diff --git a/src/interpreter.jl b/src/interpreter.jl
index 84e97852..335b462b 100644
--- a/src/interpreter.jl
+++ b/src/interpreter.jl
@@ -65,12 +65,18 @@ end
 #=CC.=#get_inference_world(interp::CthulhuInterpreter) = get_inference_world(interp.native)
 CC.get_inference_cache(interp::CthulhuInterpreter) = get_inference_cache(interp.native)
 
-# No need to do any locking since we're not putting our results into the runtime cache
-CC.lock_mi_inference(interp::CthulhuInterpreter, mi::MethodInstance) = nothing
-CC.unlock_mi_inference(interp::CthulhuInterpreter, mi::MethodInstance) = nothing
+CC.may_optimize(interp::CthulhuInterpreter) = true
+CC.may_compress(interp::CthulhuInterpreter) = false
+CC.may_discard_trees(interp::CthulhuInterpreter) = false
+CC.verbose_stmt_info(interp::CthulhuInterpreter) = true
+
 CC.method_table(interp::CthulhuInterpreter) = method_table(interp.native)
 
-if isdefined(CC, :cache_owner)
+@static if VERSION ≥ v"1.11.0-DEV.1552"
+# Since the cache for `CthulhuInterpreter` is volatile and does not involve with the
+# internal code cache, technically, there's no requirement to supply `cache_owner` as an
+# identifier for the internal code cache. However, the definition of `cache_owner` is
+# necessary for utilizing the default `CodeInstance` constructor, define the overload here.
 struct CthulhuCacheToken
     token
 end
@@ -80,17 +86,11 @@ end
 struct CthulhuCache
     cache::OptimizationDict
 end
-
 CC.code_cache(interp::CthulhuInterpreter) = WorldView(CthulhuCache(interp.opt), WorldRange(get_inference_world(interp)))
 CC.get(wvc::WorldView{CthulhuCache}, mi::MethodInstance, default) = get(wvc.cache.cache, mi, default)
 CC.haskey(wvc::WorldView{CthulhuCache}, mi::MethodInstance) = haskey(wvc.cache.cache, mi)
 CC.setindex!(wvc::WorldView{CthulhuCache}, ci::CodeInstance, mi::MethodInstance) = setindex!(wvc.cache.cache, ci, mi)
 
-CC.may_optimize(interp::CthulhuInterpreter) = true
-CC.may_compress(interp::CthulhuInterpreter) = false
-CC.may_discard_trees(interp::CthulhuInterpreter) = false
-CC.verbose_stmt_info(interp::CthulhuInterpreter) = true
-
 function CC.add_remark!(interp::CthulhuInterpreter, sv::InferenceState, msg)
     key = CC.any(sv.result.overridden_by_const) ? sv.result : sv.linfo
     push!(get!(PC2Remarks, interp.remarks, key), sv.currpc=>msg)
diff --git a/test/setup.jl b/test/setup.jl
index 8e0dfd87..ec54365b 100644
--- a/test/setup.jl
+++ b/test/setup.jl
@@ -3,13 +3,16 @@ if isdefined(parentmodule(@__MODULE__), :VSCodeServer)
     using ..VSCodeServer
 end
 
-function cthulhu_info(@nospecialize(f), @nospecialize(TT=()); optimize=true)
-    (interp, mi) = Cthulhu.mkinterp(Core.Compiler.NativeInterpreter(), f, TT)
-    (; src, rt, exct, infos, slottypes, effects) = Cthulhu.lookup(interp, mi, optimize; allow_no_src=true)
+function cthulhu_info(@nospecialize(f), @nospecialize(tt=());
+                      optimize=true, interp=Core.Compiler.NativeInterpreter())
+    (interp, mi) = Cthulhu.mkinterp(f, tt; interp)
+    (; src, rt, exct, infos, slottypes, effects) =
+        Cthulhu.lookup(interp, mi, optimize; allow_no_src=true)
     if src !== nothing
-        src = Cthulhu.preprocess_ci!(src, mi, optimize, Cthulhu.CthulhuConfig(dead_code_elimination=true))
+        config = Cthulhu.CthulhuConfig(; dead_code_elimination=true)
+        src = Cthulhu.preprocess_ci!(src, mi, optimize, config)
     end
-    (; interp, src, infos, mi, rt, exct, slottypes, effects)
+    return (; interp, src, infos, mi, rt, exct, slottypes, effects)
 end
 
 function find_callsites_by_ftt(@nospecialize(f), @nospecialize(TT=Tuple{}); optimize=true)
diff --git a/test/test_AbstractInterpreter.jl b/test/test_AbstractInterpreter.jl
index aa62c7f4..ece9669c 100644
--- a/test/test_AbstractInterpreter.jl
+++ b/test/test_AbstractInterpreter.jl
@@ -7,7 +7,7 @@ end
 
 const CC = Core.Compiler
 
-if isdefined(CC, :cache_owner)
+@static if VERSION ≥ v"1.11.0-DEV.1552"
 macro newinterp(InterpName)
     InterpCacheName = QuoteNode(Symbol(string(InterpName, "Cache")))
     InterpName = esc(InterpName)
@@ -77,7 +77,7 @@ macro newinterp(InterpName)
         $CC.setindex!(wvc::$CC.WorldView{$InterpCacheName}, ci::$C.CodeInstance, mi::$C.MethodInstance) = setindex!(wvc.cache.dict, ci, mi)
     end
 end
-end # isdefined(CC, :cache_owner)
+end # if VERSION ≥ v"1.11.0-DEV.1552"
 
 @doc """
 @newinterp NewInterpreter
diff --git a/test/test_Cthulhu.jl b/test/test_Cthulhu.jl
index 2f902252..8d6b4fcd 100644
--- a/test/test_Cthulhu.jl
+++ b/test/test_Cthulhu.jl
@@ -268,12 +268,12 @@ end
                 end
                 t[1]
             end
-            @test length(callsites) == 1                                        # getindex(::Union{Vector{Any}, Const(tuple(1,nothing))}, ::Const(1))
+            @test length(callsites) == 1 # getindex(::Union{Vector{Any}, Const(tuple(1,nothing))}, ::Const(1))
             callinfo = callsites[1].info
             @test isa(callinfo, Cthulhu.MultiCallInfo)
             callinfos = callinfo.callinfos
             @test length(callinfos) == 2
-            @test count(ci->isa(ci, Cthulhu.MICallInfo), callinfos) == 1        # getindex(::Vector{Any}, ::Const(1))
+            @test count(ci->isa(ci, Cthulhu.MICallInfo), callinfos) == 1 # getindex(::Vector{Any}, ::Const(1))
             @test count(ci->isa(ci, Cthulhu.ConstPropCallInfo) || isa(ci, Cthulhu.SemiConcreteCallInfo), callinfos) == 1 # getindex(::Const(tuple(1,nothing)), ::Const(1))
         end
 
@@ -1015,12 +1015,10 @@ end
 let (interp, mi) = Cthulhu.mkinterp((Int,)) do var::Int
         countvars50037(1, var)
     end
-    key = nothing
-    for (mi, codeinst) in interp.opt
-        if mi.def.name === :countvars50037
-            key = mi
-            break
-        end
+    @static if VERSION ≥ v"1.10"
+    key = only(Base.specializations(only(methods(countvars50037))))
+    else
+    key = only(methods(countvars50037)).specializations[1]
     end
     codeinst = interp.opt[key]
     inferred = @atomic :monotonic codeinst.inferred