diff --git a/garde/Cargo.toml b/garde/Cargo.toml
index 1ca226d..40de208 100644
--- a/garde/Cargo.toml
+++ b/garde/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "garde"
-version = "0.16.0"
+version = "0.16.1"
 edition = "2021"
 repository = "https://github.com/jprochazk/garde"
 license = "MIT OR Apache-2.0"
diff --git a/garde/src/error.rs b/garde/src/error.rs
index 1c8747e..7ea037e 100644
--- a/garde/src/error.rs
+++ b/garde/src/error.rs
@@ -97,7 +97,10 @@ pub enum Kind {
     Index,
 }
 
-#[doc(hidden)]
+/// Represents a path component without a key. This is useful when the container
+/// only ever holds a single key, which is the case for any 1-tuple struct.
+///
+/// For an example usage, see the implementation of [Inner][`crate::rules::inner::Inner`] for `Option`.
 #[derive(Default)]
 pub struct NoKey(());
 
diff --git a/garde_derive/Cargo.toml b/garde_derive/Cargo.toml
index 6842bf9..aa9cf2f 100644
--- a/garde_derive/Cargo.toml
+++ b/garde_derive/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "garde_derive"
-version = "0.16.0"
+version = "0.16.1"
 edition = "2021"
 repository = "https://github.com/jprochazk/garde"
 license = "MIT OR Apache-2.0"
diff --git a/integrations/axum_garde/Cargo.toml b/integrations/axum_garde/Cargo.toml
index 09dd505..6b51c8b 100644
--- a/integrations/axum_garde/Cargo.toml
+++ b/integrations/axum_garde/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "axum_garde"
-version = "0.16.0"
+version = "0.16.1"
 edition = "2021"
 repository = "https://github.com/jprochazk/garde"
 license = "MIT OR Apache-2.0"