diff --git a/scripts/symbols.def b/scripts/symbols.def
index e63a0976c..497b15403 100644
--- a/scripts/symbols.def
+++ b/scripts/symbols.def
@@ -235,3 +235,7 @@ EXPORTS
  png_set_alpha_mode @227
  png_set_alpha_mode_fixed @228
  png_set_scale_16 @229
+ png_get_cHRM_XYZ @230
+ png_get_cHRM_XYZ_fixed @231
+ png_set_cHRM_XYZ @232
+ png_set_cHRM_XYZ_fixed @233