diff --git a/package.json b/package.json
index baaf230..0ac3299 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,8 @@
     "body-parser": "^1.18.3",
     "express": "^4.16.4",
     "left-pad": "^1.3.0",
-    "morgan": "^1.9.1"
+    "morgan": "^1.9.1",
+    "raw-body": "^2.3.3"
   },
   "scripts": {
     "build": "tsc",
diff --git a/yarn.lock b/yarn.lock
index 1c9201d..7109891 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2945,7 +2945,7 @@ range-parser@~1.2.0:
   resolved "https://registry.yarnpkg.com/range-parser/-/range-parser-1.2.0.tgz#f49be6b487894ddc40dcc94a322f611092e00d5e"
   integrity sha1-9JvmtIeJTdxA3MlKMi9hEJLgDV4=
 
-raw-body@2.3.3:
+raw-body@2.3.3, raw-body@^2.3.3:
   version "2.3.3"
   resolved "https://registry.yarnpkg.com/raw-body/-/raw-body-2.3.3.tgz#1b324ece6b5706e153855bc1148c65bb7f6ea0c3"
   integrity sha512-9esiElv1BrZoI3rCDuOuKCBRbuApGGaDPQfjSflGxdy4oyzqghxu6klEkkVIvBje+FF0BX9coEv8KqW6X/7njw==