diff --git a/actix-http/Cargo.toml b/actix-http/Cargo.toml
index e46d07e73..a12fed4b9 100644
--- a/actix-http/Cargo.toml
+++ b/actix-http/Cargo.toml
@@ -54,7 +54,6 @@ bitflags = "1.2"
 bytes = "1"
 bytestring = "1"
 derive_more = "0.99.5"
-dyn-clone = "1"
 encoding_rs = "0.8"
 futures-core = { version = "0.3.7", default-features = false, features = ["alloc"] }
 futures-util = { version = "0.3.7", default-features = false, features = ["alloc", "sink"] }
diff --git a/actix-http/src/extensions.rs b/actix-http/src/extensions.rs
index a3b9bb5b0..4802bf233 100644
--- a/actix-http/src/extensions.rs
+++ b/actix-http/src/extensions.rs
@@ -1,6 +1,6 @@
 use std::{
     any::{Any, TypeId},
-    fmt, mem,
+    fmt,
 };
 
 use ahash::AHashMap;
@@ -124,11 +124,6 @@ impl Extensions {
         self.map.extend(other.map);
     }
 
-    /// Sets (or overrides) items from `other` into this map.
-    pub(crate) fn drain_from(&mut self, other: &mut Self) {
-        self.map.extend(mem::take(&mut other.map));
-    }
-
     /// Sets (or overrides) items from cloneable extensions map into this map.
     pub(crate) fn clone_from(&mut self, other: &CloneableExtensions) {
         for (k, val) in &other.map {
@@ -147,13 +142,6 @@ fn downcast_owned<T: 'static>(boxed: Box<dyn Any>) -> Option<T> {
     boxed.downcast().ok().map(|boxed| *boxed)
 }
 
-// fn downcast_rc<T: 'static>(boxed: Rc<dyn Any>) -> Option<T> {
-//     boxed
-//         .downcast()
-//         .ok()
-//         .and_then(|boxed| Rc::try_unwrap(boxed).ok())
-// }
-
 #[doc(hidden)]
 pub trait CloneToAny {
     /// Clone `self` into a new `Box<Any>` object.