diff --git a/samples/star-wars-api/Startup.fs b/samples/star-wars-api/Startup.fs
index f423b7a86..1d07bb1cb 100644
--- a/samples/star-wars-api/Startup.fs
+++ b/samples/star-wars-api/Startup.fs
@@ -15,6 +15,12 @@ type Startup private () =
 
     let rootFactory (ctx) : Root = Root (ctx)
 
+    /// Added for testing purposes because in .NET 8 JsonSerializerOptions become frozen after the first use
+    /// and using this function caused an exception.
+    let configure (options : GraphQLOptions<_>) =
+        options.SerializerOptions.Converters.Add (new System.Text.Json.Serialization.JsonStringEnumConverter ())
+        options
+
     new (configuration : IConfiguration) as this =
         Startup ()
         then this.Configuration <- configuration
@@ -22,7 +28,7 @@ type Startup private () =
     member _.ConfigureServices (services : IServiceCollection) =
         services
             .AddGiraffe()
-            .AddGraphQLOptions<Root> (Schema.executor, rootFactory)
+            .AddGraphQLOptions<Root> (Schema.executor, rootFactory, configure = configure)
         |> ignore
 
     member _.Configure
diff --git a/src/FSharp.Data.GraphQL.Server.AspNetCore/Serialization/JSON.fs b/src/FSharp.Data.GraphQL.Server.AspNetCore/Serialization/JSON.fs
index 2d949f2ac..71fe1e035 100644
--- a/src/FSharp.Data.GraphQL.Server.AspNetCore/Serialization/JSON.fs
+++ b/src/FSharp.Data.GraphQL.Server.AspNetCore/Serialization/JSON.fs
@@ -49,4 +49,3 @@ let getWSSerializerOptions (additionalConverters: JsonConverter seq) =
     options |> configureDefaultWSSerializerOptions additionalConverters
     options
 
-let serializerOptions = getWSSerializerOptions Seq.empty
diff --git a/src/FSharp.Data.GraphQL.Server.AspNetCore/StartupExtensions.fs b/src/FSharp.Data.GraphQL.Server.AspNetCore/StartupExtensions.fs
index fa4bf4c39..dada40484 100644
--- a/src/FSharp.Data.GraphQL.Server.AspNetCore/StartupExtensions.fs
+++ b/src/FSharp.Data.GraphQL.Server.AspNetCore/StartupExtensions.fs
@@ -16,7 +16,7 @@ module ServiceCollectionExtensions =
         SchemaExecutor = executor
         RootFactory = rootFactory
         ReadBufferSize = GraphQLOptionsDefaults.ReadBufferSize
-        SerializerOptions = Json.serializerOptions
+        SerializerOptions = Json.getWSSerializerOptions Seq.empty
         WebsocketOptions = {
             EndpointUrl = endpointUrl
             ConnectionInitTimeout = TimeSpan.FromMilliseconds (GraphQLOptionsDefaults.WebSocketConnectionInitTimeoutInMs)
diff --git a/tests/FSharp.Data.GraphQL.Tests/AspNetCore/InvalidMessageTests.fs b/tests/FSharp.Data.GraphQL.Tests/AspNetCore/InvalidMessageTests.fs
index 7075962f9..076d39bde 100644
--- a/tests/FSharp.Data.GraphQL.Tests/AspNetCore/InvalidMessageTests.fs
+++ b/tests/FSharp.Data.GraphQL.Tests/AspNetCore/InvalidMessageTests.fs
@@ -6,7 +6,6 @@ open FSharp.Data.GraphQL.Server.AspNetCore
 open FSharp.Data.GraphQL.Server.AspNetCore.WebSockets
 
 let toClientMessage (theInput : string) =
-    let serializerOptions = Json.serializerOptions
     JsonSerializer.Deserialize<ClientMessage> (theInput, serializerOptions)
 
 let willResultInInvalidMessage expectedExplanation input =
diff --git a/tests/FSharp.Data.GraphQL.Tests/AspNetCore/SerializationTests.fs b/tests/FSharp.Data.GraphQL.Tests/AspNetCore/SerializationTests.fs
index 05bcab916..c36faa8d0 100644
--- a/tests/FSharp.Data.GraphQL.Tests/AspNetCore/SerializationTests.fs
+++ b/tests/FSharp.Data.GraphQL.Tests/AspNetCore/SerializationTests.fs
@@ -7,8 +7,6 @@ open FSharp.Data.GraphQL.Server.AspNetCore
 open FSharp.Data.GraphQL.Server.AspNetCore.WebSockets
 open System.Text.Json.Serialization
 
-let serializerOptions = Json.serializerOptions
-
 [<Fact>]
 let ``Deserializes ConnectionInit correctly`` () =
 
diff --git a/tests/FSharp.Data.GraphQL.Tests/ExecutionTests.fs b/tests/FSharp.Data.GraphQL.Tests/ExecutionTests.fs
index 99ffafa01..410ef1e9f 100644
--- a/tests/FSharp.Data.GraphQL.Tests/ExecutionTests.fs
+++ b/tests/FSharp.Data.GraphQL.Tests/ExecutionTests.fs
@@ -16,7 +16,6 @@ open FSharp.Data.GraphQL
 open FSharp.Data.GraphQL.Types
 open FSharp.Data.GraphQL.Parser
 open FSharp.Data.GraphQL.Execution
-open FSharp.Data.GraphQL.Server.AspNetCore
 
 type TestSubject = {
     a: string
@@ -131,7 +130,7 @@ let ``Execution handles basic tasks: executes arbitrary code`` () =
 
     let schema = Schema(DataType)
     let schemaProcessor = Executor(schema)
-    let params' = JsonDocument.Parse("""{"size":100}""").RootElement.Deserialize<ImmutableDictionary<string, JsonElement>>(Json.serializerOptions)
+    let params' = JsonDocument.Parse("""{"size":100}""").RootElement.Deserialize<ImmutableDictionary<string, JsonElement>>(serializerOptions)
     let result = sync <| schemaProcessor.AsyncExecute(ast, data, variables = params', operationName = "Example")
     ensureDirect result <| fun data errors ->
         empty errors
diff --git a/tests/FSharp.Data.GraphQL.Tests/Helpers.fs b/tests/FSharp.Data.GraphQL.Tests/Helpers.fs
index ebed4962d..bd1ee38c3 100644
--- a/tests/FSharp.Data.GraphQL.Tests/Helpers.fs
+++ b/tests/FSharp.Data.GraphQL.Tests/Helpers.fs
@@ -11,6 +11,9 @@ open System.Threading
 open System.Threading.Tasks
 open Xunit
 open FSharp.Data.GraphQL
+open FSharp.Data.GraphQL.Server.AspNetCore
+
+let serializerOptions = Json.getWSSerializerOptions Seq.empty
 
 let isType<'a> actual = Assert.IsAssignableFrom<'a>(actual)
 let isSeq<'a> actual = isType<'a seq> actual
@@ -74,11 +77,10 @@ let greaterThanOrEqual expected actual =
 
 open System.Text.Json
 open FSharp.Data.GraphQL.Types
-open FSharp.Data.GraphQL.Server.AspNetCore
 
 let stringifyArg name (ctx : ResolveFieldContext) () =
     let arg = ctx.TryArg name |> Option.toObj
-    JsonSerializer.Serialize (arg, Json.serializerOptions)
+    JsonSerializer.Serialize (arg, serializerOptions)
 
 let stringifyInput = stringifyArg "input"
 
diff --git a/tests/FSharp.Data.GraphQL.Tests/Variables and Inputs/InputComplexTests.fs b/tests/FSharp.Data.GraphQL.Tests/Variables and Inputs/InputComplexTests.fs
index ecebe84e4..86c3d4913 100644
--- a/tests/FSharp.Data.GraphQL.Tests/Variables and Inputs/InputComplexTests.fs	
+++ b/tests/FSharp.Data.GraphQL.Tests/Variables and Inputs/InputComplexTests.fs	
@@ -16,7 +16,6 @@ open FSharp.Data.GraphQL.Ast
 open FSharp.Data.GraphQL.Types
 open FSharp.Data.GraphQL.Parser
 open FSharp.Data.GraphQL.Execution
-open FSharp.Data.GraphQL.Server.AspNetCore
 open ErrorHelpers
 
 let TestComplexScalar =
@@ -113,7 +112,7 @@ let variablesWithInput inputName input = $"""{{"%s{inputName}":%s{input}}}"""
 let paramsWithValueInput input =
     JsonDocument
         .Parse(variablesWithInput "input" input)
-        .RootElement.Deserialize<ImmutableDictionary<string, JsonElement>> (Json.serializerOptions)
+        .RootElement.Deserialize<ImmutableDictionary<string, JsonElement>> (serializerOptions)
 
 let testInputObject =
     """{"mand":"baz","opt1":"foo","opt2":null,"optSeq":["bar"],"voptSeq":["bar"],"optArr":null,"voptArr":null}"""
diff --git a/tests/FSharp.Data.GraphQL.Tests/Variables and Inputs/InputEnumTests.fs b/tests/FSharp.Data.GraphQL.Tests/Variables and Inputs/InputEnumTests.fs
index 5229b190b..6ef3387ad 100644
--- a/tests/FSharp.Data.GraphQL.Tests/Variables and Inputs/InputEnumTests.fs	
+++ b/tests/FSharp.Data.GraphQL.Tests/Variables and Inputs/InputEnumTests.fs	
@@ -14,11 +14,10 @@ open FSharp.Data.GraphQL
 open FSharp.Data.GraphQL.Types
 open FSharp.Data.GraphQL.Parser
 open FSharp.Data.GraphQL.Execution
-open FSharp.Data.GraphQL.Server.AspNetCore
 
 let stringifyArg name (ctx : ResolveFieldContext) () =
     let arg = ctx.TryArg name |> Option.toObj
-    JsonSerializer.Serialize (arg, Json.serializerOptions)
+    JsonSerializer.Serialize (arg, serializerOptions)
 
 let stringifyInput = stringifyArg "input"
 
@@ -45,7 +44,7 @@ let variablesWithInput inputName input = $"""{{"%s{inputName}":%s{input}}}"""
 let paramsWithEnumInput input =
     JsonDocument
         .Parse(variablesWithInput "enumVar" input)
-        .RootElement.Deserialize<ImmutableDictionary<string, JsonElement>> (Json.serializerOptions)
+        .RootElement.Deserialize<ImmutableDictionary<string, JsonElement>> (serializerOptions)
 
 [<Fact>]
 let ``Execute handles enum input as variable`` () =
diff --git a/tests/FSharp.Data.GraphQL.Tests/Variables and Inputs/InputListTests.fs b/tests/FSharp.Data.GraphQL.Tests/Variables and Inputs/InputListTests.fs
index d5b8de7eb..96c0d3ea0 100644
--- a/tests/FSharp.Data.GraphQL.Tests/Variables and Inputs/InputListTests.fs	
+++ b/tests/FSharp.Data.GraphQL.Tests/Variables and Inputs/InputListTests.fs	
@@ -14,12 +14,11 @@ open FSharp.Data.GraphQL
 open FSharp.Data.GraphQL.Types
 open FSharp.Data.GraphQL.Parser
 open FSharp.Data.GraphQL.Execution
-open FSharp.Data.GraphQL.Server.AspNetCore
 open ErrorHelpers
 
 let stringifyArg name (ctx : ResolveFieldContext) () =
     let arg = ctx.TryArg name |> Option.toObj
-    JsonSerializer.Serialize (arg, Json.serializerOptions)
+    JsonSerializer.Serialize (arg, serializerOptions)
 
 let stringifyInput = stringifyArg "input"
 
@@ -41,7 +40,7 @@ let variablesWithInput inputName input = $"""{{"%s{inputName}":%s{input}}}"""
 let paramsWithValueInput input =
     JsonDocument
         .Parse(variablesWithInput "input" input)
-        .RootElement.Deserialize<ImmutableDictionary<string, JsonElement>> (Json.serializerOptions)
+        .RootElement.Deserialize<ImmutableDictionary<string, JsonElement>> (serializerOptions)
 
 [<Fact>]
 let ``Execute handles list inputs and nullability and allows lists to be null`` () =
diff --git a/tests/FSharp.Data.GraphQL.Tests/Variables and Inputs/InputNestedTests.fs b/tests/FSharp.Data.GraphQL.Tests/Variables and Inputs/InputNestedTests.fs
index 2ba48355d..466537726 100644
--- a/tests/FSharp.Data.GraphQL.Tests/Variables and Inputs/InputNestedTests.fs	
+++ b/tests/FSharp.Data.GraphQL.Tests/Variables and Inputs/InputNestedTests.fs	
@@ -13,7 +13,6 @@ open FSharp.Data.GraphQL
 open FSharp.Data.GraphQL.Types
 open FSharp.Data.GraphQL.Parser
 open FSharp.Data.GraphQL.Execution
-open FSharp.Data.GraphQL.Server.AspNetCore
 
 let InputArrayOf (innerDef : #TypeDef<'Val>) : ListOfDef<'Val, 'Val array> = ListOf innerDef
 
@@ -60,7 +59,7 @@ let rec TestRecursiveInputObject =
 
 let stringifyArg name (ctx : ResolveFieldContext) () =
     let arg = ctx.TryArg name |> Option.toObj
-    JsonSerializer.Serialize (arg, Json.serializerOptions)
+    JsonSerializer.Serialize (arg, serializerOptions)
 
 let stringifyInput = stringifyArg "input"
 
diff --git a/tests/FSharp.Data.GraphQL.Tests/Variables and Inputs/InputNullableStringTests.fs b/tests/FSharp.Data.GraphQL.Tests/Variables and Inputs/InputNullableStringTests.fs
index 9ae2386b7..5d4288b87 100644
--- a/tests/FSharp.Data.GraphQL.Tests/Variables and Inputs/InputNullableStringTests.fs	
+++ b/tests/FSharp.Data.GraphQL.Tests/Variables and Inputs/InputNullableStringTests.fs	
@@ -14,12 +14,11 @@ open FSharp.Data.GraphQL
 open FSharp.Data.GraphQL.Types
 open FSharp.Data.GraphQL.Parser
 open FSharp.Data.GraphQL.Execution
-open FSharp.Data.GraphQL.Server.AspNetCore
 open ErrorHelpers
 
 let stringifyArg name (ctx : ResolveFieldContext) () =
     let arg = ctx.TryArg name |> Option.toObj
-    JsonSerializer.Serialize (arg, Json.serializerOptions)
+    JsonSerializer.Serialize (arg, serializerOptions)
 
 let stringifyInput = stringifyArg "input"
 
@@ -46,7 +45,7 @@ let variablesWithInput inputName input = $"""{{"%s{inputName}":%s{input}}}"""
 let paramsWithValueInput input =
     JsonDocument
         .Parse(variablesWithInput "input" input)
-        .RootElement.Deserialize<ImmutableDictionary<string, JsonElement>> (Json.serializerOptions)
+        .RootElement.Deserialize<ImmutableDictionary<string, JsonElement>> (serializerOptions)
 
 [<Fact>]
 let ``Execute handles variables and allows nullable inputs to be omitted`` () =
@@ -99,7 +98,7 @@ let ``Execute handles variables and allows nullable inputs to be set to a value
     let paramsWithValueInput input =
         JsonDocument
             .Parse(variablesWithInput "value" input)
-            .RootElement.Deserialize<ImmutableDictionary<string, JsonElement>> (Json.serializerOptions)
+            .RootElement.Deserialize<ImmutableDictionary<string, JsonElement>> (serializerOptions)
 
     let testInputValue = "\"a\""
     let params' = paramsWithValueInput testInputValue
@@ -130,7 +129,7 @@ let ``Execute handles non-nullable scalars and does not allow non-nullable input
     let paramsWithValueInput input =
         JsonDocument
             .Parse(variablesWithInput "value" input)
-            .RootElement.Deserialize<ImmutableDictionary<string, JsonElement>> (Json.serializerOptions)
+            .RootElement.Deserialize<ImmutableDictionary<string, JsonElement>> (serializerOptions)
 
     let testInputValue = "null"
     let params' = paramsWithValueInput testInputValue
@@ -149,7 +148,7 @@ let ``Execute handles non-nullable scalars and allows non-nullable inputs to be
     let paramsWithValueInput input =
         JsonDocument
             .Parse(variablesWithInput "value" input)
-            .RootElement.Deserialize<ImmutableDictionary<string, JsonElement>> (Json.serializerOptions)
+            .RootElement.Deserialize<ImmutableDictionary<string, JsonElement>> (serializerOptions)
 
     let testInputValue = "\"a\""
     let params' = paramsWithValueInput testInputValue
@@ -181,7 +180,7 @@ let ``Execute uses argument default value when no argument was provided`` () =
 let paramsWithOptionalInput input =
     JsonDocument
         .Parse(variablesWithInput "optional" input)
-        .RootElement.Deserialize<ImmutableDictionary<string, JsonElement>> (Json.serializerOptions)
+        .RootElement.Deserialize<ImmutableDictionary<string, JsonElement>> (serializerOptions)
 
 [<Fact>]
 let ``Execute uses argument default value when nullable variable provided`` () =
diff --git a/tests/FSharp.Data.GraphQL.Tests/Variables and Inputs/InputObjectValidatorTests.fs b/tests/FSharp.Data.GraphQL.Tests/Variables and Inputs/InputObjectValidatorTests.fs
index d9bb21a16..879a3e82e 100644
--- a/tests/FSharp.Data.GraphQL.Tests/Variables and Inputs/InputObjectValidatorTests.fs	
+++ b/tests/FSharp.Data.GraphQL.Tests/Variables and Inputs/InputObjectValidatorTests.fs	
@@ -15,7 +15,6 @@ open FSharp.Data.GraphQL.Parser
 open FSharp.Data.GraphQL.Execution
 open FSharp.Data.GraphQL.Validation
 open FSharp.Data.GraphQL.Validation.ValidationResult
-open FSharp.Data.GraphQL.Server.AspNetCore
 open ErrorHelpers
 
 type InputRecord = { Country : string; ZipCode : string; City : string }
@@ -158,7 +157,7 @@ let variablesWithAllInputs (record, record1, record2, record3) =
 let paramsWithValues variables =
     JsonDocument
         .Parse(variables : string)
-        .RootElement.Deserialize<ImmutableDictionary<string, JsonElement>> (Json.serializerOptions)
+        .RootElement.Deserialize<ImmutableDictionary<string, JsonElement>> (serializerOptions)
 
 [<Fact>]
 let ``Execute handles validation of valid input records from variables with all fields`` () =
diff --git a/tests/FSharp.Data.GraphQL.Tests/Variables and Inputs/InputRecordTests.fs b/tests/FSharp.Data.GraphQL.Tests/Variables and Inputs/InputRecordTests.fs
index cf38f0ac7..7c1cf78ae 100644
--- a/tests/FSharp.Data.GraphQL.Tests/Variables and Inputs/InputRecordTests.fs	
+++ b/tests/FSharp.Data.GraphQL.Tests/Variables and Inputs/InputRecordTests.fs	
@@ -11,7 +11,6 @@ open System.Text.Json
 open FSharp.Data.GraphQL
 open FSharp.Data.GraphQL.Types
 open FSharp.Data.GraphQL.Parser
-open FSharp.Data.GraphQL.Server.AspNetCore
 
 type InputRecord = { a : string; b : string; c : string }
 
@@ -143,7 +142,7 @@ let variablesWithAllInputs (record, optRecord) =
 let paramsWithValues variables =
     JsonDocument
         .Parse(variables : string)
-        .RootElement.Deserialize<ImmutableDictionary<string, JsonElement>> (Json.serializerOptions)
+        .RootElement.Deserialize<ImmutableDictionary<string, JsonElement>> (serializerOptions)
 
 [<Fact>]
 let ``Execute handles creation of input records from variables with all fields`` () =
diff --git a/tests/FSharp.Data.GraphQL.Tests/Variables and Inputs/OptionalsNormalizationTests.fs b/tests/FSharp.Data.GraphQL.Tests/Variables and Inputs/OptionalsNormalizationTests.fs
index 1fb88fc2e..555a16997 100644
--- a/tests/FSharp.Data.GraphQL.Tests/Variables and Inputs/OptionalsNormalizationTests.fs	
+++ b/tests/FSharp.Data.GraphQL.Tests/Variables and Inputs/OptionalsNormalizationTests.fs	
@@ -13,7 +13,6 @@ open System.Text.Json
 open FSharp.Data.GraphQL
 open FSharp.Data.GraphQL.Types
 open FSharp.Data.GraphQL.Parser
-open FSharp.Data.GraphQL.Server.AspNetCore
 
 module Phantom =