diff --git a/png.h b/png.h
index d7da6b5c6..59cf83248 100644
--- a/png.h
+++ b/png.h
@@ -3346,7 +3346,7 @@ PNG_EXPORT(244, int, png_set_option, (png_structrp png_ptr, int option,
  * one to use is one more than this.)
  */
 #ifdef PNG_EXPORT_LAST_ORDINAL
-  PNG_EXPORT_LAST_ORDINAL(251);
+  PNG_EXPORT_LAST_ORDINAL(259);
 #endif
 
 #ifdef __cplusplus
diff --git a/scripts/pnglibconf.h.prebuilt b/scripts/pnglibconf.h.prebuilt
index f5d1c3cad..dafa47e99 100644
--- a/scripts/pnglibconf.h.prebuilt
+++ b/scripts/pnglibconf.h.prebuilt
@@ -89,11 +89,13 @@
 #define PNG_READ_bKGD_SUPPORTED
 #define PNG_READ_cHRM_SUPPORTED
 #define PNG_READ_cICP_SUPPORTED
+#define PNG_READ_cLLI_SUPPORTED
 #define PNG_READ_eXIf_SUPPORTED
 #define PNG_READ_gAMA_SUPPORTED
 #define PNG_READ_hIST_SUPPORTED
 #define PNG_READ_iCCP_SUPPORTED
 #define PNG_READ_iTXt_SUPPORTED
+#define PNG_READ_mDCV_SUPPORTED
 #define PNG_READ_oFFs_SUPPORTED
 #define PNG_READ_pCAL_SUPPORTED
 #define PNG_READ_pHYs_SUPPORTED
@@ -160,11 +162,13 @@
 #define PNG_WRITE_bKGD_SUPPORTED
 #define PNG_WRITE_cHRM_SUPPORTED
 #define PNG_WRITE_cICP_SUPPORTED
+#define PNG_WRITE_cLLI_SUPPORTED
 #define PNG_WRITE_eXIf_SUPPORTED
 #define PNG_WRITE_gAMA_SUPPORTED
 #define PNG_WRITE_hIST_SUPPORTED
 #define PNG_WRITE_iCCP_SUPPORTED
 #define PNG_WRITE_iTXt_SUPPORTED
+#define PNG_WRITE_mDCV_SUPPORTED
 #define PNG_WRITE_oFFs_SUPPORTED
 #define PNG_WRITE_pCAL_SUPPORTED
 #define PNG_WRITE_pHYs_SUPPORTED
@@ -179,11 +183,13 @@
 #define PNG_bKGD_SUPPORTED
 #define PNG_cHRM_SUPPORTED
 #define PNG_cICP_SUPPORTED
+#define PNG_cLLI_SUPPORTED
 #define PNG_eXIf_SUPPORTED
 #define PNG_gAMA_SUPPORTED
 #define PNG_hIST_SUPPORTED
 #define PNG_iCCP_SUPPORTED
 #define PNG_iTXt_SUPPORTED
+#define PNG_mDCV_SUPPORTED
 #define PNG_oFFs_SUPPORTED
 #define PNG_pCAL_SUPPORTED
 #define PNG_pHYs_SUPPORTED
diff --git a/scripts/symbols.def b/scripts/symbols.def
index 305bd1a28..d17b63067 100644
--- a/scripts/symbols.def
+++ b/scripts/symbols.def
@@ -255,3 +255,11 @@ EXPORTS
  png_set_eXIf_1 @249
  png_get_cICP @250
  png_set_cICP @251
+ png_get_cLLI @252
+ png_get_cLLI_fixed @253
+ png_set_cLLI @254
+ png_set_cLLI_fixed @255
+ png_get_mDCV @256
+ png_get_mDCV_fixed @257
+ png_set_mDCV @258
+ png_set_mDCV_fixed @259