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-rw-r--r--src/libcore/internal_macros.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libcore/internal_macros.rs b/src/libcore/internal_macros.rs
index bd30a92b079..cb215a38e53 100644
--- a/src/libcore/internal_macros.rs
+++ b/src/libcore/internal_macros.rs
@@ -74,7 +74,7 @@ macro_rules! forward_ref_binop {
 macro_rules! forward_ref_op_assign {
     (impl $imp:ident, $method:ident for $t:ty, $u:ty) => {
         forward_ref_op_assign!(impl $imp, $method for $t, $u,
-                #[stable(feature = "op_assign_builtins_by_ref", since = "1.18.0")]);
+                #[stable(feature = "op_assign_builtins_by_ref", since = "1.22.0")]);
     };
     (impl $imp:ident, $method:ident for $t:ty, $u:ty, #[$attr:meta]) => {
         #[$attr]