diff --git a/package.json b/package.json
index 1a47eaa..203c86b 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,7 @@
   "private": true,
   "homepage": "/rechner",
   "dependencies": {
-    "@material-ui/core": "^3.8.1",
+    "@material-ui/core": "^3.9.4",
     "react": "^16.7.0",
     "react-dom": "^16.7.0",
     "react-scripts": "2.1.3"
diff --git a/yarn.lock b/yarn.lock
old mode 100755
new mode 100644
index 582084e..1900d80
--- a/yarn.lock
+++ b/yarn.lock
@@ -839,6 +839,13 @@
   dependencies:
     regenerator-runtime "^0.12.0"
 
+"@babel/runtime@^7.2.0":
+  version "7.22.5"
+  resolved "https://registry.yarnpkg.com/@babel/runtime/-/runtime-7.22.5.tgz#8564dd588182ce0047d55d7a75e93921107b57ec"
+  integrity sha512-ecjvYlnAaZ/KVneE/OdKYBYfgXV3Ptu6zQWmgEF7vwKhQnvVS6bjMD2XYgj+SNvQ1GfK/pjgokfPkC/2CO8CuA==
+  dependencies:
+    regenerator-runtime "^0.13.11"
+
 "@babel/template@^7.1.0", "@babel/template@^7.1.2", "@babel/template@^7.2.2":
   version "7.2.2"
   resolved "https://registry.yarnpkg.com/@babel/template/-/template-7.2.2.tgz#005b3fdf0ed96e88041330379e0da9a708eb2907"
@@ -877,12 +884,12 @@
   resolved "https://registry.yarnpkg.com/@csstools/convert-colors/-/convert-colors-1.4.0.tgz#ad495dc41b12e75d588c6db8b9834f08fa131eb7"
   integrity sha512-5a6wqoJV/xEdbRNKVo6I4hO3VjyDq//8q2f9I6PBAvMesJHFauXDorcNCsr9RzvsZnaWi5NYCcfyqP1QeFHFbw==
 
-"@material-ui/core@^3.8.1":
-  version "3.8.1"
-  resolved "https://registry.yarnpkg.com/@material-ui/core/-/core-3.8.1.tgz#ee8697732afd1856504044646c20a33ca1c6fab5"
-  integrity sha512-YhVanMT+DBaw8te6WbpU+RGm/wPYwT2FXlz0JGEexSOReDK3zVuyQJ7mTyDEE+HZQH6p1s6CTXXIH4CoivpogQ==
+"@material-ui/core@^3.9.4":
+  version "3.9.4"
+  resolved "https://registry.yarnpkg.com/@material-ui/core/-/core-3.9.4.tgz#5297fd4ad9e739a87da4a6d34fc4af5396886e13"
+  integrity sha512-r8QFLSexcYZbnqy/Hn4v8xzmAJV41yaodUVjmbGLi1iGDLG3+W941hEtEiBmxTRRqv2BdK3r4ijILcqKmDv/Sw==
   dependencies:
-    "@babel/runtime" "7.2.0"
+    "@babel/runtime" "^7.2.0"
     "@material-ui/system" "^3.0.0-alpha.0"
     "@material-ui/utils" "^3.0.0-alpha.2"
     "@types/jss" "^9.5.6"
@@ -902,7 +909,6 @@
     jss-nested "^6.0.1"
     jss-props-sort "^6.0.0"
     jss-vendor-prefixer "^7.0.0"
-    keycode "^2.1.9"
     normalize-scroll-left "^0.1.2"
     popper.js "^1.14.1"
     prop-types "^15.6.0"
@@ -6185,11 +6191,6 @@ jsx-ast-utils@^2.0.1:
   dependencies:
     array-includes "^3.0.3"
 
-keycode@^2.1.9:
-  version "2.2.0"
-  resolved "https://registry.yarnpkg.com/keycode/-/keycode-2.2.0.tgz#3d0af56dc7b8b8e5cba8d0a97f107204eec22b04"
-  integrity sha1-PQr1bce4uOXLqNCpfxByBO7CKwQ=
-
 killable@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/killable/-/killable-1.0.1.tgz#4c8ce441187a061c7474fb87ca08e2a638194892"
@@ -8925,6 +8926,11 @@ regenerator-runtime@^0.12.0:
   resolved "https://registry.yarnpkg.com/regenerator-runtime/-/regenerator-runtime-0.12.1.tgz#fa1a71544764c036f8c49b13a08b2594c9f8a0de"
   integrity sha512-odxIc1/vDlo4iZcfXqRYFj0vpXFNoGdKMAUieAlFYO6m/nl5e9KR/beGf41z4a1FI+aQgtjhuaSlDxQ0hmkrHg==
 
+regenerator-runtime@^0.13.11:
+  version "0.13.11"
+  resolved "https://registry.yarnpkg.com/regenerator-runtime/-/regenerator-runtime-0.13.11.tgz#f6dca3e7ceec20590d07ada785636a90cdca17f9"
+  integrity sha512-kY1AZVr2Ra+t+piVaJ4gxaFaReZVH40AKNo7UCX6W+dEwBo/2oZJzqfuN1qLq1oL45o56cPaTXELwrTh8Fpggg==
+
 regenerator-transform@^0.13.3:
   version "0.13.3"
   resolved "https://registry.yarnpkg.com/regenerator-transform/-/regenerator-transform-0.13.3.tgz#264bd9ff38a8ce24b06e0636496b2c856b57bcbb"