diff --git a/package.json b/package.json
index eab9e10..9ba8a59 100644
--- a/package.json
+++ b/package.json
@@ -53,7 +53,7 @@
     "protractor": "~5.4.3",
     "ts-node": "~8.6.2",
     "tsickle": "0.37.0",
-    "tslib": "^1.7.1",
+    "tslib": "^1.11.1",
     "tslint": "~5.20.1",
     "typescript": "~3.5.3"
   }
diff --git a/yarn.lock b/yarn.lock
index c0635d3..32de991 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -8486,11 +8486,16 @@ tsickle@0.37.0:
     mkdirp "^0.5.1"
     source-map "^0.7.3"
 
-tslib@1.10.0, tslib@^1.7.1, tslib@^1.8.0, tslib@^1.8.1, tslib@^1.9.0:
+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@^1.11.1, tslib@^1.8.0, tslib@^1.8.1, tslib@^1.9.0:
+  version "1.11.1"
+  resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.11.1.tgz#eb15d128827fbee2841549e171f45ed338ac7e35"
+  integrity sha512-aZW88SY8kQbU7gpV19lN24LtXh/yD4ZZg6qieAJDDg+YBsJcSmLGK9QpnUjAKVG/xefmvJGd1WUmfpT/g6AJGA==
+
 tslint@~5.20.1:
   version "5.20.1"
   resolved "https://registry.yarnpkg.com/tslint/-/tslint-5.20.1.tgz#e401e8aeda0152bc44dd07e614034f3f80c67b7d"