diff --git a/src/internals.jl b/src/internals.jl
index 6b5a43d..242385d 100644
--- a/src/internals.jl
+++ b/src/internals.jl
@@ -2,18 +2,14 @@ module Internals
 
 import StableTasks: @spawn, @spawnat, @fetch, @fetchfrom, StableTask, AtomicRef
 
-if (
-    (@isdefined Core) &&
-    (Core isa Module) &&
-    isdefined(Core, :Compiler) &&
-    (Core.Compiler isa Module) &&
-    isdefined(Core.Compiler, :return_type) &&
-    applicable(Core.Compiler.return_type, identity, Tuple{})
+const infer_return_type = if (
+    isdefined(Base, :promote_op) &&
+    applicable(Base.promote_op, rand)
 )
-    infer_return_type(@nospecialize f::Any) = Core.Compiler.return_type(f, Tuple{})
+    Base.promote_op
 else
     # safe conservative fallback to `Any`, which is subtyped by each type
-    infer_return_type(@nospecialize f::Any) = Any
+    Returns(Any)
 end
 
 Base.getindex(r::AtomicRef) = @atomic r.x