diff --git a/Cargo.toml b/Cargo.toml
index 183871e..3ae4854 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,7 +16,5 @@ serde_json = "1"
 serde_derive = "1"
 
 [dependencies.chrono]
-# Locked to 0.3.0 since chrono 0.3.1 uses serde ^1, which is incompatible
-# with serde 0.9 specified above.
-version = "0.3"
+version = "0.4"
 features = ["serde"]
diff --git a/src/entities/account.rs b/src/entities/account.rs
index a52f6c8..451c92b 100644
--- a/src/entities/account.rs
+++ b/src/entities/account.rs
@@ -12,7 +12,7 @@ pub struct Account {
     pub header: String,
     pub header_static: String,
     pub locked: bool,
-    pub created_at: DateTime<UTC>,
+    pub created_at: DateTime<Utc>,
     pub followers_count: u64,
     pub following_count: u64,
     pub statuses_count: u64,
diff --git a/src/entities/notification.rs b/src/entities/notification.rs
index 4e71e4d..058bec0 100644
--- a/src/entities/notification.rs
+++ b/src/entities/notification.rs
@@ -7,7 +7,7 @@ pub struct Notification {
     pub id: u64,
     #[serde(rename = "type")]
     pub notification_type: NotificationType,
-    pub created_at: DateTime<UTC>,
+    pub created_at: DateTime<Utc>,
     pub account: Account,
     pub status: Option<Status>,
 }
diff --git a/src/entities/status.rs b/src/entities/status.rs
index 720ba59..3d59605 100644
--- a/src/entities/status.rs
+++ b/src/entities/status.rs
@@ -12,7 +12,7 @@ pub struct Status {
     pub in_reply_to_account_id: Option<u64>,
     pub reblog: Option<Box<Status>>,
     pub content: String,
-    pub created_at: DateTime<UTC>,
+    pub created_at: DateTime<Utc>,
     pub reblogs_count: u64,
     pub favourites_count: u64,
     pub reblogged: Option<bool>,