diff --git a/Packages/SwiftyOpenCC/OpenCC/src/DartsDict.cpp b/Packages/SwiftyOpenCC/OpenCC/src/DartsDict.cpp
index 888bcc01..70bc63d3 100644
--- a/Packages/SwiftyOpenCC/OpenCC/src/DartsDict.cpp
+++ b/Packages/SwiftyOpenCC/OpenCC/src/DartsDict.cpp
@@ -18,6 +18,7 @@
 
 #include <algorithm>
 #include <cstring>
+#include <malloc/_malloc.h>
 
 #include "BinaryDict.hpp"
 #include "DartsDict.hpp"
diff --git a/Packages/SwiftyOpenCC/OpenCC/src/DictConverter.cpp b/Packages/SwiftyOpenCC/OpenCC/src/DictConverter.cpp
index 0271c74e..76a7d1ae 100644
--- a/Packages/SwiftyOpenCC/OpenCC/src/DictConverter.cpp
+++ b/Packages/SwiftyOpenCC/OpenCC/src/DictConverter.cpp
@@ -16,6 +16,7 @@
  * limitations under the License.
  */
 
+#include <stdlib.h>
 #include "DictConverter.hpp"
 #include "MarisaDict.hpp"
 #include "TextDict.hpp"