diff --git a/src/doc/unstable-book/src/language-features/repr128.md b/src/doc/unstable-book/src/language-features/repr128.md
index 0858988952c..146f50ee67b 100644
--- a/src/doc/unstable-book/src/language-features/repr128.md
+++ b/src/doc/unstable-book/src/language-features/repr128.md
@@ -1,8 +1,8 @@
 # `repr128`
 
-The tracking issue for this feature is: [#35118]
+The tracking issue for this feature is: [#56071]
 
-[#35118]: https://github.com/rust-lang/rust/issues/35118
+[#56071]: https://github.com/rust-lang/rust/issues/56071
 
 ------------------------
 
diff --git a/src/librustc_feature/active.rs b/src/librustc_feature/active.rs
index 0d1d1f82544..4c8c47a5671 100644
--- a/src/librustc_feature/active.rs
+++ b/src/librustc_feature/active.rs
@@ -333,7 +333,7 @@ declare_features! (
     (active, abi_ptx, "1.15.0", Some(38788), None),
 
     /// Allows the `#[repr(i128)]` attribute for enums.
-    (active, repr128, "1.16.0", Some(35118), None),
+    (active, repr128, "1.16.0", Some(56071), None),
 
     /// Allows `#[link(kind="static-nobundle"...)]`.
     (active, static_nobundle, "1.16.0", Some(37403), None),
diff --git a/src/test/ui/error-codes/E0658.stderr b/src/test/ui/error-codes/E0658.stderr
index 071dbccd80b..1cb81c8d778 100644
--- a/src/test/ui/error-codes/E0658.stderr
+++ b/src/test/ui/error-codes/E0658.stderr
@@ -6,7 +6,7 @@ LL | |     Bar(u64),
 LL | | }
    | |_^
    |
-   = note: for more information, see https://github.com/rust-lang/rust/issues/35118
+   = note: for more information, see https://github.com/rust-lang/rust/issues/56071
    = help: add `#![feature(repr128)]` to the crate attributes to enable
 
 error: aborting due to previous error
diff --git a/src/test/ui/feature-gates/feature-gate-repr128.stderr b/src/test/ui/feature-gates/feature-gate-repr128.stderr
index 2139a5da600..e108d74e9c6 100644
--- a/src/test/ui/feature-gates/feature-gate-repr128.stderr
+++ b/src/test/ui/feature-gates/feature-gate-repr128.stderr
@@ -6,7 +6,7 @@ LL | |     A(u64)
 LL | | }
    | |_^
    |
-   = note: for more information, see https://github.com/rust-lang/rust/issues/35118
+   = note: for more information, see https://github.com/rust-lang/rust/issues/56071
    = help: add `#![feature(repr128)]` to the crate attributes to enable
 
 error: aborting due to previous error