diff --git a/assets/openapi.json b/assets/openapi.json
index 6bf6f92..5d73449 100644
--- a/assets/openapi.json
+++ b/assets/openapi.json
@@ -1440,10 +1440,7 @@
                         "properties": {
                             "guild_hashes": {},
                             "highest_last_message_id": {
-                                "type": [
-                                    "string",
-                                    "integer"
-                                ]
+                                "type": "integer"
                             },
                             "read_state_version": {
                                 "type": "integer"
@@ -1475,10 +1472,7 @@
                         "properties": {
                             "guildHashes": {},
                             "highestLastMessageId": {
-                                "type": [
-                                    "string",
-                                    "integer"
-                                ]
+                                "type": "integer"
                             },
                             "readStateVersion": {
                                 "type": "integer"
diff --git a/assets/schemas.json b/assets/schemas.json
index 4d3646d..3e597f0 100644
--- a/assets/schemas.json
+++ b/assets/schemas.json
@@ -1473,10 +1473,7 @@
                 "properties": {
                     "guild_hashes": {},
                     "highest_last_message_id": {
-                        "type": [
-                            "string",
-                            "integer"
-                        ]
+                        "type": "integer"
                     },
                     "read_state_version": {
                         "type": "integer"
@@ -1508,10 +1505,7 @@
                 "properties": {
                     "guildHashes": {},
                     "highestLastMessageId": {
-                        "type": [
-                            "string",
-                            "integer"
-                        ]
+                        "type": "integer"
                     },
                     "readStateVersion": {
                         "type": "integer"