diff --git a/src/lib_c/x86_64-darwin/c/sys/stat.cr b/src/lib_c/x86_64-darwin/c/sys/stat.cr
index cf352007a72b..2c6f8778ac91 100644
--- a/src/lib_c/x86_64-darwin/c/sys/stat.cr
+++ b/src/lib_c/x86_64-darwin/c/sys/stat.cr
@@ -28,15 +28,16 @@ lib LibC
 
   struct Stat
     st_dev : DevT
-    st_ino : InoT
     st_mode : ModeT
     st_nlink : NlinkT
+    st_ino : InoT
     st_uid : UidT
     st_gid : GidT
     st_rdev : DevT
     st_atimespec : Timespec
     st_mtimespec : Timespec
     st_ctimespec : Timespec
+    st_birthtimespec : Timespec
     st_size : OffT
     st_blocks : BlkcntT
     st_blksize : BlksizeT
@@ -47,11 +48,11 @@ lib LibC
   end
 
   fun chmod(x0 : Char*, x1 : ModeT) : Int
-  fun fstat(x0 : Int, x1 : Stat*) : Int
-  fun lstat(x0 : Char*, x1 : Stat*) : Int
+  fun fstat = fstat64(x0 : Int, x1 : Stat*) : Int
+  fun lstat = lstat64(x0 : Char*, x1 : Stat*) : Int
   fun mkdir(x0 : Char*, x1 : ModeT) : Int
   fun mkfifo(x0 : Char*, x1 : ModeT) : Int
   fun mknod(x0 : Char*, x1 : ModeT, x2 : DevT) : Int
-  fun stat(x0 : Char*, x1 : Stat*) : Int
+  fun stat = stat64(x0 : Char*, x1 : Stat*) : Int
   fun umask(x0 : ModeT) : ModeT
 end
diff --git a/src/lib_c/x86_64-darwin/c/sys/types.cr b/src/lib_c/x86_64-darwin/c/sys/types.cr
index 0eaec24901ad..836ac0c1c43d 100644
--- a/src/lib_c/x86_64-darwin/c/sys/types.cr
+++ b/src/lib_c/x86_64-darwin/c/sys/types.cr
@@ -8,7 +8,7 @@ lib LibC
   alias DevT = Int
   alias GidT = UInt
   alias IdT = UInt
-  alias InoT = UInt
+  alias InoT = UInt64
   alias ModeT = UShort
   alias NlinkT = UShort
   alias OffT = LongLong