diff --git a/deps/macaw b/deps/macaw
index ad51ae3c54..a43151963d 160000
--- a/deps/macaw
+++ b/deps/macaw
@@ -1 +1 @@
-Subproject commit ad51ae3c54be97f4f7d15e8eaed9344341ce88e4
+Subproject commit a43151963da70e4d4c3d69f9605e82e44ff30731
diff --git a/src/SAWScript/X86.hs b/src/SAWScript/X86.hs
index 578d2cbf35..ce90faef4b 100644
--- a/src/SAWScript/X86.hs
+++ b/src/SAWScript/X86.hs
@@ -185,7 +185,7 @@ data Fun = Fun { funName :: ByteString, funSpec :: FunSpec }
 
 --------------------------------------------------------------------------------
 
-type CallHandler = Sym -> Macaw.LookupFunctionHandle Sym X86_64
+type CallHandler = Sym -> Macaw.LookupFunctionHandle (MacawSimulatorState Sym) Sym X86_64
 
 -- | Run a top-level proof.
 -- Should be used when making a standalone proof script.
diff --git a/src/SAWScript/X86Spec.hs b/src/SAWScript/X86Spec.hs
index f160e6bc00..d11e3ef2ae 100644
--- a/src/SAWScript/X86Spec.hs
+++ b/src/SAWScript/X86Spec.hs
@@ -123,7 +123,10 @@ import Lang.Crucible.Types
 import Verifier.SAW.SharedTerm
   (Term,scApplyAll,scVector,scBitvector,scAt,scNat)
 import Data.Macaw.Memory(RegionIndex)
-import Data.Macaw.Symbolic(GlobalMap(..), ToCrucibleType, LookupFunctionHandle(..), MacawCrucibleRegTypes)
+import Data.Macaw.Symbolic
+  ( GlobalMap(..), ToCrucibleType, LookupFunctionHandle(..)
+  , MacawCrucibleRegTypes, MacawSimulatorState
+  )
 import Data.Macaw.Symbolic.Backend ( crucArchRegTypes )
 import Data.Macaw.X86.X86Reg
 import Data.Macaw.X86.Symbolic
@@ -1203,7 +1206,7 @@ _debugDumpGoals opts =
   sh (ProofGoal _hyps g) = print (view labeledPredMsg g)
 
 
-type Overrides = Map (Natural,Integer) (Sym -> LookupFunctionHandle Sym X86_64)
+type Overrides = Map (Natural,Integer) (Sym -> LookupFunctionHandle (MacawSimulatorState Sym) Sym X86_64)
 
 -- | Use a specification to verify a function.
 -- Returns the initial state for the function, and a post-condition.