diff --git a/package.json b/package.json
index c558f37a..5a4d3780 100644
--- a/package.json
+++ b/package.json
@@ -142,6 +142,7 @@
     "scrollparent": "^2.0.1",
     "slugify": "^1.0.2",
     "stream-http": "^2.6.1",
+    "ts-helpers": "^1.1.2",
     "zone.js": "^0.8.14"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index bfe5fa14..aac301db 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -6165,7 +6165,7 @@ trim-right@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/trim-right/-/trim-right-1.0.1.tgz#cb2e1203067e0c8de1f614094b9fe45704ea6003"
 
-ts-helpers@^1.1.1:
+ts-helpers@^1.1.2:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/ts-helpers/-/ts-helpers-1.1.2.tgz#fc69be9f1f3baed01fb1a0ef8d4cfe748814d835"