diff --git a/crates/emmylua_code_analysis/src/compilation/test/generic_test.rs b/crates/emmylua_code_analysis/src/compilation/test/generic_test.rs
index 7ab212826..4019b5e37 100644
--- a/crates/emmylua_code_analysis/src/compilation/test/generic_test.rs
+++ b/crates/emmylua_code_analysis/src/compilation/test/generic_test.rs
@@ -816,4 +816,17 @@ mod test {
         let result_ty = ws.expr_ty("result");
         assert_eq!(ws.humanize_type(result_ty), "integer");
     }
+
+    #[test]
+    fn test_extends_true() {
+        let mut ws = VirtualWorkspace::new();
+        assert!(ws.check_code_for(
+            DiagnosticCode::TypeNotFound,
+            r#"
+            ---@alias TestA<T> T extends "test" and number or string
+            ---@alias TestB<T> T extends true and number or string
+            ---@alias TestC<T> T extends 111 and number or string
+            "#,
+        ));
+    }
 }
diff --git a/crates/emmylua_parser/src/lexer/lua_doc_lexer.rs b/crates/emmylua_parser/src/lexer/lua_doc_lexer.rs
index 7accb73cc..02a59688e 100644
--- a/crates/emmylua_parser/src/lexer/lua_doc_lexer.rs
+++ b/crates/emmylua_parser/src/lexer/lua_doc_lexer.rs
@@ -688,6 +688,9 @@ impl LuaDocLexer<'_> {
             ch if is_name_start(ch) => {
                 let (text, _) = read_doc_name(reader);
                 match text {
+                    "true" => LuaTokenKind::TkTrue,
+                    "false" => LuaTokenKind::TkFalse,
+                    "nil" => LuaTokenKind::TkNil,
                     "new" => LuaTokenKind::TkDocNew,
                     _ => LuaTokenKind::TkName,
                 }