diff --git a/include/llvm/IR/ValueMap.h b/include/llvm/IR/ValueMap.h
index 91d09f1cda4..9999113e099 100644
--- a/include/llvm/IR/ValueMap.h
+++ b/include/llvm/IR/ValueMap.h
@@ -33,6 +33,7 @@
 #include "llvm/Support/UniqueLock.h"
 #include "llvm/Support/type_traits.h"
 #include <iterator>
+#include <memory>
 
 namespace llvm {