diff --git a/serde_v8/examples/basic.rs b/serde_v8/examples/basic.rs
index 67bae9f673..6567a51d8e 100644
--- a/serde_v8/examples/basic.rs
+++ b/serde_v8/examples/basic.rs
@@ -1,3 +1,4 @@
+// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
 use rusty_v8 as v8;
 
 use serde::Deserialize;
diff --git a/serde_v8/src/de.rs b/serde_v8/src/de.rs
index 22d66f7ce8..e1f009f761 100644
--- a/serde_v8/src/de.rs
+++ b/serde_v8/src/de.rs
@@ -1,3 +1,4 @@
+// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
 use rusty_v8 as v8;
 use serde::de::{self, Visitor};
 use serde::Deserialize;
diff --git a/serde_v8/src/error.rs b/serde_v8/src/error.rs
index effec4138f..047cec74bc 100644
--- a/serde_v8/src/error.rs
+++ b/serde_v8/src/error.rs
@@ -1,3 +1,4 @@
+// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
 use std::fmt::{self, Display};
 
 use serde::{de, ser};
diff --git a/serde_v8/src/keys.rs b/serde_v8/src/keys.rs
index 3e17e1c52e..ea989086c0 100644
--- a/serde_v8/src/keys.rs
+++ b/serde_v8/src/keys.rs
@@ -1,3 +1,4 @@
+// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
 use rusty_v8 as v8;
 
 use std::collections::HashMap;
diff --git a/serde_v8/src/lib.rs b/serde_v8/src/lib.rs
index cd20d6d17a..9413791bbd 100644
--- a/serde_v8/src/lib.rs
+++ b/serde_v8/src/lib.rs
@@ -1,3 +1,4 @@
+// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
 mod de;
 mod error;
 mod keys;
diff --git a/serde_v8/src/magic.rs b/serde_v8/src/magic.rs
index 8e6b2dfe55..2cb6224668 100644
--- a/serde_v8/src/magic.rs
+++ b/serde_v8/src/magic.rs
@@ -1,3 +1,4 @@
+// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
 use rusty_v8 as v8;
 
 use std::fmt;
diff --git a/serde_v8/src/payload.rs b/serde_v8/src/payload.rs
index 63562ac346..816158f93c 100644
--- a/serde_v8/src/payload.rs
+++ b/serde_v8/src/payload.rs
@@ -1,3 +1,4 @@
+// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
 use rusty_v8 as v8;
 
 // TODO: maybe add a Payload type that holds scope & v8::Value
diff --git a/serde_v8/src/ser.rs b/serde_v8/src/ser.rs
index 3970ddaab5..13a5c1d1cb 100644
--- a/serde_v8/src/ser.rs
+++ b/serde_v8/src/ser.rs
@@ -1,3 +1,4 @@
+// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
 use rusty_v8 as v8;
 use serde::ser;
 use serde::ser::{Impossible, Serialize};
diff --git a/serde_v8/src/utils.rs b/serde_v8/src/utils.rs
index f9f81837cf..8f2a7a1eba 100644
--- a/serde_v8/src/utils.rs
+++ b/serde_v8/src/utils.rs
@@ -1,3 +1,4 @@
+// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
 use rusty_v8 as v8;
 use std::sync::Once;
 
diff --git a/serde_v8/tests/de.rs b/serde_v8/tests/de.rs
index d0721c0f84..0762308191 100644
--- a/serde_v8/tests/de.rs
+++ b/serde_v8/tests/de.rs
@@ -1,3 +1,4 @@
+// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
 use rusty_v8 as v8;
 
 use serde::Deserialize;
diff --git a/serde_v8/tests/magic.rs b/serde_v8/tests/magic.rs
index 2825bcc9ad..9141a8daeb 100644
--- a/serde_v8/tests/magic.rs
+++ b/serde_v8/tests/magic.rs
@@ -1,3 +1,4 @@
+// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
 use rusty_v8 as v8;
 
 use serde::{Deserialize, Serialize};
diff --git a/serde_v8/tests/ser.rs b/serde_v8/tests/ser.rs
index 1da8f6ff23..e110b693c9 100644
--- a/serde_v8/tests/ser.rs
+++ b/serde_v8/tests/ser.rs
@@ -1,3 +1,4 @@
+// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
 use rusty_v8 as v8;
 
 use serde::Serialize;