diff --git a/nbench/scenarios.nim b/nbench/scenarios.nim
index 6d2edce24..16839c285 100644
--- a/nbench/scenarios.nim
+++ b/nbench/scenarios.nim
@@ -145,6 +145,7 @@ proc parseSSZ(path: string, T: typedesc): T =
 
 proc runFullTransition*(dir, preState, blocksPrefix: string, blocksQty: int, skipBLS: bool) =
   let prePath = dir / preState & ".ssz"
+  var cache = StateCache()
 
   echo "Running: ", prePath
   let state = (ref HashedBeaconState)(
@@ -160,7 +161,7 @@ proc runFullTransition*(dir, preState, blocksPrefix: string, blocksQty: int, ski
     let flags = if skipBLS: {skipBlsValidation}
                 else: {}
     let success = state_transition(
-      defaultRuntimePreset, state[], signedBlock, flags, noRollback)
+      defaultRuntimePreset, state[], signedBlock, cache, flags, noRollback)
     echo "State transition status: ", if success: "SUCCESS ✓" else: "FAILURE ⚠️"
 
 proc runProcessSlots*(dir, preState: string, numSlots: uint64) =
diff --git a/ncli/ncli.nim b/ncli/ncli.nim
index 9b6b5fb66..05cd2c35b 100644
--- a/ncli/ncli.nim
+++ b/ncli/ncli.nim
@@ -83,8 +83,9 @@ proc doTransition(conf: NcliConf) =
 
   stateY.root = hash_tree_root(stateY.data)
 
+  var cache = StateCache()
   if not state_transition(getRuntimePresetForNetwork(conf.eth2Network),
-                          stateY[], blckX, flags, noRollback):
+                          stateY[], blckX, cache, flags, noRollback):
     error "State transition failed"
     quit 1
   else:
diff --git a/ncli/ncli_db.nim b/ncli/ncli_db.nim
index 61900870d..febbed1f8 100644
--- a/ncli/ncli_db.nim
+++ b/ncli/ncli_db.nim
@@ -127,7 +127,8 @@ proc cmdBench(conf: DbConf, runtimePreset: RuntimePreset) =
       isEpoch = state[].data.get_current_epoch() !=
         b.message.slot.compute_epoch_at_slot
     withTimer(timers[if isEpoch: tApplyEpochBlock else: tApplyBlock]):
-      if not state_transition(runtimePreset, state[], b, {}, noRollback):
+      var cache = StateCache()
+      if not state_transition(runtimePreset, state[], b, cache, {}, noRollback):
         dump("./", b)
         echo "State transition failed (!)"
         quit 1
diff --git a/nfuzz/libnfuzz.nim b/nfuzz/libnfuzz.nim
index e98f0b5d9..1970a828e 100644
--- a/nfuzz/libnfuzz.nim
+++ b/nfuzz/libnfuzz.nim
@@ -112,9 +112,12 @@ proc nfuzz_block(input: openArray[byte], xoutput: ptr byte,
   proc state_transition(
       preset: RuntimePreset, data: auto, blck: auto, flags: auto, rollback: RollbackHashedProc):
       auto =
-    var hashedState =
-      HashedBeaconState(data: data.state, root: hash_tree_root(data.state))
-    result = state_transition(preset, hashedState, blck, flags, rollback)
+    var
+      hashedState =
+        HashedBeaconState(data: data.state, root: hash_tree_root(data.state))
+      cache = StateCache()
+    result =
+      state_transition(preset, hashedState, blck, cache, flags, rollback)
     data.state = hashedState.data
 
   decodeAndProcess(BlockInput):