diff --git a/package.json b/package.json
index 441c3045..629e86be 100644
--- a/package.json
+++ b/package.json
@@ -145,7 +145,8 @@
     "slugify": "^1.2.1",
     "stickyfill": "^1.1.1",
     "styled-components": "^3.2.3",
-    "swagger2openapi": "^2.11.0"
+    "swagger2openapi": "^2.11.0",
+    "tslib": "^1.9.1"
   },
   "resolutions": {
     "@types/chai": "4.0.8",
diff --git a/yarn.lock b/yarn.lock
index 92520c25..7c5da8d1 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -9447,6 +9447,10 @@ tslib@^1.8.0, tslib@^1.8.1:
   version "1.9.0"
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.9.0.tgz#e37a86fda8cbbaf23a057f473c9f4dc64e5fc2e8"
 
+tslib@^1.9.1:
+  version "1.9.1"
+  resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.9.1.tgz#a5d1f0532a49221c87755cfcc89ca37197242ba7"
+
 tslint-react@^3.4.0:
   version "3.6.0"
   resolved "https://registry.yarnpkg.com/tslint-react/-/tslint-react-3.6.0.tgz#7f462c95c4a0afaae82507f06517ff02942196a1"