diff --git a/VisualC/external/include/tiffio.h b/VisualC/external/include/tiffio.h
index 558f4365..9eac2494 100644
--- a/VisualC/external/include/tiffio.h
+++ b/VisualC/external/include/tiffio.h
@@ -326,7 +326,6 @@ extern TIFFDataType TIFFFieldDataType(const TIFFField*);
 extern int TIFFFieldPassCount(const TIFFField*);
 extern int TIFFFieldReadCount(const TIFFField*);
 extern int TIFFFieldWriteCount(const TIFFField*);
-extern int TIFFFieldIsAnonymous(const TIFFField *);
 
 typedef int (*TIFFVSetMethod)(TIFF*, uint32, va_list);
 typedef int (*TIFFVGetMethod)(TIFF*, uint32, va_list);
diff --git a/VisualC/external/optional/x64/libtiff-5.dll b/VisualC/external/optional/x64/libtiff-5.dll
index 0453caf0..af35ed0c 100644
Binary files a/VisualC/external/optional/x64/libtiff-5.dll and b/VisualC/external/optional/x64/libtiff-5.dll differ
diff --git a/VisualC/external/optional/x86/libtiff-5.dll b/VisualC/external/optional/x86/libtiff-5.dll
index 74108847..c053d8d4 100644
Binary files a/VisualC/external/optional/x86/libtiff-5.dll and b/VisualC/external/optional/x86/libtiff-5.dll differ
diff --git a/external/libtiff b/external/libtiff
index 0f31f742..faff88b6 160000
--- a/external/libtiff
+++ b/external/libtiff
@@ -1 +1 @@
-Subproject commit 0f31f742aaef929d61f6d5d2411df12c04be6a97
+Subproject commit faff88b66fbca0dfedc73216f1992a7069cf36fb