diff --git a/yoga/YGNode.h b/yoga/YGNode.h
index e43dc9d8..bbd1b703 100644
--- a/yoga/YGNode.h
+++ b/yoga/YGNode.h
@@ -5,6 +5,7 @@
  * file in the root directory of this source tree.
  */
 #pragma once
+#include <cstdint>
 #include <stdio.h>
 #include "CompactValue.h"
 #include "YGConfig.h"
@@ -27,6 +28,7 @@ private:
   bool measureUsesContext_ : 1;
   bool baselineUsesContext_ : 1;
   bool printUsesContext_ : 1;
+  uint8_t reserved_ = 0;
   union {
     YGMeasureFunc noContext;
     MeasureWithContextFn withContext;
@@ -91,6 +93,9 @@ public:
   // Getters
   void* getContext() const { return context_; }
 
+  uint8_t& reserved() { return reserved_; }
+  uint8_t reserved() const { return reserved_; }
+
   void print(void*);
 
   bool getHasNewLayout() const { return hasNewLayout_; }