"description": "The date and time when the memory will expire. The default expiration date is 30 days from the date of creation. Format: YYYY-MM-DD",
+												"description": "The date and time when the memory will expire. Format: YYYY-MM-DD",
 												"title": "Expiration date",
-												"nullable": true
+												"nullable": true,
+												"default": null
 											},
 											"organization": {
 												"type": "string"
@@ -1341,9 +1343,10 @@
 											"expiration_date": {
 												"type": "string",
 												"format": "date-time",
-												"description": "The date and time when the memory will expire. The default expiration date is 30 days from the date of creation. Format: YYYY-MM-DD",
+												"description": "The date and time when the memory will expire. Format: YYYY-MM-DD",
 												"title": "Expiration date",
-												"nullable": true
+												"nullable": true,
+												"default": null
 											},
 											"created_at": {
 												"type": "string",
@@ -1475,9 +1478,10 @@
 											"expiration_date": {
 												"type": "string",
 												"format": "date-time",
-												"description": "The date and time when the memory will expire. The default expiration date is 30 days from the date of creation. Format: YYYY-MM-DD",
+												"description": "The date and time when the memory will expire. Format: YYYY-MM-DD",
 												"title": "Expiration date",
-												"nullable": true
+												"nullable": true,
+												"default": null
 											},
 											"created_at": {
 												"type": "string",
@@ -4916,10 +4920,11 @@
 						"default": false
 					},
 					"expiration_date": {
-						"description": "The date and time when the memory will expire. The default expiration date is 30 days from the date of creation. Format: YYYY-MM-DD",
+						"description": "The date and time when the memory will expire. Format: YYYY-MM-DD",
 						"title": "Expiration date",
 						"type": "string",
-						"nullable": true
+						"nullable": true,
+						"default": null
 					},
 					"org_id": {
 						"description": "The unique identifier of the organization associated with this memory.",