diff --git a/.changeset/breezy-cows-do.md b/.changeset/breezy-cows-do.md
new file mode 100644
index 0000000..532c63e
--- /dev/null
+++ b/.changeset/breezy-cows-do.md
@@ -0,0 +1,5 @@
+---
+"water.css": patch
+---
+
+Replace deprecated ::-webkit-details-marker
diff --git a/src/parts/_misc.css b/src/parts/_misc.css
index 25e09b8..94f5d70 100644
--- a/src/parts/_misc.css
+++ b/src/parts/_misc.css
@@ -118,7 +118,8 @@ details > :not(summary) {
   margin-top: 0;
 }
 
-summary::-webkit-details-marker {
+summary::marker,
+summary::-webkit-details-marker /* isn't autoprefixed, kept for backwards compatibility */ {
   color: var(--text-main);
 }
 
diff --git a/src/parts/_print.css b/src/parts/_print.css
index b088192..0717135 100644
--- a/src/parts/_print.css
+++ b/src/parts/_print.css
@@ -34,11 +34,8 @@
     color: #000;
   }
 
-  summary::marker {
-    color: #000;
-  }
-
-  summary::-webkit-details-marker {
+  summary::marker,
+  summary::-webkit-details-marker /* isn't autoprefixed, kept for backwards compatibility */ {
     color: #000;
   }