diff --git a/README.md b/README.md
index 9f480b18..b46ceef3 100644
--- a/README.md
+++ b/README.md
@@ -16,8 +16,6 @@ You may be looking for:
 ## Serde in action
 
 ```rust
-#![feature(proc_macro)]
-
 #[macro_use]
 extern crate serde_derive;
 
diff --git a/serde_derive/src/lib.rs b/serde_derive/src/lib.rs
index c625404e..38953f5b 100644
--- a/serde_derive/src/lib.rs
+++ b/serde_derive/src/lib.rs
@@ -1,5 +1,3 @@
-#![feature(proc_macro, proc_macro_lib)]
-
 extern crate proc_macro;
 extern crate serde_codegen;
 
diff --git a/serde_derive/tests/compile-fail/duplicate-attribute/rename-and-ser.rs b/serde_derive/tests/compile-fail/duplicate-attribute/rename-and-ser.rs
index 2f3950f8..2f904a1f 100644
--- a/serde_derive/tests/compile-fail/duplicate-attribute/rename-and-ser.rs
+++ b/serde_derive/tests/compile-fail/duplicate-attribute/rename-and-ser.rs
@@ -1,5 +1,3 @@
-#![feature(proc_macro)]
-
 #[macro_use]
 extern crate serde_derive;
 
diff --git a/serde_derive/tests/compile-fail/duplicate-attribute/rename-rename-de.rs b/serde_derive/tests/compile-fail/duplicate-attribute/rename-rename-de.rs
index 04718a0e..bd7be3ad 100644
--- a/serde_derive/tests/compile-fail/duplicate-attribute/rename-rename-de.rs
+++ b/serde_derive/tests/compile-fail/duplicate-attribute/rename-rename-de.rs
@@ -1,5 +1,3 @@
-#![feature(proc_macro)]
-
 #[macro_use]
 extern crate serde_derive;
 
diff --git a/serde_derive/tests/compile-fail/duplicate-attribute/rename-ser-rename-ser.rs b/serde_derive/tests/compile-fail/duplicate-attribute/rename-ser-rename-ser.rs
index 420182c4..6ca7c8f8 100644
--- a/serde_derive/tests/compile-fail/duplicate-attribute/rename-ser-rename-ser.rs
+++ b/serde_derive/tests/compile-fail/duplicate-attribute/rename-ser-rename-ser.rs
@@ -1,5 +1,3 @@
-#![feature(proc_macro)]
-
 #[macro_use]
 extern crate serde_derive;
 
diff --git a/serde_derive/tests/compile-fail/duplicate-attribute/rename-ser-rename.rs b/serde_derive/tests/compile-fail/duplicate-attribute/rename-ser-rename.rs
index 52715b9d..afe343b1 100644
--- a/serde_derive/tests/compile-fail/duplicate-attribute/rename-ser-rename.rs
+++ b/serde_derive/tests/compile-fail/duplicate-attribute/rename-ser-rename.rs
@@ -1,5 +1,3 @@
-#![feature(proc_macro)]
-
 #[macro_use]
 extern crate serde_derive;
 
diff --git a/serde_derive/tests/compile-fail/duplicate-attribute/rename-ser-ser.rs b/serde_derive/tests/compile-fail/duplicate-attribute/rename-ser-ser.rs
index 31264c6b..8d50c256 100644
--- a/serde_derive/tests/compile-fail/duplicate-attribute/rename-ser-ser.rs
+++ b/serde_derive/tests/compile-fail/duplicate-attribute/rename-ser-ser.rs
@@ -1,5 +1,3 @@
-#![feature(proc_macro)]
-
 #[macro_use]
 extern crate serde_derive;
 
diff --git a/serde_derive/tests/compile-fail/duplicate-attribute/two-rename-ser.rs b/serde_derive/tests/compile-fail/duplicate-attribute/two-rename-ser.rs
index d6054529..94b67cff 100644
--- a/serde_derive/tests/compile-fail/duplicate-attribute/two-rename-ser.rs
+++ b/serde_derive/tests/compile-fail/duplicate-attribute/two-rename-ser.rs
@@ -1,5 +1,3 @@
-#![feature(proc_macro)]
-
 #[macro_use]
 extern crate serde_derive;
 
diff --git a/serde_derive/tests/compile-fail/str_ref_deser.rs b/serde_derive/tests/compile-fail/str_ref_deser.rs
index 58ae577c..08c9b1f9 100644
--- a/serde_derive/tests/compile-fail/str_ref_deser.rs
+++ b/serde_derive/tests/compile-fail/str_ref_deser.rs
@@ -1,5 +1,3 @@
-#![feature(proc_macro)]
-
 #[macro_use]
 extern crate serde_derive;
 
diff --git a/serde_derive/tests/compile-fail/unknown-attribute/container.rs b/serde_derive/tests/compile-fail/unknown-attribute/container.rs
index 575cc10c..59abfe1d 100644
--- a/serde_derive/tests/compile-fail/unknown-attribute/container.rs
+++ b/serde_derive/tests/compile-fail/unknown-attribute/container.rs
@@ -1,5 +1,3 @@
-#![feature(proc_macro)]
-
 #[macro_use]
 extern crate serde_derive;
 
diff --git a/serde_derive/tests/compile-fail/unknown-attribute/field.rs b/serde_derive/tests/compile-fail/unknown-attribute/field.rs
index 457ce520..66142ce3 100644
--- a/serde_derive/tests/compile-fail/unknown-attribute/field.rs
+++ b/serde_derive/tests/compile-fail/unknown-attribute/field.rs
@@ -1,5 +1,3 @@
-#![feature(proc_macro)]
-
 #[macro_use]
 extern crate serde_derive;
 
diff --git a/serde_derive/tests/compile-fail/unknown-attribute/variant.rs b/serde_derive/tests/compile-fail/unknown-attribute/variant.rs
index af5c323a..9b95ec0a 100644
--- a/serde_derive/tests/compile-fail/unknown-attribute/variant.rs
+++ b/serde_derive/tests/compile-fail/unknown-attribute/variant.rs
@@ -1,5 +1,3 @@
-#![feature(proc_macro)]
-
 #[macro_use]
 extern crate serde_derive;
 
diff --git a/serde_derive/tests/run-pass/identity-op.rs b/serde_derive/tests/run-pass/identity-op.rs
index 0def143e..e1638025 100644
--- a/serde_derive/tests/run-pass/identity-op.rs
+++ b/serde_derive/tests/run-pass/identity-op.rs
@@ -1,4 +1,3 @@
-#![feature(proc_macro)]
 #![deny(identity_op)]
 
 #[macro_use]
diff --git a/serde_derive/tests/test.rs b/serde_derive/tests/test.rs
index fde3cfa2..b1969a8f 100644
--- a/serde_derive/tests/test.rs
+++ b/serde_derive/tests/test.rs
@@ -1,4 +1,4 @@
-#![feature(test, proc_macro)]
+#![feature(test)]
 
 #[macro_use]
 extern crate serde_derive;