diff --git a/package.json b/package.json
index 764f717..793a8ca 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,7 @@
   "dependencies": {
     "@microsoft/sp-core-library": "1.10.0",
     "@microsoft/sp-lodash-subset": "1.10.0",
-    "@microsoft/sp-office-ui-fabric-core": "1.10.0",
+    "@microsoft/sp-office-ui-fabric-core": "1.12.1",
     "@microsoft/sp-property-pane": "1.10.0",
     "@microsoft/sp-webpart-base": "1.10.0",
     "@types/es6-promise": "0.0.33",
diff --git a/yarn.lock b/yarn.lock
index 2b0fb5e..8134797 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -539,14 +539,13 @@
   dependencies:
     tslib "~1.9.3"
 
-"@microsoft/sp-office-ui-fabric-core@1.10.0":
-  version "1.10.0"
-  resolved "https://registry.yarnpkg.com/@microsoft/sp-office-ui-fabric-core/-/sp-office-ui-fabric-core-1.10.0.tgz#b704e5192042bdd35a19827d82c07d80d672f162"
-  integrity sha512-UGcK/1Nq1g/TKYvY499S3ofLyHHCTZ93BILE77KEXr4+FdZmsboWvrLNaoA0rp5bABjrdVyNYwNkT8vvFXK5PQ==
+"@microsoft/sp-office-ui-fabric-core@1.12.1":
+  version "1.12.1"
+  resolved "https://registry.yarnpkg.com/@microsoft/sp-office-ui-fabric-core/-/sp-office-ui-fabric-core-1.12.1.tgz#971f39304822222911838736dd22cb5328e2244d"
+  integrity sha512-gmh6rfaGzxxOPwtfc+ye0tbpcUaPSFTHTSWOMog3UshLkHXul52WJislGsRBVmImD6IU5Mw22J4+cMe7wl1+ww==
   dependencies:
-    "@types/webpack-env" "1.13.1"
     office-ui-fabric-core "9.6.1-fluent2"
-    tslib "~1.9.3"
+    tslib "~1.10.0"
 
 "@microsoft/sp-page-context@1.10.0":
   version "1.10.0"
@@ -10841,6 +10840,11 @@ tslib@^1.10.0, tslib@^1.7.1, tslib@^1.8.0, tslib@^1.8.1, tslib@^1.9.0, tslib@^1.
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.11.1.tgz#eb15d128827fbee2841549e171f45ed338ac7e35"
   integrity sha512-aZW88SY8kQbU7gpV19lN24LtXh/yD4ZZg6qieAJDDg+YBsJcSmLGK9QpnUjAKVG/xefmvJGd1WUmfpT/g6AJGA==
 
+tslib@~1.10.0:
+  version "1.10.0"
+  resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.10.0.tgz#c3c19f95973fb0a62973fb09d90d961ee43e5c8a"
+  integrity sha512-qOebF53frne81cf0S9B41ByenJ3/IuH8yJKngAX35CmiZySA0khhkovshKK+jGCaMnVomla7gVlIcc3EvKPbTQ==
+
 tslib@~1.9.3:
   version "1.9.3"
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.9.3.tgz#d7e4dd79245d85428c4d7e4822a79917954ca286"