diff --git a/packages/rrreol-ui/package.json b/packages/rrreol-ui/package.json
index 7230427..a76b8ac 100644
--- a/packages/rrreol-ui/package.json
+++ b/packages/rrreol-ui/package.json
@@ -14,7 +14,7 @@
   "dependencies": {
     "@material-ui/core": "^4.0.1",
     "@material-ui/styles": "^4.4.3",
-    "@material-ui/system": "^3.0.0-alpha.2",
+    "@material-ui/system": "^4.12.1",
     "memoize-one": "^5.0.4",
     "prop-types": "^15.7.2",
     "react": "^16.8.6",
diff --git a/yarn.lock b/yarn.lock
index 8dba06f..b025254 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2686,25 +2686,15 @@
     jss-plugin-vendor-prefixer "10.0.0-alpha.25"
     prop-types "^15.7.2"
 
-"@material-ui/system@^3.0.0-alpha.2":
-  version "3.0.0-alpha.2"
-  resolved "https://registry.npm.taobao.org/@material-ui/system/download/@material-ui/system-3.0.0-alpha.2.tgz#096e80c8bb0f70aea435b9e38ea7749ee77b4e46"
-  integrity sha1-CW6AyLsPcK6kNbnjjqd0nud7TkY=
-  dependencies:
-    "@babel/runtime" "^7.2.0"
-    deepmerge "^3.0.0"
-    prop-types "^15.6.0"
-    warning "^4.0.1"
-
-"@material-ui/system@^4.0.1":
-  version "4.0.1"
-  resolved "https://registry.yarnpkg.com/@material-ui/system/-/system-4.0.1.tgz#d78969f3dd9eb6baf82ded0ef183368d8befb00b"
-  integrity sha512-NlMF4jZk1xx7taUOT+QhrJw7v7uUi9Ae+G8C8fowGgP5x04whxOuSuSmN9a8u2j7dc8XqahR0OJeA6Xch8ymog==
+"@material-ui/system@^4.0.1", "@material-ui/system@^4.12.1":
+  version "4.12.1"
+  resolved "https://registry.yarnpkg.com/@material-ui/system/-/system-4.12.1.tgz#2dd96c243f8c0a331b2bb6d46efd7771a399707c"
+  integrity sha512-lUdzs4q9kEXZGhbN7BptyiS1rLNHe6kG9o8Y307HCvF4sQxbCgpL2qi+gUk+yI8a2DNk48gISEQxoxpgph0xIw==
   dependencies:
-    "@babel/runtime" "^7.2.0"
-    deepmerge "^3.0.0"
+    "@babel/runtime" "^7.4.4"
+    "@material-ui/utils" "^4.11.2"
+    csstype "^2.5.2"
     prop-types "^15.7.2"
-    warning "^4.0.1"
 
 "@material-ui/types@^4.0.1", "@material-ui/types@^4.1.1":
   version "4.1.1"
@@ -2713,14 +2703,14 @@
   dependencies:
     "@types/react" "*"
 
-"@material-ui/utils@^4.0.1", "@material-ui/utils@^4.1.0":
-  version "4.4.0"
-  resolved "https://registry.yarnpkg.com/@material-ui/utils/-/utils-4.4.0.tgz#9275421e2798a067850d201212d46f12725828ad"
-  integrity sha512-UXoQVwArQEQWXxf2FPs0iJGT+MePQpKr0Qh0CPoLc1OdF0GSMTmQczcqCzwZkeHxHAOq/NkIKM1Pb/ih1Avicg==
+"@material-ui/utils@^4.0.1", "@material-ui/utils@^4.1.0", "@material-ui/utils@^4.11.2":
+  version "4.11.2"
+  resolved "https://registry.yarnpkg.com/@material-ui/utils/-/utils-4.11.2.tgz#f1aefa7e7dff2ebcb97d31de51aecab1bb57540a"
+  integrity sha512-Uul8w38u+PICe2Fg2pDKCaIG7kOyhowZ9vjiC1FsVwPABTW8vPPKfF6OvxRq3IiBaI1faOJmgdvMG7rMJARBhA==
   dependencies:
     "@babel/runtime" "^7.4.4"
     prop-types "^15.7.2"
-    react-is "^16.8.6"
+    react-is "^16.8.0 || ^17.0.0"
 
 "@mrmlnc/readdir-enhanced@^2.2.1":
   version "2.2.1"
@@ -12149,6 +12139,11 @@ react-is@^16.7.0, react-is@^16.8.1, react-is@^16.8.4, react-is@^16.8.6:
   resolved "https://registry.npm.taobao.org/react-is/download/react-is-16.8.6.tgz#5bbc1e2d29141c9fbdfed456343fe2bc430a6a16"
   integrity sha1-W7weLSkUHJ+9/tRWND/ivEMKahY=
 
+"react-is@^16.8.0 || ^17.0.0":
+  version "17.0.2"
+  resolved "https://registry.yarnpkg.com/react-is/-/react-is-17.0.2.tgz#e691d4a8e9c789365655539ab372762b0efb54f0"
+  integrity sha512-w2GsyukL62IJnlaff/nRegPQR94C/XXamvMWmSHRJ4y7Ts/4ocGRmTHvOs8PSE6pB3dWOrD/nueuU5sduBsQ4w==
+
 react-redux@^7.0.2:
   version "7.0.3"
   resolved "https://registry.npm.taobao.org/react-redux/download/react-redux-7.0.3.tgz#983c5a6de81cb1e696bd1c090ba826545f9170f1"