diff --git a/lld/ELF/Thunks.h b/lld/ELF/Thunks.h
index 21e99a0a8e287..5558da1a2c797 100644
--- a/lld/ELF/Thunks.h
+++ b/lld/ELF/Thunks.h
@@ -9,6 +9,7 @@
 #ifndef LLD_ELF_THUNKS_H
 #define LLD_ELF_THUNKS_H
 
+#include "llvm/ADT/SmallVector.h"
 #include "Relocations.h"
 
 namespace lld {
diff --git a/lld/MachO/OutputSegment.h b/lld/MachO/OutputSegment.h
index e5d87ba0a4e07..10cca2a1caad3 100644
--- a/lld/MachO/OutputSegment.h
+++ b/lld/MachO/OutputSegment.h
@@ -13,6 +13,7 @@
 #include "lld/Common/LLVM.h"
 
 #include <limits>
+#include <vector>
 
 namespace lld {
 namespace macho {
diff --git a/lld/include/lld/Common/Timer.h b/lld/include/lld/Common/Timer.h
index 95e811a2f9f03..b37388cd38c43 100644
--- a/lld/include/lld/Common/Timer.h
+++ b/lld/include/lld/Common/Timer.h
@@ -16,6 +16,7 @@
 #include <chrono>
 #include <map>
 #include <memory>
+#include <vector>
 
 namespace lld {