diff --git a/types.h b/types.h
index cd25ff8..69e74d4 100644
--- a/types.h
+++ b/types.h
@@ -4,4 +4,13 @@ typedef unsigned char  u8;
 typedef unsigned short u16;
 typedef unsigned int   u32;
 typedef unsigned long  u64;
-typedef u64            size_t;
+
+typedef unsigned char  uint8_t;
+typedef unsigned short uint16_t;
+typedef unsigned int   uint32_t;
+typedef unsigned long  uint64_t;
+typedef uint64_t       size_t;
+
+typedef uint64_t uintptr_t;
+
+typedef u8 bool;