diff --git a/src/engine_api.rs b/src/engine_api.rs
index 131bcc6e..8703d3d0 100644
--- a/src/engine_api.rs
+++ b/src/engine_api.rs
@@ -859,12 +859,10 @@ impl Engine {
         self
     }
     /// Register a shared [`Module`] into the global namespace of [`Engine`].
-    ///
-    /// # Deprecated
-    ///
+    /// This function is deprecated and will be removed in the future.
     /// Use [`register_global_module`][Engine::register_global_module] instead.
     #[inline(always)]
-    #[deprecated = "use `register_global_module` instead"]
+    #[deprecated(since = "0.19.9", note = "use `register_global_module` instead")]
     pub fn load_package(&mut self, module: impl Into<Shared<Module>>) -> &mut Self {
         self.register_global_module(module.into())
     }
@@ -947,13 +945,11 @@ impl Engine {
     }
 
     /// Register a shared [`Module`] as a static module namespace with the [`Engine`].
-    ///
-    /// # Deprecated
-    ///
+    /// This function is deprecated and will be removed in the future.
     /// Use [`register_static_module`][Engine::register_static_module] instead.
     #[cfg(not(feature = "no_module"))]
     #[inline(always)]
-    #[deprecated = "use `register_static_module` instead"]
+    #[deprecated(since = "0.19.9", note = "use `register_static_module` instead")]
     pub fn register_module(
         &mut self,
         name: impl AsRef<str> + Into<ImmutableString>,
diff --git a/src/lib.rs b/src/lib.rs
index 3a880f4d..87996279 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -135,6 +135,22 @@ pub use syntax::Expression;
 pub use token::Position;
 pub use utils::ImmutableString;
 
+/// A trait to enable registering Rust functions.
+/// This trait is  no longer needed and will be removed in the future.
+#[deprecated(
+    since = "0.19.15",
+    note = "this trait is no longer needed and will be removed in the future"
+)]
+pub trait RegisterFn {}
+
+/// A trait to enable registering Rust functions.
+/// This trait is  no longer needed and will be removed in the future.
+#[deprecated(
+    since = "0.19.15",
+    note = "this trait is no longer needed and will be removed in the future"
+)]
+pub trait RegisterResultFn {}
+
 /// Alias to [`Rc`][std::rc::Rc] or [`Arc`][std::sync::Arc] depending on the `sync` feature flag.
 pub use fn_native::Shared;
 
@@ -208,9 +224,9 @@ pub use engine::Limits;
 pub use module::NamespaceRef;
 
 /// Alias to [`smallvec::SmallVec<[T; 4]>`](https://crates.io/crates/smallvec), which is a
-/// specialized [`Vec`] backed by a small, inline, fixed-size array when there are <= 4 items stored.
+/// specialized [`Vec`] backed by a small, inline, fixed-size array when there are ≤ 4 items stored.
 ///
-/// # Background
+/// # History
 ///
 /// And Saint Attila raised the `SmallVec` up on high, saying, "O Lord, bless this Thy `SmallVec`
 /// that, with it, Thou mayest blow Thine allocation costs to tiny bits in Thy mercy."
@@ -235,17 +251,17 @@ pub use module::NamespaceRef;
 /// in that matter) contain fewer than 5 arguments, the exception being closures that capture a
 /// large number of external variables.
 ///
-/// In addition, most scripts blocks either contain many statements, or just a few lines;
+/// In addition, most script blocks either contain many statements, or just a few lines;
 /// most scripts load fewer than 5 external modules; most module paths contain fewer than 5 levels
 /// (e.g. `std::collections::map::HashMap` is 4 levels, and that's already quite long).
 #[cfg(not(feature = "internals"))]
 type StaticVec<T> = smallvec::SmallVec<[T; 4]>;
 
 /// _(INTERNALS)_ Alias to [`smallvec`](https://crates.io/crates/smallvec), which is a specialized
-/// [`Vec`] backed by a small, inline, fixed-size array when there are <= 4 items stored.
+/// [`Vec`] backed by a small, inline, fixed-size array when there are ≤ 4 items stored.
 /// Exported under the `internals` feature only.
 ///
-/// # Background
+/// # History
 ///
 /// And Saint Attila raised the `SmallVec` up on high, saying, "O Lord, bless this Thy `SmallVec`
 /// that, with it, Thou mayest blow Thine allocation costs to tiny bits in Thy mercy."
@@ -270,7 +286,7 @@ type StaticVec<T> = smallvec::SmallVec<[T; 4]>;
 /// in that matter) contain fewer than 5 arguments, the exception being closures that capture a
 /// large number of external variables.
 ///
-/// In addition, most scripts blocks either contain many statements, or just a few lines;
+/// In addition, most script blocks either contain many statements, or just a few lines;
 /// most scripts load fewer than 5 external modules; most module paths contain fewer than 5 levels
 /// (e.g. `std::collections::map::HashMap` is 4 levels, and that's already quite long).
 #[cfg(feature = "internals")]
diff --git a/src/packages/mod.rs b/src/packages/mod.rs
index 7524ec3d..145eabf0 100644
--- a/src/packages/mod.rs
+++ b/src/packages/mod.rs
@@ -40,11 +40,9 @@ pub trait Package {
     fn as_shared_module(&self) -> Shared<Module>;
 
     /// Retrieve the generic package library from this package.
-    ///
-    /// # Deprecated
-    ///
+    /// This method is deprecated and will be removed in the future.
     /// Use [`as_shared_module`][Package::as_shared_module] instead.
-    #[deprecated = "use `as_shared_module` instead"]
+    #[deprecated(since = "0.19.9", note = "use `as_shared_module` instead")]
     fn get(&self) -> Shared<Module> {
         self.as_shared_module()
     }