diff --git a/build/types/core b/build/types/core
index 27caffd2ea..eb29b9e7a7 100644
--- a/build/types/core
+++ b/build/types/core
@@ -55,6 +55,7 @@
 +../../lib/text/simple_text_displayer.js
 +../../lib/text/text_engine.js
 +../../lib/text/ui_text_displayer.js
++../../lib/text/web_vtt_generator.js
 
 +../../lib/util/abortable_operation.js
 +../../lib/util/array_utils.js
diff --git a/build/types/text b/build/types/text
index c3ee246801..c6535865fa 100644
--- a/build/types/text
+++ b/build/types/text
@@ -8,4 +8,3 @@
 +../../lib/text/ssa_text_parser.js
 +../../lib/text/ttml_text_parser.js
 +../../lib/text/vtt_text_parser.js
-+../../lib/text/web_vtt_generator.js