diff --git a/Cargo.toml b/Cargo.toml
index c254d4607..0e4c79998 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,7 +16,7 @@ exclude = ["rfcs/**/*", "/.travis.yml", "/appveyor.yml"]
 build = "build.rs"
 
 [package.metadata.docs.rs]
-features = ["std", "serde"]
+features = ["std", "serde", "kv_unstable"]
 
 [[test]]
 name = "filters"