diff --git a/Cargo.toml b/Cargo.toml
index f915265..1ee8133 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,5 +10,5 @@ license = "Apache-2.0"
 edition = "2018"
 
 [dependencies]
-nix = "0.23.1"
+nix = { version = "0.29", features = ["mount", "sched"] }
 thiserror = "1.0.30"
diff --git a/src/netns.rs b/src/netns.rs
index 96e7672..85409f2 100644
--- a/src/netns.rs
+++ b/src/netns.rs
@@ -219,7 +219,7 @@ impl<E: Env> NetNs<E> {
     ///
     /// Requires elevated privileges.
     pub fn enter(&self) -> Result<()> {
-        setns(self.file.as_raw_fd(), CloneFlags::CLONE_NEWNET).map_err(Error::SetnsError)
+        setns(&self.file, CloneFlags::CLONE_NEWNET).map_err(Error::SetnsError)
     }
 
     /// Returns the NetNs with the specified name and Env.