diff --git a/OpenActive.NET.Generator/package-lock.json b/OpenActive.NET.Generator/package-lock.json
index 8835913..ad47b25 100644
--- a/OpenActive.NET.Generator/package-lock.json
+++ b/OpenActive.NET.Generator/package-lock.json
@@ -5,9 +5,9 @@
   "requires": true,
   "dependencies": {
     "@openactive/data-models": {
-      "version": "2.0.164",
-      "resolved": "https://registry.npmjs.org/@openactive/data-models/-/data-models-2.0.164.tgz",
-      "integrity": "sha512-XMd6++n+3Vkej5KIK2gBeo7zYIkrEyP7dRhDpwQqTMU8WuTp29UVGyP4YzKYkKU+9pEQ7+5cDRLpDSzSuG1m8w=="
+      "version": "2.0.166",
+      "resolved": "https://registry.npmjs.org/@openactive/data-models/-/data-models-2.0.166.tgz",
+      "integrity": "sha512-yx9QhdbGIntozRBJpJjPAGtXNeLDeFT6I9dBZQv0q6w/h5E36mHTuLvR7JedZI7AFF9VocGfLEGydmjca0cVUQ=="
     },
     "@types/concat-stream": {
       "version": "1.6.0",
diff --git a/OpenActive.NET.Generator/package.json b/OpenActive.NET.Generator/package.json
index 4e811d8..31aa40d 100644
--- a/OpenActive.NET.Generator/package.json
+++ b/OpenActive.NET.Generator/package.json
@@ -11,7 +11,7 @@
   "author": "Nick Evans",
   "license": "MIT",
   "dependencies": {
-    "@openactive/data-models": "^2.0.164",
+    "@openactive/data-models": "^2.0.166",
     "fs-extra": "^7.0.1",
     "sync-request": "^6.0.0"
   }
diff --git a/OpenActive.NET/models/OpeningHoursSpecification.cs b/OpenActive.NET/models/OpeningHoursSpecification.cs
index 944d71f..493f6e1 100644
--- a/OpenActive.NET/models/OpeningHoursSpecification.cs
+++ b/OpenActive.NET/models/OpeningHoursSpecification.cs
@@ -48,7 +48,7 @@ public override string ToString()
 
         
         /// <summary>
-        /// The closing time.
+        /// The closing time. Set "00:00" for the value of `opens` and `closes` to indicated the `Place` is closed on the specified days.
         /// </summary>
         /// <example>
         /// <code>
@@ -61,20 +61,23 @@ public override string ToString()
 
 
         /// <summary>
-        /// Defines the day of the week upon which the Place is open
+        /// Defines the days of the week upon which the `opens` and `closes` values are specified.
         /// </summary>
         /// <example>
         /// <code>
-        /// "dayOfWeek": "https://schema.org/Monday"
+        /// "dayOfWeek": [
+        ///   "https://schema.org/Saturday",
+        ///   "https://schema.org/Sunday"
+        /// ]
         /// </code>
         /// </example>
         [DataMember(Name = "dayOfWeek", EmitDefaultValue = false, Order = 8)]
         [JsonConverter(typeof(ValuesConverter))]
-        public new virtual Schema.NET.DayOfWeek? DayOfWeek { get; set; }
+        public new virtual List<Schema.NET.DayOfWeek> DayOfWeek { get; set; }
 
 
         /// <summary>
-        /// The opening time.
+        /// The opening time. Set "00:00" for the value of `opens` and `closes` to indicated the `Place` is closed on the specified days.
         /// </summary>
         /// <example>
         /// <code>