diff --git a/package.json b/package.json
index 03e6a2e..f531395 100644
--- a/package.json
+++ b/package.json
@@ -55,7 +55,7 @@
     "rollup-plugin-typescript2": "0.26.0",
     "rollup-plugin-yaml": "2.0.0",
     "sinon": "9.0.0",
-    "sinon-chai": "3.4.0",
+    "sinon-chai": "3.5.0",
     "source-map-support": "0.5.16",
     "standard-version": "7.1.0",
     "tslint": "5.20.0",
diff --git a/yarn.lock b/yarn.lock
index ccc3a24..4f99a73 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3328,10 +3328,10 @@ signal-exit@^3.0.0, signal-exit@^3.0.2:
   resolved "https://artifacts.apextoaster.com/repository/group-npm/signal-exit/-/signal-exit-3.0.2.tgz#b5fdc08f1287ea1178628e415e25132b73646c6d"
   integrity sha1-tf3AjxKH6hF4Yo5BXiUTK3NkbG0=
 
-sinon-chai@3.4.0:
-  version "3.4.0"
-  resolved "https://artifacts.apextoaster.com/repository/group-npm/sinon-chai/-/sinon-chai-3.4.0.tgz#06fb88dee80decc565106a3061d380007f21e18d"
-  integrity sha512-BpVxsjEkGi6XPbDXrgWUe7Cb1ZzIfxKUbu/MmH5RoUnS7AXpKo3aIYIyQUg0FMvlUL05aPt7VZuAdaeQhEnWxg==
+sinon-chai@3.5.0:
+  version "3.5.0"
+  resolved "https://artifacts.apextoaster.com/repository/group-npm/sinon-chai/-/sinon-chai-3.5.0.tgz#c9a78304b0e15befe57ef68e8a85a00553f5c60e"
+  integrity sha512-IifbusYiQBpUxxFJkR3wTU68xzBN0+bxCScEaKMjBvAQERg6FnTTc1F17rseLb1tjmkJ23730AXpFI0c47FgAg==
 
 sinon@9.0.0:
   version "9.0.0"