diff --git a/changelog/v2.4.2.md b/changelog/v2.4.2.md
new file mode 100644
index 0000000..e16649d
--- /dev/null
+++ b/changelog/v2.4.2.md
@@ -0,0 +1,4 @@
+# v2.4.2
+
+* Relaxes dependency to `attrs` (see [#47](https://github.com/markmap/mkdocs-markmap/issues/47))
+* Fix for rendering in SPA (see [#42](https://github.com/markmap/mkdocs-markmap/issues/42))
diff --git a/mkdocs_markmap/__meta__.py b/mkdocs_markmap/__meta__.py
index 339620e..a75d0ab 100644
--- a/mkdocs_markmap/__meta__.py
+++ b/mkdocs_markmap/__meta__.py
@@ -1,6 +1,6 @@
 PACKAGE_NAME: str = "mkdocs_markmap"
 PROJECT_NAME: str = PACKAGE_NAME.replace("_", "-")
-PROJECT_VERSION: str = "2.4.1"
+PROJECT_VERSION: str = "2.4.2"
 
 OWNER: str = "neatc0der"
 ORGANISATION: str = "markmap"
diff --git a/mkdocs_markmap/plugin.py b/mkdocs_markmap/plugin.py
index b7f00e5..b11239e 100644
--- a/mkdocs_markmap/plugin.py
+++ b/mkdocs_markmap/plugin.py
@@ -127,7 +127,7 @@ def on_page_content(self, html: str, page: Page, **kwargs) -> str:
                 code = markmap
             pre.name = "div"
             pre["class"] = pre.get("class", []) + ["mkdocs-markmap"]
-            code.name = "script"
-            code["type"] = "text/template"
+            code.name = "markmap-data"
+            code.attrs["hidden"] = "true"
 
         return str(soup)
diff --git a/mkdocs_markmap/static_files/mkdocs-markmap.js b/mkdocs_markmap/static_files/mkdocs-markmap.js
index 048bcae..3715fc7 100644
--- a/mkdocs_markmap/static_files/mkdocs-markmap.js
+++ b/mkdocs_markmap/static_files/mkdocs-markmap.js
@@ -38,25 +38,25 @@
         });
     }
 
-    function updateMarkmaps() {
-        const markmaps = document.getElementsByClassName('mkdocs-markmap');
-        for (var i = 0; i < markmaps.length; i++) {
-            const el = markmaps[i];
+    function updateMarkmaps(node) {
+        for (const el of node.querySelectorAll('.mkdocs-markmap')) {
             renderMarkmap(el);
         }
     }
 
     loading.then(() => {
-        var MutationObserver = window.MutationObserver || window.WebKitMutationObserver;
-        var observer = new MutationObserver(function(mutations) {
-            updateMarkmaps();
+        const observer = new MutationObserver((mutationList) => {
+            for (const mutation of mutationList) {
+                if (mutation.type === 'childList') {
+                    for (const node of mutation.addedNodes) {
+                        updateMarkmaps(node);
+                    }
+                }
+            }
         });
 
-        var target = document.getElementById('mkdocs-decrypted-content');
-        if (undefined != target) {
-            observer.observe(target, { childList: true });
-        }
+        observer.observe(document.body, { childList: true });
 
-        updateMarkmaps();
+        updateMarkmaps(document);
     });
 })();
diff --git a/requirements/prod.txt b/requirements/prod.txt
index 4f09ec2..5cfc07e 100644
--- a/requirements/prod.txt
+++ b/requirements/prod.txt
@@ -1,5 +1,5 @@
 mkdocs>=1.3,<2
-attrs==20.3.0
+attrs>=20.3.0
 beautifulsoup4>=4.6.3
 requests<3