diff --git a/CHANGES.md b/CHANGES.md
index 3a1fbc4c4a..9ea48d5cc2 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -2,6 +2,7 @@
 
 Grammars:
 
+- Added 3rd party Apex grammar to SUPPORTED_LANGUAGES (#3546) [David Schach][]
 - fix(rust) recognize `include_bytes!` macro (#3541) [Serial-ATA][]
 - fix(java) do not intepret `==` as a variable declaration [Mousetail][]
 - enh(swift) add SE-0335 existential `any` keyword (#3515) [Bradley Mackey][]
@@ -12,6 +13,7 @@ Grammars:
 - Added 3rd party Oak grammar to SUPPORTED_LANGUAGES [Tim Smith][]
 - enh(python) add `match` and `case` keywords [Avrumy Lunger][]
 
+[David Schach]: https://github.com/dschach
 [Serial-ATA]: https://github.com/Serial-ATA
 [Bradley Mackey]: https://github.com/bradleymackey
 [Marcus Ortiz]: https://github.com/mportiz08
diff --git a/SUPPORTED_LANGUAGES.md b/SUPPORTED_LANGUAGES.md
index eb1e9e9f62..03c91b54b4 100644
--- a/SUPPORTED_LANGUAGES.md
+++ b/SUPPORTED_LANGUAGES.md
@@ -13,6 +13,7 @@ The table below shows the full list of languages (and corresponding classes/alia
 | ABNF                    | abnf                   |         |
 | Access logs             | accesslog              |         |
 | Ada                     | ada                    |         |
+| Apex                    | apex                   | [highlightjs-apex](https://github.com/highlightjs/highlightjs-apex/)   |
 | Arduino (C++ w/Arduino libs) | arduino, ino           |         |
 | ARM assembler           | armasm, arm            |         |
 | AVR assembler           | avrasm                 |         |