diff --git a/include/wincodecsdk.idl b/include/wincodecsdk.idl
index e681c6404d0..fcf05b6b6b5 100644
--- a/include/wincodecsdk.idl
+++ b/include/wincodecsdk.idl
@@ -52,8 +52,11 @@ cpp_quote("DEFINE_GUID(CLSID_WICUnknownMetadataWriter, 0xa09cca86,0x27ba,0x4f39,
 cpp_quote("DEFINE_GUID(CLSID_WICPngTextMetadataReader, 0x4b59afcc,0xb8c3,0x408a,0xb6,0x70,0x89,0xe5,0xfa,0xb6,0xfd,0xa7);")
 cpp_quote("DEFINE_GUID(CLSID_WICPngTextMetadataWriter, 0xb5ebafb9,0x253e,0x4a72,0xa7,0x44,0x07,0x62,0xd2,0x68,0x56,0x83);")
 cpp_quote("DEFINE_GUID(CLSID_WICIfdMetadataReader, 0x8f914656,0x9d0a,0x4eb2,0x90,0x19,0x0b,0xf9,0x6d,0x8a,0x9e,0xe6);")
+cpp_quote("DEFINE_GUID(CLSID_WICIfdMetadataWriter, 0xb1ebfc28,0xc9bd,0x47a2,0x8d,0x33,0xb9,0x48,0x76,0x97,0x77,0xa7);")
 cpp_quote("DEFINE_GUID(CLSID_WICExifMetadataReader, 0xd9403860,0x297f,0x4a49,0xbf,0x9b,0x77,0x89,0x81,0x50,0xa4,0x42);")
+cpp_quote("DEFINE_GUID(CLSID_WICExifMetadataWriter, 0xc9a14cda,0xc339,0x460b,0x90,0x78,0xd4,0xde,0xbc,0xfa,0xbe,0x91);")
 cpp_quote("DEFINE_GUID(CLSID_WICXMPStructMetadataReader, 0x01b90d9a,0x8209,0x47f7,0x9c,0x52,0xe1,0x24,0x4b,0xf5,0x0c,0xed);")
+cpp_quote("DEFINE_GUID(CLSID_WICXMPStructMetadataWriter, 0x22c21f93,0x7ddb,0x411c,0x9b,0x17,0xc5,0xb7,0xbd,0x06,0x4a,0xbc);")
 
 typedef struct WICMetadataPattern {
     ULARGE_INTEGER Position;