diff --git a/SlackNet.Tests/SerializationTests.cs b/SlackNet.Tests/SerializationTests.cs
index 52a0181d..b8fee122 100644
--- a/SlackNet.Tests/SerializationTests.cs
+++ b/SlackNet.Tests/SerializationTests.cs
@@ -5,6 +5,7 @@
 using Newtonsoft.Json;
 using NUnit.Framework;
 using SlackNet.Events;
+using SlackNet.WebApi;
 
 namespace SlackNet.Tests;
 
@@ -209,6 +210,29 @@ public void TimeSpan_DeserializedFromHoursAndMinutes()
                 });
     }
 
+    [TestCase("2001-02-03")]
+    [TestCase("2001-02-03T04:05:06")]
+    [TestCase("2001-02-03T04:05:06Z")]
+    [TestCase("2001-02-03T04:05:06+07:00")]
+    public void DateString_DeserializedToStringProperty_Unchanged(string date)
+    {
+        var result = Deserialize<Event>($@"{{ ""type"": ""message"", ""text"": ""{date}"" }}");
+        result.ShouldBeA<MessageEvent>()
+            .And.Text.ShouldBe(date);
+    }
+
+    [TestCase("2001-02-03")]
+    [TestCase("2001-02-03T04:05:06+07:00")]
+    public void DateString_InWebApiResponse_Unchanged(string date)
+    {
+        var response = Deserialize<WebApiResponse>($@"{{ ""ok"": true, ""messages"": [{{ ""type"": ""message"", ""text"": ""{date}"" }}] }}");
+
+        var result = response.Data.ToObject<ConversationHistoryResponse>(JsonSerializer.Create(_sut));
+
+        result.Messages.ShouldBeASingular<MessageEvent>()
+            .And.Text.ShouldBe(date);
+    }
+
     private string Serialize(object obj) => JsonConvert.SerializeObject(obj, _sut);
 
     private T Deserialize<T>(string json) => JsonConvert.DeserializeObject<T>(json, _sut);
diff --git a/SlackNet/Default.cs b/SlackNet/Default.cs
index a5b0a79e..a73f433d 100644
--- a/SlackNet/Default.cs
+++ b/SlackNet/Default.cs
@@ -32,6 +32,7 @@ private static JsonSerializerSettings SerializerSettings(ISlackTypeResolver slac
                 TraceWriter = new SerializationLogger(logger),
                 NullValueHandling = NullValueHandling.Ignore,
                 DateFormatString = "yyyy-MM-dd",
+                DateParseHandling = DateParseHandling.None,
                 ContractResolver = new SlackNetContractResolver
                     {
                         NamingStrategy = namingStrategy,