diff --git a/github/event_types.go b/github/event_types.go
index 4e8dc55bd10..178df686f2f 100644
--- a/github/event_types.go
+++ b/github/event_types.go
@@ -1148,20 +1148,42 @@ type FieldValue struct {
 	To            json.RawMessage `json:"to,omitempty"`
 }
 
+// ProjectV2ItemFieldValue represents a field value of a project item.
+type ProjectV2ItemFieldValue struct {
+	ID       *int64 `json:"id,omitempty"`
+	Name     string `json:"name,omitempty"`
+	DataType string `json:"data_type,omitempty"`
+	// Value set for the field. The type depends on the field type:
+	//   - text: string
+	//   - number: float64
+	//   - date: string (ISO 8601 date format, e.g. "2023-06-23") or null
+	//   - single_select: object with "id", "name", "color", "description" fields or null
+	//   - iteration: object with "id", "title", "start_date", "duration" fields or null
+	//   - title: object with "text" field (read-only, reflects the item's title) or null
+	//   - assignees: array of user objects with "login", "id", etc. or null
+	//   - labels: array of label objects with "id", "name", "color", etc. or null
+	//   - linked_pull_requests: array of pull request objects or null
+	//   - milestone: milestone object with "id", "title", "description", etc. or null
+	//   - repository: repository object with "id", "name", "full_name", etc. or null
+	//   - reviewers: array of user objects or null
+	//   - status: object with "id", "name", "color", "description" fields (same structure as single_select) or null
+	Value any `json:"value,omitempty"`
+}
+
 // ProjectV2Item represents an item belonging to a project.
 type ProjectV2Item struct {
-	ID            *int64            `json:"id,omitempty"`
-	NodeID        *string           `json:"node_id,omitempty"`
-	ProjectNodeID *string           `json:"project_node_id,omitempty"`
-	ContentNodeID *string           `json:"content_node_id,omitempty"`
-	ProjectURL    *string           `json:"project_url,omitempty"`
-	ContentType   *string           `json:"content_type,omitempty"`
-	Creator       *User             `json:"creator,omitempty"`
-	CreatedAt     *Timestamp        `json:"created_at,omitempty"`
-	UpdatedAt     *Timestamp        `json:"updated_at,omitempty"`
-	ArchivedAt    *Timestamp        `json:"archived_at,omitempty"`
-	ItemURL       *string           `json:"item_url,omitempty"`
-	Fields        []*ProjectV2Field `json:"fields,omitempty"`
+	ID            *int64                     `json:"id,omitempty"`
+	NodeID        *string                    `json:"node_id,omitempty"`
+	ProjectNodeID *string                    `json:"project_node_id,omitempty"`
+	ContentNodeID *string                    `json:"content_node_id,omitempty"`
+	ProjectURL    *string                    `json:"project_url,omitempty"`
+	ContentType   *string                    `json:"content_type,omitempty"`
+	Creator       *User                      `json:"creator,omitempty"`
+	CreatedAt     *Timestamp                 `json:"created_at,omitempty"`
+	UpdatedAt     *Timestamp                 `json:"updated_at,omitempty"`
+	ArchivedAt    *Timestamp                 `json:"archived_at,omitempty"`
+	ItemURL       *string                    `json:"item_url,omitempty"`
+	Fields        []*ProjectV2ItemFieldValue `json:"fields,omitempty"`
 }
 
 // PublicEvent is triggered when a private repository is open sourced.
diff --git a/github/github-accessors.go b/github/github-accessors.go
index 688f924090c..bba6f7a169a 100644
--- a/github/github-accessors.go
+++ b/github/github-accessors.go
@@ -19326,12 +19326,12 @@ func (p *ProjectV2FieldIteration) GetStartDate() string {
 	return *p.StartDate
 }
 
-// GetTitle returns the Title field if it's non-nil, zero value otherwise.
-func (p *ProjectV2FieldIteration) GetTitle() string {
-	if p == nil || p.Title == nil {
-		return ""
+// GetTitle returns the Title field.
+func (p *ProjectV2FieldIteration) GetTitle() *ProjectV2TextContent {
+	if p == nil {
+		return nil
 	}
-	return *p.Title
+	return p.Title
 }
 
 // GetColor returns the Color field if it's non-nil, zero value otherwise.
@@ -19342,12 +19342,12 @@ func (p *ProjectV2FieldOption) GetColor() string {
 	return *p.Color
 }
 
-// GetDescription returns the Description field if it's non-nil, zero value otherwise.
-func (p *ProjectV2FieldOption) GetDescription() string {
-	if p == nil || p.Description == nil {
-		return ""
+// GetDescription returns the Description field.
+func (p *ProjectV2FieldOption) GetDescription() *ProjectV2TextContent {
+	if p == nil {
+		return nil
 	}
-	return *p.Description
+	return p.Description
 }
 
 // GetID returns the ID field if it's non-nil, zero value otherwise.
@@ -19358,12 +19358,12 @@ func (p *ProjectV2FieldOption) GetID() string {
 	return *p.ID
 }
 
-// GetName returns the Name field if it's non-nil, zero value otherwise.
-func (p *ProjectV2FieldOption) GetName() string {
-	if p == nil || p.Name == nil {
-		return ""
+// GetName returns the Name field.
+func (p *ProjectV2FieldOption) GetName() *ProjectV2TextContent {
+	if p == nil {
+		return nil
 	}
-	return *p.Name
+	return p.Name
 }
 
 // GetArchivedAt returns the ArchivedAt field if it's non-nil, zero value otherwise.
@@ -19518,6 +19518,30 @@ func (p *ProjectV2ItemEvent) GetSender() *User {
 	return p.Sender
 }
 
+// GetID returns the ID field if it's non-nil, zero value otherwise.
+func (p *ProjectV2ItemFieldValue) GetID() int64 {
+	if p == nil || p.ID == nil {
+		return 0
+	}
+	return *p.ID
+}
+
+// GetHTML returns the HTML field if it's non-nil, zero value otherwise.
+func (p *ProjectV2TextContent) GetHTML() string {
+	if p == nil || p.HTML == nil {
+		return ""
+	}
+	return *p.HTML
+}
+
+// GetRaw returns the Raw field if it's non-nil, zero value otherwise.
+func (p *ProjectV2TextContent) GetRaw() string {
+	if p == nil || p.Raw == nil {
+		return ""
+	}
+	return *p.Raw
+}
+
 // GetAllowDeletions returns the AllowDeletions field.
 func (p *Protection) GetAllowDeletions() *AllowDeletions {
 	if p == nil {
diff --git a/github/github-accessors_test.go b/github/github-accessors_test.go
index b1c46d5a26c..69d58790f66 100644
--- a/github/github-accessors_test.go
+++ b/github/github-accessors_test.go
@@ -25110,10 +25110,7 @@ func TestProjectV2FieldIteration_GetStartDate(tt *testing.T) {
 
 func TestProjectV2FieldIteration_GetTitle(tt *testing.T) {
 	tt.Parallel()
-	var zeroValue string
-	p := &ProjectV2FieldIteration{Title: &zeroValue}
-	p.GetTitle()
-	p = &ProjectV2FieldIteration{}
+	p := &ProjectV2FieldIteration{}
 	p.GetTitle()
 	p = nil
 	p.GetTitle()
@@ -25132,10 +25129,7 @@ func TestProjectV2FieldOption_GetColor(tt *testing.T) {
 
 func TestProjectV2FieldOption_GetDescription(tt *testing.T) {
 	tt.Parallel()
-	var zeroValue string
-	p := &ProjectV2FieldOption{Description: &zeroValue}
-	p.GetDescription()
-	p = &ProjectV2FieldOption{}
+	p := &ProjectV2FieldOption{}
 	p.GetDescription()
 	p = nil
 	p.GetDescription()
@@ -25154,10 +25148,7 @@ func TestProjectV2FieldOption_GetID(tt *testing.T) {
 
 func TestProjectV2FieldOption_GetName(tt *testing.T) {
 	tt.Parallel()
-	var zeroValue string
-	p := &ProjectV2FieldOption{Name: &zeroValue}
-	p.GetName()
-	p = &ProjectV2FieldOption{}
+	p := &ProjectV2FieldOption{}
 	p.GetName()
 	p = nil
 	p.GetName()
@@ -25348,6 +25339,39 @@ func TestProjectV2ItemEvent_GetSender(tt *testing.T) {
 	p.GetSender()
 }
 
+func TestProjectV2ItemFieldValue_GetID(tt *testing.T) {
+	tt.Parallel()
+	var zeroValue int64
+	p := &ProjectV2ItemFieldValue{ID: &zeroValue}
+	p.GetID()
+	p = &ProjectV2ItemFieldValue{}
+	p.GetID()
+	p = nil
+	p.GetID()
+}
+
+func TestProjectV2TextContent_GetHTML(tt *testing.T) {
+	tt.Parallel()
+	var zeroValue string
+	p := &ProjectV2TextContent{HTML: &zeroValue}
+	p.GetHTML()
+	p = &ProjectV2TextContent{}
+	p.GetHTML()
+	p = nil
+	p.GetHTML()
+}
+
+func TestProjectV2TextContent_GetRaw(tt *testing.T) {
+	tt.Parallel()
+	var zeroValue string
+	p := &ProjectV2TextContent{Raw: &zeroValue}
+	p.GetRaw()
+	p = &ProjectV2TextContent{}
+	p.GetRaw()
+	p = nil
+	p.GetRaw()
+}
+
 func TestProtection_GetAllowDeletions(tt *testing.T) {
 	tt.Parallel()
 	p := &Protection{}
diff --git a/github/projects.go b/github/projects.go
index 1ccadaeaae5..af602bc5657 100644
--- a/github/projects.go
+++ b/github/projects.go
@@ -74,15 +74,24 @@ type ListProjectsOptions struct {
 	Query *string `url:"q,omitempty"`
 }
 
+// ProjectV2TextContent represents text content in a project field option or iteration.
+// It includes both HTML and raw text representations.
+//
+// GitHub API docs: https://docs.github.com/rest/projects/fields
+type ProjectV2TextContent struct {
+	HTML *string `json:"html,omitempty"`
+	Raw  *string `json:"raw,omitempty"`
+}
+
 // ProjectV2FieldOption represents an option for a project field of type single_select or multi_select.
 // It defines the available choices that can be selected for dropdown-style fields.
 //
 // GitHub API docs: https://docs.github.com/rest/projects/fields
 type ProjectV2FieldOption struct {
-	ID          *string `json:"id,omitempty"`          // The unique identifier for this option.
-	Name        *string `json:"name,omitempty"`        // The display name of the option.
-	Color       *string `json:"color,omitempty"`       // The color associated with this option (e.g., "blue", "red").
-	Description *string `json:"description,omitempty"` // An optional description for this option.
+	ID          *string               `json:"id,omitempty"`          // The unique identifier for this option.
+	Color       *string               `json:"color,omitempty"`       // The color associated with this option (e.g., "blue", "red").
+	Description *ProjectV2TextContent `json:"description,omitempty"` // An optional description for this option.
+	Name        *ProjectV2TextContent `json:"name,omitempty"`        // The display name of the option.
 }
 
 // ProjectV2FieldIteration represents an iteration within a project field of type iteration.
@@ -90,10 +99,10 @@ type ProjectV2FieldOption struct {
 //
 // GitHub API docs: https://docs.github.com/rest/projects/fields
 type ProjectV2FieldIteration struct {
-	ID        *string `json:"id,omitempty"`         // The unique identifier for the iteration.
-	Title     *string `json:"title,omitempty"`      // The title of the iteration.
-	StartDate *string `json:"start_date,omitempty"` // The start date of the iteration in ISO 8601 format.
-	Duration  *int    `json:"duration,omitempty"`   // The duration of the iteration in seconds.
+	ID        *string               `json:"id,omitempty"`         // The unique identifier for the iteration.
+	Title     *ProjectV2TextContent `json:"title,omitempty"`      // The title of the iteration.
+	StartDate *string               `json:"start_date,omitempty"` // The start date of the iteration in ISO 8601 format.
+	Duration  *int                  `json:"duration,omitempty"`   // The duration of the iteration in seconds.
 }
 
 // ProjectV2FieldConfiguration represents the configuration for a project field of type iteration.
@@ -325,14 +334,31 @@ type AddProjectItemOptions struct {
 	ID   int64  `json:"id,omitempty"`
 }
 
+// UpdateProjectV2Field represents a field update for a project item.
+//
+// GitHub API docs: https://docs.github.com/rest/projects/items#update-project-item-for-organization
+type UpdateProjectV2Field struct {
+	// ID is the field ID to update.
+	ID int64 `json:"id"`
+	// Value is the new value to set for the field. The type depends on the field type.
+	// For text fields: string
+	// For number fields: float64 or int
+	// For single_select fields: string (option ID)
+	// For date fields: string (ISO 8601 date)
+	// For iteration fields: string (iteration ID)
+	// Note: Some field types (title, assignees, labels, etc.) are read-only or managed through other API endpoints.
+	Value any `json:"value"`
+}
+
 // UpdateProjectItemOptions represents fields that can be modified for a project item.
-// Currently the REST API allows archiving/unarchiving an item (archived boolean).
-// This struct can be expanded in the future as the API grows.
+// The GitHub API expects either archived status updates or field value updates.
 type UpdateProjectItemOptions struct {
 	// Archived indicates whether the item should be archived (true) or unarchived (false).
+	// This is used for archive/unarchive operations.
 	Archived *bool `json:"archived,omitempty"`
-	// Fields allows updating field values for the item. Each entry supplies a field ID and a value.
-	Fields []*ProjectV2Field `json:"fields,omitempty"`
+	// Fields contains field updates to apply to the project item.
+	// Each entry specifies a field ID and its new value.
+	Fields []*UpdateProjectV2Field `json:"fields,omitempty"`
 }
 
 // ListOrganizationProjectItems lists items for an organization owned project.
@@ -387,7 +413,11 @@ func (s *ProjectsService) AddOrganizationProjectItem(ctx context.Context, org st
 //meta:operation GET /orgs/{org}/projectsV2/{project_number}/items/{item_id}
 func (s *ProjectsService) GetOrganizationProjectItem(ctx context.Context, org string, projectNumber int, itemID int64, opts *GetProjectItemOptions) (*ProjectV2Item, *Response, error) {
 	u := fmt.Sprintf("orgs/%v/projectsV2/%v/items/%v", org, projectNumber, itemID)
-	req, err := s.client.NewRequest("GET", u, opts)
+	u, err := addOptions(u, opts)
+	if err != nil {
+		return nil, nil, err
+	}
+	req, err := s.client.NewRequest("GET", u, nil)
 	if err != nil {
 		return nil, nil, err
 	}
@@ -481,7 +511,11 @@ func (s *ProjectsService) AddUserProjectItem(ctx context.Context, username strin
 //meta:operation GET /users/{username}/projectsV2/{project_number}/items/{item_id}
 func (s *ProjectsService) GetUserProjectItem(ctx context.Context, username string, projectNumber int, itemID int64, opts *GetProjectItemOptions) (*ProjectV2Item, *Response, error) {
 	u := fmt.Sprintf("users/%v/projectsV2/%v/items/%v", username, projectNumber, itemID)
-	req, err := s.client.NewRequest("GET", u, opts)
+	u, err := addOptions(u, opts)
+	if err != nil {
+		return nil, nil, err
+	}
+	req, err := s.client.NewRequest("GET", u, nil)
 	if err != nil {
 		return nil, nil, err
 	}
diff --git a/github/projects_test.go b/github/projects_test.go
index 4bb656b9e4b..4b30b3d4ecb 100644
--- a/github/projects_test.go
+++ b/github/projects_test.go
@@ -185,8 +185,8 @@ func TestProjectsService_ListOrganizationProjectFields(t *testing.T) {
 			"data_type": "single_select",
 			"url": "https://api.github.com/projects/1/fields/field1",
 			"options": [
-				{"id": "1", "name": "Todo", "color": "blue", "description": "Tasks to be done"},
-				{"id": "2", "name": "In Progress", "color": "yellow"}
+				{"id": "1", "name": {"raw": "Todo", "html": "Todo"}, "color": "blue", "description": {"raw": "Tasks to be done", "html": "Tasks to be done"}},
+				{"id": "2", "name": {"raw": "In Progress", "html": "In Progress"}, "color": "yellow"}
 			],
 			"created_at": "2011-01-02T15:04:05Z",
 			"updated_at": "2012-01-02T15:04:05Z"
@@ -254,8 +254,8 @@ func TestProjectsService_ListUserProjectFields(t *testing.T) {
 			"data_type": "single_select",
 			"url": "https://api.github.com/projects/1/fields/field1",
 			"options": [
-				{"id": "1", "name": "Todo", "color": "blue", "description": "Tasks to be done"},
-				{"id": "2", "name": "In Progress", "color": "yellow"}
+				{"id": "1", "name": {"raw": "Todo", "html": "Todo"}, "color": "blue", "description": {"raw": "Tasks to be done", "html": "Tasks to be done"}},
+				{"id": "2", "name": {"raw": "In Progress", "html": "In Progress"}, "color": "yellow"}
 			],
 			"created_at": "2011-01-02T15:04:05Z",
 			"updated_at": "2012-01-02T15:04:05Z"
@@ -317,8 +317,8 @@ func TestProjectsService_GetOrganizationProjectField(t *testing.T) {
 			"data_type": "single_select",
 			"url": "https://api.github.com/projects/1/fields/field1",
 			"options": [
-				{"id": "1", "name": "Todo", "color": "blue", "description": "Tasks to be done"},
-				{"id": "2", "name": "In Progress", "color": "yellow"}
+				{"id": "1", "name": {"raw": "Todo", "html": "Todo"}, "color": "blue", "description": {"raw": "Tasks to be done", "html": "Tasks to be done"}},
+				{"id": "2", "name": {"raw": "In Progress", "html": "In Progress"}, "color": "yellow"}
 			],
 			"created_at": "2011-01-02T15:04:05Z",
 			"updated_at": "2012-01-02T15:04:05Z"
@@ -358,8 +358,8 @@ func TestProjectsService_GetUserProjectField(t *testing.T) {
 			"data_type": "single_select",
 			"url": "https://api.github.com/projects/1/fields/field3",
 			"options": [
-				{"id": "1", "name": "Done", "color": "red", "description": "Done task"},
-				{"id": "2", "name": "In Progress", "color": "yellow"}
+				{"id": "1", "name": {"raw": "Done", "html": "Done"}, "color": "red", "description": {"raw": "Done task", "html": "Done task"}},
+				{"id": "2", "name": {"raw": "In Progress", "html": "In Progress"}, "color": "yellow"}
 			],
 			"created_at": "2011-01-02T15:04:05Z",
 			"updated_at": "2012-01-02T15:04:05Z"
@@ -589,9 +589,9 @@ func TestProjectV2Field_Marshal(t *testing.T) {
 		Options: []*ProjectV2FieldOption{
 			{
 				ID:          Ptr("1"),
-				Name:        Ptr("Todo"),
+				Name:        &ProjectV2TextContent{Raw: Ptr("Todo"), HTML: Ptr("Todo")},
 				Color:       Ptr("blue"),
-				Description: Ptr("Tasks to be done"),
+				Description: &ProjectV2TextContent{Raw: Ptr("Tasks to be done"), HTML: Ptr("Tasks to be done")},
 			},
 		},
 		CreatedAt: &Timestamp{referenceTime},
@@ -607,9 +607,15 @@ func TestProjectV2Field_Marshal(t *testing.T) {
         "options": [
             {
                 "id": "1",
-                "name": "Todo",
                 "color": "blue",
-                "description": "Tasks to be done"
+                "description": {
+                    "raw": "Tasks to be done",
+                    "html": "Tasks to be done"
+                },
+                "name": {
+                    "raw": "Todo",
+                    "html": "Todo"
+                }
             }
         ],
         "created_at": ` + referenceTimeStr + `,
@@ -638,13 +644,13 @@ func TestProjectV2FieldConfiguration_Marshal(t *testing.T) {
 			Iterations: []*ProjectV2FieldIteration{
 				{
 					ID:        Ptr("iter_1"),
-					Title:     Ptr("Sprint 1"),
+					Title:     &ProjectV2TextContent{Raw: Ptr("Sprint 1"), HTML: Ptr("Sprint 1")},
 					StartDate: Ptr("2025-01-06"),
 					Duration:  Ptr(1209600),
 				},
 				{
 					ID:        Ptr("iter_2"),
-					Title:     Ptr("Sprint 2"),
+					Title:     &ProjectV2TextContent{Raw: Ptr("Sprint 2"), HTML: Ptr("Sprint 2")},
 					StartDate: Ptr("2025-01-20"),
 					Duration:  Ptr(1209600),
 				},
@@ -666,13 +672,19 @@ func TestProjectV2FieldConfiguration_Marshal(t *testing.T) {
             "iterations": [
                 {
                     "id": "iter_1",
-                    "title": "Sprint 1",
+                    "title": {
+                        "raw": "Sprint 1",
+                        "html": "Sprint 1"
+                    },
                     "start_date": "2025-01-06",
                     "duration": 1209600
                 },
                 {
                     "id": "iter_2",
-                    "title": "Sprint 2",
+                    "title": {
+                        "raw": "Sprint 2",
+                        "html": "Sprint 2"
+                    },
                     "start_date": "2025-01-20",
                     "duration": 1209600
                 }
@@ -691,7 +703,7 @@ func TestProjectV2FieldConfiguration_Marshal(t *testing.T) {
 		Iterations: []*ProjectV2FieldIteration{
 			{
 				ID:        Ptr("config_iter_1"),
-				Title:     Ptr("Week 1"),
+				Title:     &ProjectV2TextContent{Raw: Ptr("Week 1"), HTML: Ptr("Week 1")},
 				StartDate: Ptr("2025-01-01"),
 				Duration:  Ptr(604800),
 			},
@@ -704,7 +716,10 @@ func TestProjectV2FieldConfiguration_Marshal(t *testing.T) {
         "iterations": [
             {
                 "id": "config_iter_1",
-                "title": "Week 1",
+                "title": {
+                    "raw": "Week 1",
+                    "html": "Week 1"
+                },
                 "start_date": "2025-01-01",
                 "duration": 604800
             }
@@ -716,14 +731,17 @@ func TestProjectV2FieldConfiguration_Marshal(t *testing.T) {
 	// Test iteration struct by itself
 	iteration := &ProjectV2FieldIteration{
 		ID:        Ptr("single_iter"),
-		Title:     Ptr("Test Iteration"),
+		Title:     &ProjectV2TextContent{Raw: Ptr("Test Iteration"), HTML: Ptr("Test Iteration")},
 		StartDate: Ptr("2025-02-01"),
 		Duration:  Ptr(1209600),
 	}
 
 	iterationWant := `{
         "id": "single_iter",
-        "title": "Test Iteration",
+        "title": {
+            "raw": "Test Iteration",
+            "html": "Test Iteration"
+        },
         "start_date": "2025-02-01",
         "duration": 1209600
     }`
@@ -855,6 +873,48 @@ func TestProjectsService_GetOrganizationProjectItem_error(t *testing.T) {
 	})
 }
 
+func TestProjectsService_GetOrganizationProjectItem_WithFieldsOption(t *testing.T) {
+	t.Parallel()
+	client, mux, _ := setup(t)
+	mux.HandleFunc("/orgs/o/projectsV2/1/items/17", func(w http.ResponseWriter, r *http.Request) {
+		testMethod(t, r, "GET")
+		// Verify that fields option is properly added as comma-separated URL parameter
+		testFormValues(t, r, values{"fields": "123,456,789"})
+		fmt.Fprint(w, `{
+			"id":17,
+			"node_id":"PVTI_node_fields",
+			"fields":[
+				{"id":123,"name":"Status","data_type":"single_select"},
+				{"id":456,"name":"Priority","data_type":"single_select"},
+				{"id":789,"name":"Assignee","data_type":"text"}
+			]
+		}`)
+	})
+	ctx := t.Context()
+	opts := &GetProjectItemOptions{
+		Fields: []int64{123, 456, 789}, // Request specific field IDs
+	}
+	item, _, err := client.Projects.GetOrganizationProjectItem(ctx, "o", 1, 17, opts)
+	if err != nil {
+		t.Fatalf("GetOrganizationProjectItem error: %v", err)
+	}
+	if item.GetID() != 17 {
+		t.Fatalf("unexpected item: %+v", item)
+	}
+	const methodName = "GetOrganizationProjectItemWithFields"
+	testBadOptions(t, methodName, func() (err error) {
+		_, _, err = client.Projects.GetOrganizationProjectItem(ctx, "\n", 1, 17, opts)
+		return err
+	})
+	testNewRequestAndDoFailure(t, methodName, client, func() (*Response, error) {
+		got, resp, err := client.Projects.GetOrganizationProjectItem(ctx, "o", 1, 17, opts)
+		if got != nil {
+			t.Errorf("testNewRequestAndDoFailure %v = %#v, want nil", methodName, got)
+		}
+		return resp, err
+	})
+}
+
 func TestProjectsService_UpdateOrganizationProjectItem(t *testing.T) {
 	t.Parallel()
 	client, mux, _ := setup(t)
@@ -897,6 +957,50 @@ func TestProjectsService_UpdateOrganizationProjectItem_error(t *testing.T) {
 	})
 }
 
+func TestProjectsService_UpdateOrganizationProjectItem_WithFieldUpdates(t *testing.T) {
+	t.Parallel()
+	client, mux, _ := setup(t)
+	mux.HandleFunc("/orgs/o/projectsV2/1/items/17", func(w http.ResponseWriter, r *http.Request) {
+		testMethod(t, r, "PATCH")
+		b, _ := io.ReadAll(r.Body)
+		body := string(b)
+		// Verify the field updates are properly formatted in the request body
+		expectedBody := `{"fields":[{"id":123,"value":"Updated text value"},{"id":456,"value":"Done"}]}`
+		if body != expectedBody+"\n" {
+			t.Fatalf("unexpected body: %s, expected: %s", body, expectedBody)
+		}
+		fmt.Fprint(w, `{"id":17,"node_id":"PVTI_node_updated"}`)
+	})
+
+	ctx := t.Context()
+	opts := &UpdateProjectItemOptions{
+		Fields: []*UpdateProjectV2Field{
+			{ID: 123, Value: "Updated text value"},
+			{ID: 456, Value: "Done"},
+		},
+	}
+	item, _, err := client.Projects.UpdateOrganizationProjectItem(ctx, "o", 1, 17, opts)
+	if err != nil {
+		t.Fatalf("UpdateOrganizationProjectItem error: %v", err)
+	}
+	if item.GetID() != 17 {
+		t.Fatalf("unexpected item: %+v", item)
+	}
+
+	const methodName = "UpdateOrganizationProjectItemWithFields"
+	testBadOptions(t, methodName, func() (err error) {
+		_, _, err = client.Projects.UpdateOrganizationProjectItem(ctx, "\n", 1, 17, opts)
+		return err
+	})
+	testNewRequestAndDoFailure(t, methodName, client, func() (*Response, error) {
+		got, resp, err := client.Projects.UpdateOrganizationProjectItem(ctx, "o", 1, 17, opts)
+		if got != nil {
+			t.Errorf("testNewRequestAndDoFailure %v = %#v, want nil", methodName, got)
+		}
+		return resp, err
+	})
+}
+
 func TestProjectsService_DeleteOrganizationProjectItem(t *testing.T) {
 	t.Parallel()
 	client, mux, _ := setup(t)
@@ -1040,6 +1144,48 @@ func TestProjectsService_GetUserProjectItem_error(t *testing.T) {
 	})
 }
 
+func TestProjectsService_GetUserProjectItem_WithFieldsOption(t *testing.T) {
+	t.Parallel()
+	client, mux, _ := setup(t)
+	mux.HandleFunc("/users/u/projectsV2/2/items/55", func(w http.ResponseWriter, r *http.Request) {
+		testMethod(t, r, "GET")
+		// Verify that fields option is properly added as comma-separated URL parameter
+		testFormValues(t, r, values{"fields": "100,200"})
+		fmt.Fprint(w, `{
+			"id":55,
+			"node_id":"PVTI_user_item_fields",
+			"fields":[
+				{"id":100,"name":"Status","data_type":"single_select"},
+				{"id":200,"name":"Milestone","data_type":"text"}
+			]
+		}`)
+	})
+	ctx := t.Context()
+	opts := &GetProjectItemOptions{
+		Fields: []int64{100, 200}, // Request specific field IDs
+	}
+	item, _, err := client.Projects.GetUserProjectItem(ctx, "u", 2, 55, opts)
+	if err != nil {
+		t.Fatalf("GetUserProjectItem error: %v", err)
+	}
+	if item.GetID() != 55 {
+		t.Fatalf("unexpected item: %+v", item)
+	}
+
+	const methodName = "GetUserProjectItemWithFields"
+	testBadOptions(t, methodName, func() (err error) {
+		_, _, err = client.Projects.GetUserProjectItem(ctx, "\n", 2, 55, opts)
+		return err
+	})
+	testNewRequestAndDoFailure(t, methodName, client, func() (*Response, error) {
+		got, resp, err := client.Projects.GetUserProjectItem(ctx, "u", 2, 55, opts)
+		if got != nil {
+			t.Errorf("testNewRequestAndDoFailure %v = %#v, want nil", methodName, got)
+		}
+		return resp, err
+	})
+}
+
 func TestProjectsService_UpdateUserProjectItem(t *testing.T) {
 	t.Parallel()
 	client, mux, _ := setup(t)
@@ -1082,6 +1228,50 @@ func TestProjectsService_UpdateUserProjectItem_error(t *testing.T) {
 	})
 }
 
+func TestProjectsService_UpdateUserProjectItem_WithFieldUpdates(t *testing.T) {
+	t.Parallel()
+	client, mux, _ := setup(t)
+	mux.HandleFunc("/users/u/projectsV2/2/items/55", func(w http.ResponseWriter, r *http.Request) {
+		testMethod(t, r, "PATCH")
+		b, _ := io.ReadAll(r.Body)
+		body := string(b)
+		// Verify the field updates are properly formatted in the request body
+		expectedBody := `{"fields":[{"id":100,"value":"In Progress"},{"id":200,"value":5}]}`
+		if body != expectedBody+"\n" {
+			t.Fatalf("unexpected body: %s, expected: %s", body, expectedBody)
+		}
+		fmt.Fprint(w, `{"id":55,"node_id":"PVTI_user_updated"}`)
+	})
+
+	ctx := t.Context()
+	opts := &UpdateProjectItemOptions{
+		Fields: []*UpdateProjectV2Field{
+			{ID: 100, Value: "In Progress"},
+			{ID: 200, Value: 5}, // number field
+		},
+	}
+	item, _, err := client.Projects.UpdateUserProjectItem(ctx, "u", 2, 55, opts)
+	if err != nil {
+		t.Fatalf("UpdateUserProjectItem error: %v", err)
+	}
+	if item.GetID() != 55 {
+		t.Fatalf("unexpected item: %+v", item)
+	}
+
+	const methodName = "UpdateUserProjectItemWithFields"
+	testBadOptions(t, methodName, func() (err error) {
+		_, _, err = client.Projects.UpdateUserProjectItem(ctx, "\n", 2, 55, opts)
+		return err
+	})
+	testNewRequestAndDoFailure(t, methodName, client, func() (*Response, error) {
+		got, resp, err := client.Projects.UpdateUserProjectItem(ctx, "u", 2, 55, opts)
+		if got != nil {
+			t.Errorf("testNewRequestAndDoFailure %v = %#v, want nil", methodName, got)
+		}
+		return resp, err
+	})
+}
+
 func TestProjectsService_DeleteUserProjectItem(t *testing.T) {
 	t.Parallel()
 	client, mux, _ := setup(t)