diff --git a/src/array.rs b/src/array.rs
index e23227a..d80f4fd 100644
--- a/src/array.rs
+++ b/src/array.rs
@@ -30,7 +30,7 @@ pub type CFArrayEqualCallBack = *const u8;
 
 #[allow(dead_code)]
 #[repr(C)]
-#[deriving(Copy)]
+#[derive(Copy)]
 pub struct CFArrayCallBacks {
     version: CFIndex,
     retain: CFArrayRetainCallBack,
diff --git a/src/base.rs b/src/base.rs
index 68cbd69..5e4b334 100644
--- a/src/base.rs
+++ b/src/base.rs
@@ -35,7 +35,7 @@ pub type CFOptionFlags = u32;
 
 #[allow(dead_code)]
 #[repr(C)]
-#[deriving(Copy)]
+#[derive(Copy)]
 pub struct CFRange {
     location: CFIndex,
     length: CFIndex
diff --git a/src/dictionary.rs b/src/dictionary.rs
index 57b8822..00db38a 100644
--- a/src/dictionary.rs
+++ b/src/dictionary.rs
@@ -26,7 +26,7 @@ pub type CFDictionaryRetainCallBack = *const u8;
 
 #[allow(dead_code)]
 #[repr(C)]
-#[deriving(Copy)]
+#[derive(Copy)]
 pub struct CFDictionaryKeyCallBacks {
     version: CFIndex,
     retain: CFDictionaryRetainCallBack,
@@ -38,7 +38,7 @@ pub struct CFDictionaryKeyCallBacks {
 
 #[allow(dead_code)]
 #[repr(C)]
-#[deriving(Copy)]
+#[derive(Copy)]
 pub struct CFDictionaryValueCallBacks {
     version: CFIndex,
     retain: CFDictionaryRetainCallBack,
diff --git a/src/set.rs b/src/set.rs
index 4c32881..bbd78f4 100644
--- a/src/set.rs
+++ b/src/set.rs
@@ -23,7 +23,7 @@ pub type CFSetHashCallBack = *const u8;
 
 #[allow(dead_code)]
 #[repr(C)]
-#[deriving(Copy)]
+#[derive(Copy)]
 pub struct CFSetCallBacks {
     version: CFIndex,
     retain: CFSetRetainCallBack,