diff --git a/src/librustc_codegen_llvm/lib.rs b/src/librustc_codegen_llvm/lib.rs
index 5b8c7461bcb60..258391ba8360f 100644
--- a/src/librustc_codegen_llvm/lib.rs
+++ b/src/librustc_codegen_llvm/lib.rs
@@ -123,9 +123,9 @@ impl ExtraBackendMethods for LlvmCodegenBackend {
     ) -> EncodedMetadata {
         base::write_metadata(tcx, metadata)
     }
-    fn codegen_allocator(
+    fn codegen_allocator<'b, 'gcx>(
         &self,
-        tcx: TyCtxt<'_, '_, '_>,
+        tcx: TyCtxt<'b, 'gcx, 'gcx>,
         mods: &mut ModuleLlvm,
         kind: AllocatorKind
     ) {
diff --git a/src/librustc_codegen_ssa/traits/backend.rs b/src/librustc_codegen_ssa/traits/backend.rs
index 00eae9098e74f..a9e0eadb198a8 100644
--- a/src/librustc_codegen_ssa/traits/backend.rs
+++ b/src/librustc_codegen_ssa/traits/backend.rs
@@ -38,9 +38,9 @@ pub trait ExtraBackendMethods: CodegenBackend + WriteBackendMethods + Sized + Se
         tcx: TyCtxt<'b, 'gcx, 'gcx>,
         metadata: &mut Self::Module,
     ) -> EncodedMetadata;
-    fn codegen_allocator(
+    fn codegen_allocator<'b, 'gcx>(
         &self,
-        tcx: TyCtxt<'_, '_, '_>,
+        tcx: TyCtxt<'b, 'gcx, 'gcx>,
         mods: &mut Self::Module,
         kind: AllocatorKind
     );