diff --git a/Cargo.toml b/Cargo.toml
index f89f8cc..7498b44 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,6 +15,3 @@ serde = { version = "1", features = ["derive"], optional = true }
 
 [dev-dependencies]
 serde_test = "1"
-
-[features]
-with-serde = ["serde"] # Compatibility shim for 1.1.0. Use `serde` instead.
diff --git a/src/with_serde.rs b/src/ipnet_serde.rs
similarity index 100%
rename from src/with_serde.rs
rename to src/ipnet_serde.rs
diff --git a/src/lib.rs b/src/lib.rs
index 58d3dfd..a72fd40 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -87,4 +87,4 @@ mod ipext;
 mod ipnet;
 mod parser;
 #[cfg(feature = "serde")]
-mod with_serde;
+mod ipnet_serde;