diff --git a/project.go b/project.go
index 24ca6db..8dfccf2 100644
--- a/project.go
+++ b/project.go
@@ -25,10 +25,10 @@ type ProjectList []struct {
 
 // ProjectCategory represents a single project category
 type ProjectCategory struct {
-	Self        string `json:"self" structs:"self"`
-	ID          string `json:"id" structs:"id"`
-	Name        string `json:"name" structs:"name"`
-	Description string `json:"description" structs:"description"`
+	Self        string `json:"self" structs:"self,omitempty"`
+	ID          string `json:"id" structs:"id,omitempty"`
+	Name        string `json:"name" structs:"name,omitempty"`
+	Description string `json:"description" structs:"description,omitempty"`
 }
 
 // Project represents a JIRA Project.
@@ -55,30 +55,30 @@ type Project struct {
 
 // Version represents a single release version of a project
 type Version struct {
-	Self            string `json:"self" structs:"self"`
-	ID              string `json:"id" structs:"id"`
-	Name            string `json:"name" structs:"name"`
-	Archived        bool   `json:"archived" structs:"archived"`
-	Released        bool   `json:"released" structs:"released"`
-	ReleaseDate     string `json:"releaseDate" structs:"releaseDate"`
-	UserReleaseDate string `json:"userReleaseDate" structs:"userReleaseDate"`
-	ProjectID       int    `json:"projectId" structs:"projectId"` // Unlike other IDs, this is returned as a number
+	Self            string `json:"self" structs:"self,omitempty"`
+	ID              string `json:"id" structs:"id,omitempty"`
+	Name            string `json:"name" structs:"name,omitempty"`
+	Archived        bool   `json:"archived" structs:"archived,omitempty"`
+	Released        bool   `json:"released" structs:"released,omitempty"`
+	ReleaseDate     string `json:"releaseDate" structs:"releaseDate,omitempty"`
+	UserReleaseDate string `json:"userReleaseDate" structs:"userReleaseDate,omitempty"`
+	ProjectID       int    `json:"projectId" structs:"projectId,omitempty"` // Unlike other IDs, this is returned as a number
 }
 
 // ProjectComponent represents a single component of a project
 type ProjectComponent struct {
-	Self                string `json:"self" structs:"self"`
-	ID                  string `json:"id" structs:"id"`
-	Name                string `json:"name" structs:"name"`
-	Description         string `json:"description" structs:"description"`
-	Lead                User   `json:"lead" structs:"lead"`
-	AssigneeType        string `json:"assigneeType" structs:"assigneeType"`
-	Assignee            User   `json:"assignee" structs:"assignee"`
-	RealAssigneeType    string `json:"realAssigneeType" structs:"realAssigneeType"`
-	RealAssignee        User   `json:"realAssignee" structs:"realAssignee"`
-	IsAssigneeTypeValid bool   `json:"isAssigneeTypeValid" structs:"isAssigneeTypeValid"`
-	Project             string `json:"project" structs:"project"`
-	ProjectID           int    `json:"projectId" structs:"projectId"`
+	Self                string `json:"self" structs:"self,omitempty"`
+	ID                  string `json:"id" structs:"id,omitempty"`
+	Name                string `json:"name" structs:"name,omitempty"`
+	Description         string `json:"description" structs:"description,omitempty"`
+	Lead                User   `json:"lead,omitempty" structs:"lead,omitempty"`
+	AssigneeType        string `json:"assigneeType" structs:"assigneeType,omitempty"`
+	Assignee            User   `json:"assignee" structs:"assignee,omitempty"`
+	RealAssigneeType    string `json:"realAssigneeType" structs:"realAssigneeType,omitempty"`
+	RealAssignee        User   `json:"realAssignee" structs:"realAssignee,omitempty"`
+	IsAssigneeTypeValid bool   `json:"isAssigneeTypeValid" structs:"isAssigneeTypeValid,omitempty"`
+	Project             string `json:"project" structs:"project,omitempty"`
+	ProjectID           int    `json:"projectId" structs:"projectId,omitempty"`
 }
 
 // GetList gets all projects form JIRA