diff --git a/package-lock.json b/package-lock.json
index 8e04f3c139..f598049639 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -30,7 +30,7 @@
         "idiomorph": "0.3.0",
         "jquery": "3.7.1",
         "katex": "0.16.11",
-        "mermaid": "11.2.1",
+        "mermaid": "11.3.0",
         "mini-css-extract-plugin": "2.9.1",
         "minimatch": "10.0.1",
         "monaco-editor": "0.51.0",
@@ -7561,9 +7561,9 @@
       }
     },
     "node_modules/dompurify": {
-      "version": "3.1.7",
-      "resolved": "https://registry.npmjs.org/dompurify/-/dompurify-3.1.7.tgz",
-      "integrity": "sha512-VaTstWtsneJY8xzy7DekmYWEOZcmzIe3Qb3zPd4STve1OBTa+e+WmS1ITQec1fZYXI3HCsOZZiSMpG6oxoWMWQ==",
+      "version": "3.1.6",
+      "resolved": "https://registry.npmjs.org/dompurify/-/dompurify-3.1.6.tgz",
+      "integrity": "sha512-cTOAhc36AalkjtBpfG6O8JimdTMWNXjiePT2xQH/ppBGi/4uIpmj8eKyIkMJErXWARyINV/sB38yf8JCLF5pbQ==",
       "license": "(MPL-2.0 OR Apache-2.0)"
     },
     "node_modules/domutils": {
@@ -12036,9 +12036,9 @@
       }
     },
     "node_modules/mermaid": {
-      "version": "11.2.1",
-      "resolved": "https://registry.npmjs.org/mermaid/-/mermaid-11.2.1.tgz",
-      "integrity": "sha512-F8TEaLVVyxTUmvKswVFyOkjPrlJA5h5vNR1f7ZnSWSpqxgEZG1hggtn/QCa7znC28bhlcrNh10qYaIiill7q4A==",
+      "version": "11.3.0",
+      "resolved": "https://registry.npmjs.org/mermaid/-/mermaid-11.3.0.tgz",
+      "integrity": "sha512-fFmf2gRXLtlGzug4wpIGN+rQdZ30M8IZEB1D3eZkXNqC7puhqeURBcD/9tbwXsqBO+A6Nzzo3MSSepmnw5xSeg==",
       "license": "MIT",
       "dependencies": {
         "@braintree/sanitize-url": "^7.0.1",
@@ -12051,7 +12051,7 @@
         "d3-sankey": "^0.12.3",
         "dagre-d3-es": "7.0.10",
         "dayjs": "^1.11.10",
-        "dompurify": "^3.0.11",
+        "dompurify": "^3.0.11 <3.1.7",
         "katex": "^0.16.9",
         "khroma": "^2.1.0",
         "lodash-es": "^4.17.21",
diff --git a/package.json b/package.json
index ac9e401bc3..41748d235f 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,7 @@
     "idiomorph": "0.3.0",
     "jquery": "3.7.1",
     "katex": "0.16.11",
-    "mermaid": "11.2.1",
+    "mermaid": "11.3.0",
     "mini-css-extract-plugin": "2.9.1",
     "minimatch": "10.0.1",
     "monaco-editor": "0.51.0",
diff --git a/release-notes/5459.md b/release-notes/5459.md
new file mode 100644
index 0000000000..fb1c5b873c
--- /dev/null
+++ b/release-notes/5459.md
@@ -0,0 +1 @@
+feat: New mermaid [flowchart shapes](https://mermaid.js.org/syntax/flowchart.html#complete-list-of-new-shapes).