diff --git a/package-lock.json b/package-lock.json
index c8da20a7..72e2ba5a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -13,7 +13,7 @@
         "@emotion/styled": "^11",
         "@mdx-js/loader": "^3.0.1",
         "@mdx-js/react": "^3.0.1",
-        "@mui/icons-material": "^7",
+        "@mui/icons-material": "^9",
         "@mui/material": "^7",
         "@next/mdx": "^15",
         "@observablehq/plot": "^0.6.17",
@@ -201,9 +201,9 @@
       }
     },
     "node_modules/@babel/runtime": {
-      "version": "7.28.6",
-      "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.28.6.tgz",
-      "integrity": "sha512-05WQkdpL9COIMz4LjTxGpPNCdlpyimKppYNoJ5Di5EUObifl8t4tuLuUBBZEpoLYOmfvIWrsp9fCl0HoPRVTdA==",
+      "version": "7.29.2",
+      "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.29.2.tgz",
+      "integrity": "sha512-JiDShH45zKHWyGe4ZNVRrCjBz8Nh9TMmZG1kh4QTK8hCBTWBi8Da+i7s1fJw7/lYpM4ccepSNfqzZ/QvABBi5g==",
       "license": "MIT",
       "engines": {
         "node": ">=6.9.0"
@@ -2151,12 +2151,12 @@
       }
     },
     "node_modules/@mui/icons-material": {
-      "version": "7.3.7",
-      "resolved": "https://registry.npmjs.org/@mui/icons-material/-/icons-material-7.3.7.tgz",
-      "integrity": "sha512-3Q+ulAqG+A1+R4ebgoIs7AccaJhIGy+Xi/9OnvX376jQ6wcy+rz4geDGrxQxCGzdjOQr4Z3NgyFSZCz4T999lA==",
+      "version": "9.0.0",
+      "resolved": "https://registry.npmjs.org/@mui/icons-material/-/icons-material-9.0.0.tgz",
+      "integrity": "sha512-oDwyvI6LgjWRC9MBcSGvLkPud9S9ELgSBQFYxa1rYcZn6Br55dn22SyvsPDMsn0G8OndFk53iMT45W5mNqrogw==",
       "license": "MIT",
       "dependencies": {
-        "@babel/runtime": "^7.28.4"
+        "@babel/runtime": "^7.29.2"
       },
       "engines": {
         "node": ">=14.0.0"
@@ -2166,7 +2166,7 @@
         "url": "https://opencollective.com/mui-org"
       },
       "peerDependencies": {
-        "@mui/material": "^7.3.7",
+        "@mui/material": "^9.0.0",
         "@types/react": "^17.0.0 || ^18.0.0 || ^19.0.0",
         "react": "^17.0.0 || ^18.0.0 || ^19.0.0"
       },
diff --git a/package.json b/package.json
index 8136d9af..a5187c2d 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
     "@emotion/styled": "^11",
     "@mdx-js/loader": "^3.0.1",
     "@mdx-js/react": "^3.0.1",
-    "@mui/icons-material": "^7",
+    "@mui/icons-material": "^9",
     "@mui/material": "^7",
     "@next/mdx": "^15",
     "@observablehq/plot": "^0.6.17",