diff --git a/src/SwaggerProvider.Runtime/RuntimeHelpers.fs b/src/SwaggerProvider.Runtime/RuntimeHelpers.fs
index 1c5f2caf..3135cfcf 100644
--- a/src/SwaggerProvider.Runtime/RuntimeHelpers.fs
+++ b/src/SwaggerProvider.Runtime/RuntimeHelpers.fs
@@ -85,6 +85,7 @@ module RuntimeHelpers =
         | :? array<string> as xs -> xs |> toStrArray name
         | :? array<DateTime> as xs -> xs |> toStrArrayDateTime name
         | :? array<DateTimeOffset> as xs -> xs |> toStrArrayDateTimeOffset name
+        | :? array<Guid> as xs -> xs |> toStrArray name
         | :? array<Option<bool>> as xs -> xs |> toStrArrayOpt name
         | :? array<Option<int32>> as xs -> xs |> toStrArrayOpt name
         | :? array<Option<int64>> as xs -> xs |> toStrArrayOpt name
diff --git a/tests/SwaggerProvider.ProviderTests/v3/Swashbuckle.UpdateControllers.Tests.fs b/tests/SwaggerProvider.ProviderTests/v3/Swashbuckle.UpdateControllers.Tests.fs
index f5efc41e..664eabb9 100644
--- a/tests/SwaggerProvider.ProviderTests/v3/Swashbuckle.UpdateControllers.Tests.fs
+++ b/tests/SwaggerProvider.ProviderTests/v3/Swashbuckle.UpdateControllers.Tests.fs
@@ -1,4 +1,4 @@
-module Swashbuckle.v3.UpdateControllersTests
+module Swashbuckle.v3.UpdateControllersTests
 
 open Expecto
 open System
@@ -7,6 +7,8 @@ open Swashbuckle.v3.ReturnControllersTests
 [<Tests>]
 let returnControllersTests =
   let guid = Guid.NewGuid()
+  let guid2 = Guid.NewGuid()
+  let guid3 = Guid.NewGuid()
   testList "All/v3/Swashbuckle.UpdateControllers.Tests" [
 
     testCaseAsync "Update Bool GET Test" <|
@@ -104,6 +106,14 @@ let returnControllersTests =
         (api.PostApiUpdateArrayEnum([|2;1|])
          |> asyncEqual [|1;2|])
 
+    testCaseAsync "Update Array Guid GET Test" <|
+        (api.GetApiUpdateArrayGuid([|guid; guid2; guid3|])
+         |> asyncEqual [|guid3; guid2; guid|])
+
+    testCaseAsync "Update Array Guid POST Test" <|
+        (api.PostApiUpdateArrayGuid([|guid; guid2; guid3|])
+         |> asyncEqual [|guid3; guid2; guid|])
+
     //TODO: System.InvalidOperationException: Could not create an instance of type 'Microsoft.FSharp.Collections.FSharpList`1[[System.Int32, System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]]'. Model bound complex types must not be abstract or value types and must have a parameterless constructor. Alternatively, give the 'x' parameter a non-null default value.
     // testCaseAsync "Update List Int GET Test" <|
     //     (api.GetApiUpdateListInt([|3;2;1|])
diff --git a/tests/Swashbuckle.WebApi.Server/Controllers/UpdateControllers.fs b/tests/Swashbuckle.WebApi.Server/Controllers/UpdateControllers.fs
index bb2affb0..53c6dba2 100644
--- a/tests/Swashbuckle.WebApi.Server/Controllers/UpdateControllers.fs
+++ b/tests/Swashbuckle.WebApi.Server/Controllers/UpdateControllers.fs
@@ -50,6 +50,9 @@ type UpdateArrayIntController () =
 type UpdateArrayEnumController () =
     inherit UpdateController<UriKind []>(Array.rev)
 
+type UpdateArrayGuidController () =
+    inherit UpdateController<Guid []>(Array.rev)
+
 type UpdateListIntController () =
     inherit UpdateController<int list>(List.rev)