1 files changed, 2 insertions, 1 deletions
diff --git a/sha3.h b/sha3.h
index 7ee1c11..ed59bed 100644
--- a/sha3.h
+++ b/sha3.h
@@ -36,7 +36,8 @@
 extern "C" {
 #endif /* __cplusplus */
 
-#include <stdint.h>
+#include <stddef.h> // size_t
+#include <stdint.h> // uint8_t, uint64_t
 
 // Internal SHA-3 state.
 typedef union {