diff --git a/CHANGELOG.md b/CHANGELOG.md
index 31b33c809..a4995a0cb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,8 @@
 * Produce better output for numbers with complex units in `meta.inspect()` and
   debugging messages.
 
+* Escape U+007F DELETE when serializing strings.
+
 * When generating CSS error messages to display in-browser, escape all code
   points that aren't in the US-ASCII region. Previously only code points U+0100
   LATIN CAPITAL LETTER A WITH MACRON were escaped.
diff --git a/lib/src/visitor/serialize.dart b/lib/src/visitor/serialize.dart
index 676a4876b..9ab203073 100644
--- a/lib/src/visitor/serialize.dart
+++ b/lib/src/visitor/serialize.dart
@@ -1090,7 +1090,8 @@ final class _SerializeVisitor
               $fs ||
               $gs ||
               $rs ||
-              $us:
+              $us ||
+              $del:
           _writeEscape(buffer, char, string, i);
 
         case $backslash:
diff --git a/pubspec.yaml b/pubspec.yaml
index 6f666281e..c42d2133e 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -42,7 +42,7 @@ dev_dependencies:
   archive: ^3.1.2
   crypto: ^3.0.0
   dart_style: ^2.0.0
-  dartdoc: ">=6.0.0 <8.0.0"
+  dartdoc: ">=6.0.0 <9.0.0"
   grinder: ^0.9.0
   node_preamble: ^2.0.2
   lints: ">=2.0.0 <4.0.0"