diff --git a/package-lock.json b/package-lock.json
index f5b8b2c94..732398832 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -3833,6 +3833,32 @@
         "url": "https://opencollective.com/mui-org"
       }
     },
+    "node_modules/@mui/icons-material": {
+      "version": "9.3.1",
+      "integrity": "sha512-rZj5ccG7vkpV38o/l4ys+chfE9GFypmvZr9dSNBoYVCNBD9yC6KfKq1TYpEMshWbjic7GKQ8MA1LQlcpGgcq9Q==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/runtime": "^7.29.7"
+      },
+      "engines": {
+        "node": ">=14.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/mui-org"
+      },
+      "peerDependencies": {
+        "@mui/material": "^9.3.1",
+        "@types/react": "^17.0.0 || ^18.0.0 || ^19.0.0",
+        "react": "^17.0.0 || ^18.0.0 || ^19.0.0"
+      },
+      "peerDependenciesMeta": {
+        "@types/react": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/@mui/material": {
       "version": "5.18.0",
       "dev": true,
@@ -17831,7 +17857,7 @@
         "@finos/fdc3": "3.0.0-alpha.2",
         "@fontsource/roboto": "5.3.0",
         "@fontsource/source-code-pro": "5.3.0",
-        "@mui/icons-material": "^5.15.20",
+        "@mui/icons-material": "^9.3.1",
         "@mui/material": "^5.15.20",
         "@types/jsoneditor": "^8.6.1",
         "@types/react-dom": "18.3.1",
@@ -17862,32 +17888,6 @@
         "node": ">=22"
       }
     },
-    "toolbox/fdc3-workbench/node_modules/@mui/icons-material": {
-      "version": "5.18.0",
-      "integrity": "sha512-1s0vEZj5XFXDMmz3Arl/R7IncFqJ+WQ95LDp1roHWGDE2oCO3IS4/hmiOv1/8SD9r6B7tv9GLiqVZYHo+6PkTg==",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "@babel/runtime": "^7.23.9"
-      },
-      "engines": {
-        "node": ">=12.0.0"
-      },
-      "funding": {
-        "type": "opencollective",
-        "url": "https://opencollective.com/mui-org"
-      },
-      "peerDependencies": {
-        "@mui/material": "^5.0.0",
-        "@types/react": "^17.0.0 || ^18.0.0 || ^19.0.0",
-        "react": "^17.0.0 || ^18.0.0 || ^19.0.0"
-      },
-      "peerDependenciesMeta": {
-        "@types/react": {
-          "optional": true
-        }
-      }
-    },
     "toolbox/fdc3-workbench/node_modules/react": {
       "version": "17.0.2",
       "dev": true,
diff --git a/toolbox/fdc3-workbench/package.json b/toolbox/fdc3-workbench/package.json
index 09003681b..85bc7fcfe 100644
--- a/toolbox/fdc3-workbench/package.json
+++ b/toolbox/fdc3-workbench/package.json
@@ -42,7 +42,7 @@
     "@finos/fdc3": "3.0.0-alpha.2",
     "@fontsource/roboto": "5.3.0",
     "@fontsource/source-code-pro": "5.3.0",
-    "@mui/icons-material": "^5.15.20",
+    "@mui/icons-material": "^9.3.1",
     "@mui/material": "^5.15.20",
     "@types/jsoneditor": "^8.6.1",
     "@types/react-dom": "18.3.1",