diff --git a/spec3.json b/spec3.json
index 2bab87c..96464f4 100644
--- a/spec3.json
+++ b/spec3.json
@@ -3767,9 +3767,8 @@
                   },
                   "collectionId": {
                     "type": "string",
-                    "format": "uuid",
                     "nullable": true,
-                    "description": "Identifier for the collection to import into. One of collectionId or parentDocumentId is required."
+                    "description": "Identifier for the collection to import into. One of collectionId or parentDocumentId is required. Pass the literal string `personal` to import into the authenticated user's personal collection."
                   },
                   "parentDocumentId": {
                     "type": "string",
@@ -4698,9 +4697,8 @@
                   },
                   "collectionId": {
                     "type": "string",
-                    "format": "uuid",
                     "nullable": true,
-                    "description": "Identifier for the collection. Required to publish unless parentDocumentId is provided"
+                    "description": "Identifier for the collection. Required to publish unless parentDocumentId is provided. Pass the literal string `personal` to create the document in the authenticated user's personal collection."
                   },
                   "parentDocumentId": {
                     "type": "string",
@@ -12316,6 +12314,13 @@
             "nullable": true,
             "description": "A string that represents an icon in the outline-icons package or an emoji"
           },
+          "ownerId": {
+            "type": "string",
+            "nullable": true,
+            "description": "The identifier of the user who owns this collection when it is a personal collection. This is `null` for regular shared collections.",
+            "readOnly": true,
+            "format": "uuid"
+          },
           "permission": {
             "$ref": "#/components/schemas/Permission"
           },
@@ -13930,6 +13935,9 @@
             "format": "uuid",
             "nullable": true
           },
+          "createdBy": {
+            "$ref": "#/components/schemas/User"
+          },
           "createdAt": {
             "type": "string",
             "description": "The date and time that this membership was created.",
diff --git a/spec3.yml b/spec3.yml
index bf67820..d7aa1ef 100644
--- a/spec3.yml
+++ b/spec3.yml
@@ -2736,9 +2736,11 @@ paths:
                     textbundle/textpack bundles are supported.
                 collectionId:
                   type: string
-                  format: uuid
                   nullable: true
-                  description: Identifier for the collection to import into. One of collectionId or parentDocumentId is required.
+                  description: Identifier for the collection to import into. One of
+                    collectionId or parentDocumentId is required. Pass the literal
+                    string `personal` to import into the authenticated user's
+                    personal collection.
                 parentDocumentId:
                   type: string
                   format: uuid
@@ -3430,9 +3432,11 @@ paths:
                   description: Color for the document icon (hex format)
                 collectionId:
                   type: string
-                  format: uuid
                   nullable: true
-                  description: Identifier for the collection. Required to publish unless parentDocumentId is provided
+                  description: Identifier for the collection. Required to publish
+                    unless parentDocumentId is provided. Pass the literal string
+                    `personal` to create the document in the authenticated user's
+                    personal collection.
                 parentDocumentId:
                   type: string
                   format: uuid
@@ -8615,6 +8619,13 @@ components:
           type: string
           nullable: true
           description: A string that represents an icon in the outline-icons package or an emoji
+        ownerId:
+          type: string
+          nullable: true
+          description: The identifier of the user who owns this collection when it
+            is a personal collection. This is `null` for regular shared collections.
+          readOnly: true
+          format: uuid
         permission:
           "$ref": "#/components/schemas/Permission"
         templateManagement:
@@ -9933,6 +9944,8 @@ components:
           readOnly: true
           format: uuid
           nullable: true
+        createdBy:
+          "$ref": "#/components/schemas/User"
         createdAt:
           type: string
           description: The date and time that this membership was created.