diff --git a/library/alloc/src/lib.rs b/library/alloc/src/lib.rs
index ffe6d6373875c6e28d07624d1152cf7480c04943..efe8f5a8bcf3ce86a9cb6ff44e275efb47bda6f5 100644
--- a/library/alloc/src/lib.rs
+++ b/library/alloc/src/lib.rs
@@ -120,6 +120,7 @@
 #![feature(const_waker)]
 #![feature(core_intrinsics)]
 #![feature(core_panic)]
+#![feature(deprecated_suggestion)]
 #![feature(dispatch_from_dyn)]
 #![feature(error_generic_member_access)]
 #![feature(error_in_core)]
diff --git a/library/alloc/src/slice.rs b/library/alloc/src/slice.rs
index 093dcbbe8bf775c3b437ee7329527ca7ed5d6da7..aa3b7b7e1914b44f6b5c42a1185a7e0886a37b4c 100644
--- a/library/alloc/src/slice.rs
+++ b/library/alloc/src/slice.rs
@@ -592,7 +592,7 @@ pub fn join<Separator>(&self, sep: Separator) -> <Self as Join<Separator>>::Outp
     /// ```
     #[rustc_allow_incoherent_impl]
     #[stable(feature = "rust1", since = "1.0.0")]
-    #[deprecated(since = "1.3.0", note = "renamed to join")]
+    #[deprecated(since = "1.3.0", note = "renamed to join", suggestion = "join")]
     pub fn connect<Separator>(&self, sep: Separator) -> <Self as Join<Separator>>::Output
     where
         Self: Join<Separator>,
diff --git a/library/core/src/mem/mod.rs b/library/core/src/mem/mod.rs
index 2fff3f0efd73af0cb8de854e267ed45bdf17219b..732fcce0f2930d465631a377d0b52207240ba593 100644
--- a/library/core/src/mem/mod.rs
+++ b/library/core/src/mem/mod.rs
@@ -413,7 +413,7 @@ pub const fn size_of_val<T: ?Sized>(val: &T) -> usize {
 #[inline]
 #[must_use]
 #[stable(feature = "rust1", since = "1.0.0")]
-#[deprecated(note = "use `align_of` instead", since = "1.2.0")]
+#[deprecated(note = "use `align_of` instead", since = "1.2.0", suggestion = "align_of")]
 pub fn min_align_of<T>() -> usize {
     intrinsics::min_align_of::<T>()
 }
@@ -436,7 +436,7 @@ pub fn min_align_of<T>() -> usize {
 #[inline]
 #[must_use]
 #[stable(feature = "rust1", since = "1.0.0")]
-#[deprecated(note = "use `align_of_val` instead", since = "1.2.0")]
+#[deprecated(note = "use `align_of_val` instead", since = "1.2.0", suggestion = "align_of_val")]
 pub fn min_align_of_val<T: ?Sized>(val: &T) -> usize {
     // SAFETY: val is a reference, so it's a valid raw pointer
     unsafe { intrinsics::min_align_of_val(val) }
diff --git a/library/core/src/str/mod.rs b/library/core/src/str/mod.rs
index e5f34952c7d40ab9c2f884d6cb4271e98218c9ef..23cebdb6c3b906f9ac40732dac761f6841b8b63d 100644
--- a/library/core/src/str/mod.rs
+++ b/library/core/src/str/mod.rs
@@ -997,7 +997,7 @@ pub fn lines(&self) -> Lines<'_> {
 
     /// An iterator over the lines of a string.
     #[stable(feature = "rust1", since = "1.0.0")]
-    #[deprecated(since = "1.4.0", note = "use lines() instead now")]
+    #[deprecated(since = "1.4.0", note = "use lines() instead now", suggestion = "lines")]
     #[inline]
     #[allow(deprecated)]
     pub fn lines_any(&self) -> LinesAny<'_> {
diff --git a/tests/ui/deprecation/issue-84637-deprecated-associated-function.fixed b/tests/ui/deprecation/issue-84637-deprecated-associated-function.fixed
index 85e882870946b43fa3f55c7582b6cb746d15f199..659b5465522298d6cb6c37721986c6bef31ddad3 100644
--- a/tests/ui/deprecation/issue-84637-deprecated-associated-function.fixed
+++ b/tests/ui/deprecation/issue-84637-deprecated-associated-function.fixed
@@ -6,4 +6,6 @@ fn main() {
     let _foo = str::trim_start("   aoeu"); //~ ERROR use of deprecated method `core::str::<impl str>::trim_left`: superseded by `trim_start` [deprecated]
 
     let _bar = "   aoeu".trim_start(); //~ ERROR use of deprecated method `core::str::<impl str>::trim_left`: superseded by `trim_start` [deprecated]
+
+    let _baz = ["a", "b"].join(" "); //~ ERROR use of deprecated method `std::slice::<impl [T]>::connect`: renamed to join [deprecated]
 }
diff --git a/tests/ui/deprecation/issue-84637-deprecated-associated-function.rs b/tests/ui/deprecation/issue-84637-deprecated-associated-function.rs
index 246de2f5e4bfe384c788ce3cedbb5641410b1672..cfc6c4450b4ab9f8f0eec7ba8b911774ff086d2b 100644
--- a/tests/ui/deprecation/issue-84637-deprecated-associated-function.rs
+++ b/tests/ui/deprecation/issue-84637-deprecated-associated-function.rs
@@ -6,4 +6,6 @@ fn main() {
     let _foo = str::trim_left("   aoeu"); //~ ERROR use of deprecated method `core::str::<impl str>::trim_left`: superseded by `trim_start` [deprecated]
 
     let _bar = "   aoeu".trim_left(); //~ ERROR use of deprecated method `core::str::<impl str>::trim_left`: superseded by `trim_start` [deprecated]
+
+    let _baz = ["a", "b"].connect(" "); //~ ERROR use of deprecated method `std::slice::<impl [T]>::connect`: renamed to join [deprecated]
 }
diff --git a/tests/ui/deprecation/issue-84637-deprecated-associated-function.stderr b/tests/ui/deprecation/issue-84637-deprecated-associated-function.stderr
index 3b518d1802bc8ff4838fa72a7b00c110a6c884a3..d1f5ea3602a8ffbbd494dabae8cb7442c827e868 100644
--- a/tests/ui/deprecation/issue-84637-deprecated-associated-function.stderr
+++ b/tests/ui/deprecation/issue-84637-deprecated-associated-function.stderr
@@ -25,5 +25,16 @@ help: replace the use of the deprecated method
 LL |     let _bar = "   aoeu".trim_start();
    |                          ~~~~~~~~~~
 
-error: aborting due to 2 previous errors
+error: use of deprecated method `std::slice::<impl [T]>::connect`: renamed to join
+  --> $DIR/issue-84637-deprecated-associated-function.rs:10:27
+   |
+LL |     let _baz = ["a", "b"].connect(" ");
+   |                           ^^^^^^^
+   |
+help: replace the use of the deprecated method
+   |
+LL |     let _baz = ["a", "b"].join(" ");
+   |                           ~~~~
+
+error: aborting due to 3 previous errors