diff --git a/llvm/include/llvm/ExecutionEngine/Orc/Shared/SimpleRemoteEPCUtils.h b/llvm/include/llvm/ExecutionEngine/Orc/Shared/SimpleRemoteEPCUtils.h
index 03a6710fccda8..5cd178cdeb867 100644
--- a/llvm/include/llvm/ExecutionEngine/Orc/Shared/SimpleRemoteEPCUtils.h
+++ b/llvm/include/llvm/ExecutionEngine/Orc/Shared/SimpleRemoteEPCUtils.h
@@ -23,6 +23,7 @@
 #include "llvm/Support/Error.h"
 
 #include <atomic>
+#include <condition_variable>
 #include <mutex>
 #include <string>
 #include <thread>