diff --git a/src/client/response.rs b/src/client/response.rs
index 47a54cc..8f00329 100644
--- a/src/client/response.rs
+++ b/src/client/response.rs
@@ -21,7 +21,7 @@ pub trait FromResponse: Sized {
 }
 
 /// Response parse errors.
-#[derive(Debug, PartialEq, Eq)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub enum ParseError {
     /// Expected response to be of type.
     ExpectedType(&'static str),
@@ -56,7 +56,7 @@ impl Error for ParseError {
 }
 
 /// JSON helper for response parsing.
-#[derive(Debug)]
+#[derive(Debug, Clone, Copy, PartialEq)]
 pub struct JsonHelper<'a>(pub &'a Json);
 
 impl<'a> JsonHelper<'a> {
@@ -69,7 +69,7 @@ impl<'a> JsonHelper<'a> {
 }
 
 /// JSON object helper for response parsing.
-#[derive(Debug)]
+#[derive(Debug, Clone, Copy, PartialEq)]
 pub struct JsonObjectHelper<'a>(pub &'a json::Object);
 
 impl<'a> JsonObjectHelper<'a> {
diff --git a/src/error.rs b/src/error.rs
index 7d65502..8479438 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -10,7 +10,7 @@ use client::response::{FromResponse, ParseError, JsonHelper};
 /// OAuth 2.0 error codes.
 ///
 /// See [RFC 6749, section 5.2](http://tools.ietf.org/html/rfc6749#section-5.2).
-#[derive(Debug, PartialEq, Eq)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub enum OAuth2ErrorCode {
     /// The request is missing a required parameter, includes an unsupported parameter value (other
     /// than grant type), repeats a parameter, includes multiple credentials, utilizes more than
@@ -57,7 +57,7 @@ impl<'a> From<&'a str> for OAuth2ErrorCode {
 /// OAuth 2.0 error.
 ///
 /// See [RFC 6749, section 5.2](http://tools.ietf.org/html/rfc6749#section-5.2).
-#[derive(Debug, PartialEq, Eq)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub struct OAuth2Error {
     /// Error code.
     pub code: OAuth2ErrorCode,
diff --git a/src/lib.rs b/src/lib.rs
index 67a80ca..ffad986 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -126,6 +126,7 @@
 #![warn(
     missing_docs,
     missing_debug_implementations,
+    missing_copy_implementations,
     trivial_casts,
     trivial_numeric_casts,
     unused_extern_crates,
diff --git a/src/provider.rs b/src/provider.rs
index ca86a57..4c60d5d 100644
--- a/src/provider.rs
+++ b/src/provider.rs
@@ -25,7 +25,7 @@ pub trait Provider {
 ///
 /// See [Using OAuth 2.0 to Access Google
 /// APIs](https://developers.google.com/identity/protocols/OAuth2).
-#[derive(Debug)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub struct Google;
 impl Provider for Google {
     type Lifetime = Expiring;
@@ -37,7 +37,7 @@ impl Provider for Google {
 /// GitHub OAuth 2.0 provider.
 ///
 /// See [OAuth, GitHub Developer Guide](https://developer.github.com/v3/oauth/).
-#[derive(Debug)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub struct GitHub;
 impl Provider for GitHub {
     type Lifetime = Static;
@@ -49,7 +49,7 @@ impl Provider for GitHub {
 /// Imgur OAuth 2.0 provider.
 ///
 /// See [OAuth 2.0, Imgur](https://api.imgur.com/oauth2).
-#[derive(Debug)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub struct Imgur;
 impl Provider for Imgur {
     type Lifetime = Expiring;
diff --git a/src/token/bearer.rs b/src/token/bearer.rs
index 0ff675d..781162f 100644
--- a/src/token/bearer.rs
+++ b/src/token/bearer.rs
@@ -7,7 +7,7 @@ use client::response::{FromResponse, ParseError, JsonHelper};
 /// The bearer token type.
 ///
 /// See [RFC 6750](http://tools.ietf.org/html/rfc6750).
-#[derive(Debug, PartialEq, Eq, RustcEncodable, RustcDecodable)]
+#[derive(Debug, Clone, PartialEq, Eq, RustcEncodable, RustcDecodable)]
 pub struct Bearer<L: Lifetime> {
     access_token: String,
     scope: Option<String>,
diff --git a/src/token/expiring.rs b/src/token/expiring.rs
index 647eaf1..0ad8a1c 100644
--- a/src/token/expiring.rs
+++ b/src/token/expiring.rs
@@ -6,7 +6,7 @@ use super::Lifetime;
 use client::response::{FromResponse, ParseError, JsonHelper};
 
 /// An expiring token.
-#[derive(Debug, PartialEq, Eq)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub struct Expiring {
     refresh_token: String,
     expires: DateTime<UTC>,
diff --git a/src/token/statik.rs b/src/token/statik.rs
index d9ee569..3180588 100644
--- a/src/token/statik.rs
+++ b/src/token/statik.rs
@@ -4,7 +4,7 @@ use super::Lifetime;
 use client::response::{FromResponse, ParseError, JsonHelper};
 
 /// A static, non-expiring token.
-#[derive(Debug, PartialEq, Eq, RustcEncodable, RustcDecodable)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq, RustcEncodable, RustcDecodable)]
 pub struct Static;
 
 impl Lifetime for Static {