diff --git a/include/LLVMSPIRVLib.h b/include/LLVMSPIRVLib.h
index 48834d8be8..f1737040f7 100644
--- a/include/LLVMSPIRVLib.h
+++ b/include/LLVMSPIRVLib.h
@@ -43,8 +43,11 @@
 
 #include "LLVMSPIRVOpts.h"
 
+#include <cstdint>
 #include <iostream>
+#include <optional>
 #include <string>
+#include <vector>
 
 namespace llvm {
 // Pass initialization functions need to be declared before inclusion of
diff --git a/include/LLVMSPIRVOpts.h b/include/LLVMSPIRVOpts.h
index 0c90914eea..a6857bce46 100644
--- a/include/LLVMSPIRVOpts.h
+++ b/include/LLVMSPIRVOpts.h
@@ -47,6 +47,7 @@
 #include <map>
 #include <optional>
 #include <unordered_map>
+#include <vector>
 
 namespace llvm {
 class IntrinsicInst;