diff --git a/Cargo.toml b/Cargo.toml
index b5d115e..d900a53 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,5 +12,7 @@ log = "0.4"
 tokio = { version = "1.2", features = ["macros", "rt"]}
 reqwest = "0.11"
 minidom = "0.13"
-url = "2.2"
+url = { version = "2.2", features = ["serde"] }
 bitflags = "1.2"
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
diff --git a/src/calendar.rs b/src/calendar.rs
index 251cbe7..4ac829b 100644
--- a/src/calendar.rs
+++ b/src/calendar.rs
@@ -2,6 +2,7 @@ use std::convert::TryFrom;
 use std::error::Error;
 
 use url::Url;
+use serde::{Deserialize, Serialize};
 
 use crate::task::Task;
 use crate::task::TaskId;
@@ -9,6 +10,7 @@ use crate::task::TaskId;
 use bitflags::bitflags;
 
 bitflags! {
+    #[derive(Serialize, Deserialize)]
     pub struct SupportedComponents: u8 {
         /// An event, such as a calendar meeting
         const EVENT = 1;
@@ -45,7 +47,7 @@ impl TryFrom<minidom::Element> for SupportedComponents {
 
 
 /// A Caldav Calendar
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
 pub struct Calendar {
     name: String,
     url: Url,
diff --git a/src/task.rs b/src/task.rs
index fa50166..d590ea8 100644
--- a/src/task.rs
+++ b/src/task.rs
@@ -1,7 +1,9 @@
+use serde::{Deserialize, Serialize};
+
 pub type TaskId = String; // This is an HTML "etag"
 
 /// A to-do task
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
 pub struct Task {
     id: TaskId,
     name: String,