diff --git a/src/sql/ColumnType.h b/src/sql/ColumnType.h
index ff8fd540..127f84b5 100644
--- a/src/sql/ColumnType.h
+++ b/src/sql/ColumnType.h
@@ -2,6 +2,7 @@
 #define SQLPARSER_COLUMN_TYPE_H
 
 #include <ostream>
+#include <stdint.h>
 
 namespace hsql {
 enum class DataType {
diff --git a/src/sql/Expr.cpp b/src/sql/Expr.cpp
index 7b788f99..236d79f1 100644
--- a/src/sql/Expr.cpp
+++ b/src/sql/Expr.cpp
@@ -1,6 +1,9 @@
 #include "Expr.h"
+
+#include <stdint.h>
 #include <stdio.h>
 #include <string.h>
+
 #include "SelectStatement.h"
 
 namespace hsql {
diff --git a/src/sql/statements.cpp b/src/sql/statements.cpp
index a5c9942b..4b4e0ab2 100644
--- a/src/sql/statements.cpp
+++ b/src/sql/statements.cpp
@@ -1,4 +1,7 @@
 #include "statements.h"
+
+#include <stdint.h>
+
 #include "AlterStatement.h"
 #include "ImportExportOptions.h"
 
diff --git a/src/util/sqlhelper.cpp b/src/util/sqlhelper.cpp
index 7c2f16d9..a4b0f9dd 100644
--- a/src/util/sqlhelper.cpp
+++ b/src/util/sqlhelper.cpp
@@ -1,8 +1,9 @@
-
 #include "sqlhelper.h"
+
 #include <iostream>
 #include <map>
 #include <sstream>
+#include <stdint.h>
 #include <string>
 
 namespace hsql {