diff --git a/include/llvm/IR/DiagnosticInfo.h b/include/llvm/IR/DiagnosticInfo.h
index c6a8854e077..439cf441a8a 100644
--- a/include/llvm/IR/DiagnosticInfo.h
+++ b/include/llvm/IR/DiagnosticInfo.h
@@ -20,6 +20,7 @@
 #include "llvm/IR/DebugLoc.h"
 #include "llvm/IR/Module.h"
 #include "llvm/Support/Casting.h"
+#include <utility>
 
 namespace llvm {