diff --git a/.changes/unreleased/NOTES-20231107-141609.yaml b/.changes/unreleased/NOTES-20231107-141609.yaml
new file mode 100644
index 0000000000..abee4f0952
--- /dev/null
+++ b/.changes/unreleased/NOTES-20231107-141609.yaml
@@ -0,0 +1,8 @@
+kind: NOTES
+body: 'helper/schema: While this Go module will not receive support for
+  provider-defined functions, the provider server is updated to handle the new
+  operations, which will be required to prevent errors when updating
+  terraform-plugin-framework or terraform-plugin-mux in the future.'
+time: 2023-11-07T14:16:09.783296-05:00
+custom:
+  Issue: "1288"
diff --git a/helper/schema/grpc_provider.go b/helper/schema/grpc_provider.go
index 287914683f..4ba774a1f2 100644
--- a/helper/schema/grpc_provider.go
+++ b/helper/schema/grpc_provider.go
@@ -80,6 +80,7 @@ func (s *GRPCProviderServer) GetMetadata(ctx context.Context, req *tfprotov5.Get
 
 	resp := &tfprotov5.GetMetadataResponse{
 		DataSources:        make([]tfprotov5.DataSourceMetadata, 0, len(s.provider.DataSourcesMap)),
+		Functions:          make([]tfprotov5.FunctionMetadata, 0),
 		Resources:          make([]tfprotov5.ResourceMetadata, 0, len(s.provider.ResourcesMap)),
 		ServerCapabilities: s.serverCapabilities(),
 	}
@@ -106,6 +107,7 @@ func (s *GRPCProviderServer) GetProviderSchema(ctx context.Context, req *tfproto
 
 	resp := &tfprotov5.GetProviderSchemaResponse{
 		DataSourceSchemas:  make(map[string]*tfprotov5.Schema, len(s.provider.DataSourcesMap)),
+		Functions:          make(map[string]*tfprotov5.Function, 0),
 		ResourceSchemas:    make(map[string]*tfprotov5.Schema, len(s.provider.ResourcesMap)),
 		ServerCapabilities: s.serverCapabilities(),
 	}
@@ -1271,6 +1273,36 @@ func (s *GRPCProviderServer) ReadDataSource(ctx context.Context, req *tfprotov5.
 	return resp, nil
 }
 
+func (s *GRPCProviderServer) CallFunction(ctx context.Context, req *tfprotov5.CallFunctionRequest) (*tfprotov5.CallFunctionResponse, error) {
+	ctx = logging.InitContext(ctx)
+
+	logging.HelperSchemaTrace(ctx, "Returning error for provider function call")
+
+	resp := &tfprotov5.CallFunctionResponse{
+		Diagnostics: []*tfprotov5.Diagnostic{
+			{
+				Severity: tfprotov5.DiagnosticSeverityError,
+				Summary:  "Function Not Found",
+				Detail:   fmt.Sprintf("No function named %q was found in the provider.", req.Name),
+			},
+		},
+	}
+
+	return resp, nil
+}
+
+func (s *GRPCProviderServer) GetFunctions(ctx context.Context, req *tfprotov5.GetFunctionsRequest) (*tfprotov5.GetFunctionsResponse, error) {
+	ctx = logging.InitContext(ctx)
+
+	logging.HelperSchemaTrace(ctx, "Getting provider functions")
+
+	resp := &tfprotov5.GetFunctionsResponse{
+		Functions: make(map[string]*tfprotov5.Function, 0),
+	}
+
+	return resp, nil
+}
+
 func pathToAttributePath(path cty.Path) *tftypes.AttributePath {
 	var steps []tftypes.AttributePathStep
 
diff --git a/helper/schema/grpc_provider_test.go b/helper/schema/grpc_provider_test.go
index e873084dcc..537d8fa1c8 100644
--- a/helper/schema/grpc_provider_test.go
+++ b/helper/schema/grpc_provider_test.go
@@ -2111,6 +2111,7 @@ func TestGRPCProviderServerGetMetadata(t *testing.T) {
 						TypeName: "test_datasource2",
 					},
 				},
+				Functions: []tfprotov5.FunctionMetadata{},
 				Resources: []tfprotov5.ResourceMetadata{},
 				ServerCapabilities: &tfprotov5.ServerCapabilities{
 					GetProviderSchemaOptional: true,
@@ -2137,6 +2138,7 @@ func TestGRPCProviderServerGetMetadata(t *testing.T) {
 						TypeName: "test_datasource2",
 					},
 				},
+				Functions: []tfprotov5.FunctionMetadata{},
 				Resources: []tfprotov5.ResourceMetadata{
 					{
 						TypeName: "test_resource1",
@@ -2159,6 +2161,7 @@ func TestGRPCProviderServerGetMetadata(t *testing.T) {
 			},
 			Expected: &tfprotov5.GetMetadataResponse{
 				DataSources: []tfprotov5.DataSourceMetadata{},
+				Functions:   []tfprotov5.FunctionMetadata{},
 				Resources: []tfprotov5.ResourceMetadata{
 					{
 						TypeName: "test_resource1",