diff --git a/package.json b/package.json
index 1216431..a0c3fe5 100644
--- a/package.json
+++ b/package.json
@@ -38,10 +38,10 @@
         "chalk": "^2.4.0",
         "commander": "^2.15.1",
         "glob": "^7.1.2",
-        "gzip-size": "^4.0.0",
+        "gzip-size": "^5.1.1",
         "jsonpack": "^1.1.5",
         "lodash.merge": "^4.6.1",
-        "read-pkg-up": "^3.0.0"
+        "read-pkg-up": "^6.0.0"
     },
     "devDependencies": {
         "axios-mock-adapter": "^1.15.0",
diff --git a/src/bin/determineConfig.js b/src/bin/determineConfig.js
index d1d267c..febadd9 100644
--- a/src/bin/determineConfig.js
+++ b/src/bin/determineConfig.js
@@ -52,7 +52,7 @@ const getConfigFileContents = configFilePath => {
 }
 
 const determineConfig = cliOptions => {
-    const pkgJson = readPkgUp.sync().pkg
+    const pkgJson = (readPkgUp.sync() || {}).package
     let pkgJsonbundlewatch = pkgJson.bundlewatch
 
     if (cliOptions.args && cliOptions.args.length > 0) {
diff --git a/yarn.lock b/yarn.lock
index c0d5d96..5dacb92 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2505,13 +2505,13 @@ growly@^1.3.0:
   resolved "https://registry.yarnpkg.com/growly/-/growly-1.3.0.tgz#f10748cbe76af964b7c96c93c6bcc28af120c081"
   integrity sha1-8QdIy+dq+WS3yWyTxrzCivEgwIE=
 
-gzip-size@^4.0.0:
-  version "4.1.0"
-  resolved "https://registry.yarnpkg.com/gzip-size/-/gzip-size-4.1.0.tgz#8ae096257eabe7d69c45be2b67c448124ffb517c"
-  integrity sha1-iuCWJX6r59acRb4rZ8RIEk/7UXw=
+gzip-size@^5.1.1:
+  version "5.1.1"
+  resolved "https://registry.yarnpkg.com/gzip-size/-/gzip-size-5.1.1.tgz#cb9bee692f87c0612b232840a873904e4c135274"
+  integrity sha512-FNHi6mmoHvs1mxZAds4PpdCS6QG8B4C1krxJsMutgxl5t3+GlRTzzI3NEkifXx2pVsOvJdOGSmIgDhQ55FwdPA==
   dependencies:
     duplexer "^0.1.1"
-    pify "^3.0.0"
+    pify "^4.0.1"
 
 handlebars@^4.1.2:
   version "4.1.2"
@@ -4677,14 +4677,6 @@ read-pkg-up@^2.0.0:
     find-up "^2.0.0"
     read-pkg "^2.0.0"
 
-read-pkg-up@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/read-pkg-up/-/read-pkg-up-3.0.0.tgz#3ed496685dba0f8fe118d0691dc51f4a1ff96f07"
-  integrity sha1-PtSWaF26D4/hGNBpHcUfSh/5bwc=
-  dependencies:
-    find-up "^2.0.0"
-    read-pkg "^3.0.0"
-
 read-pkg-up@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/read-pkg-up/-/read-pkg-up-4.0.0.tgz#1b221c6088ba7799601c808f91161c66e58f8978"
@@ -4693,6 +4685,15 @@ read-pkg-up@^4.0.0:
     find-up "^3.0.0"
     read-pkg "^3.0.0"
 
+read-pkg-up@^6.0.0:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/read-pkg-up/-/read-pkg-up-6.0.0.tgz#da75ce72762f2fa1f20c5a40d4dd80c77db969e3"
+  integrity sha512-odtTvLl+EXo1eTsMnoUHRmg/XmXdTkwXVxy4VFE9Kp6cCq7b3l7QMdBndND3eAFzrbSAXC/WCUOQQ9rLjifKZw==
+  dependencies:
+    find-up "^4.0.0"
+    read-pkg "^5.1.1"
+    type-fest "^0.5.0"
+
 read-pkg@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/read-pkg/-/read-pkg-2.0.0.tgz#8ef1c0623c6a6db0dc6713c4bfac46332b2368f8"
@@ -5521,6 +5522,11 @@ type-check@~0.3.2:
   dependencies:
     prelude-ls "~1.1.2"
 
+type-fest@^0.5.0:
+  version "0.5.2"
+  resolved "https://registry.yarnpkg.com/type-fest/-/type-fest-0.5.2.tgz#d6ef42a0356c6cd45f49485c3b6281fc148e48a2"
+  integrity sha512-DWkS49EQKVX//Tbupb9TFa19c7+MK1XmzkrZUR8TAktmE/DizXoaoJV6TZ/tSIPXipqNiRI6CyAe7x69Jb6RSw==
+
 type-fest@^0.6.0:
   version "0.6.0"
   resolved "https://registry.yarnpkg.com/type-fest/-/type-fest-0.6.0.tgz#8d2a2370d3df886eb5c90ada1c5bf6188acf838b"