diff --git a/package.json b/package.json
index 025fa4ce0b..9cf8c7b048 100644
--- a/package.json
+++ b/package.json
@@ -87,7 +87,7 @@
     "ghost-storage-base": "0.0.4",
     "glob": "7.1.6",
     "got": "9.6.0",
-    "gscan": "3.4.1",
+    "gscan": "3.5.1",
     "html-to-text": "5.1.1",
     "image-size": "0.8.3",
     "intl": "1.2.5",
diff --git a/yarn.lock b/yarn.lock
index 7006c16ed2..3333618e4c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -361,16 +361,6 @@
     ghost-ignition "^4.1.0"
     lodash "^4.17.15"
 
-"@tryghost/extract-zip@1.6.6":
-  version "1.6.6"
-  resolved "https://registry.yarnpkg.com/@tryghost/extract-zip/-/extract-zip-1.6.6.tgz#937e0e775fec6dea937ac49d73a068bcafb67f50"
-  integrity sha512-HZ8Q/HgH36Fn0fOcAC2lGjTylu5ctMQn8jvwtCCiDfkg03BaBYv8xbEqqbDbz2/3v0i9pFrNdXHWheQGM1jXgw==
-  dependencies:
-    concat-stream "1.6.0"
-    debug "2.6.9"
-    mkdirp "0.5.0"
-    yauzl "2.4.1"
-
 "@tryghost/helpers@1.1.25":
   version "1.1.25"
   resolved "https://registry.yarnpkg.com/@tryghost/helpers/-/helpers-1.1.25.tgz#ad24706c765465f0a1e8d7509c9d8c13bc33ed3f"
@@ -561,7 +551,7 @@
     ghost-ignition "^4.0.0"
     lodash "^4.17.15"
 
-"@tryghost/zip@1.0.0":
+"@tryghost/zip@1.0.0", "@tryghost/zip@^1.0.0":
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/@tryghost/zip/-/zip-1.0.0.tgz#4f13e6626e963a263cc60c16f9a13ab5f3956884"
   integrity sha512-6QW7NAZzWRdjRIgG7S+gJzLVn6UkGVMmFVv4Np6AEoMhcc8aU75QvRNZK+SDWvipqmX7xijB5te9HsCONuNkdA==
@@ -1925,15 +1915,6 @@ concat-map@0.0.1:
   resolved "https://registry.yarnpkg.com/concat-map/-/concat-map-0.0.1.tgz#d8a96bd77fd68df7793a73036a3ba0d5405d477b"
   integrity sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=
 
-concat-stream@1.6.0:
-  version "1.6.0"
-  resolved "https://registry.yarnpkg.com/concat-stream/-/concat-stream-1.6.0.tgz#0aac662fd52be78964d5532f694784e70110acf7"
-  integrity sha1-CqxmL9Ur54lk1VMvaUeE5wEQrPc=
-  dependencies:
-    inherits "^2.0.3"
-    readable-stream "^2.2.2"
-    typedarray "^0.0.6"
-
 concat-stream@^1.5.2:
   version "1.6.2"
   resolved "https://registry.yarnpkg.com/concat-stream/-/concat-stream-1.6.2.tgz#904bdf194cd3122fc675c77fc4ac3d4ff0fd1a34"
@@ -3236,13 +3217,6 @@ faye-websocket@~0.10.0:
   dependencies:
     websocket-driver ">=0.5.1"
 
-fd-slicer@~1.0.1:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/fd-slicer/-/fd-slicer-1.0.1.tgz#8b5bcbd9ec327c5041bf9ab023fd6750f1177e65"
-  integrity sha1-i1vL2ewyfFBBv5qwI/1nUPEXfmU=
-  dependencies:
-    pend "~1.2.0"
-
 fd-slicer@~1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/fd-slicer/-/fd-slicer-1.1.0.tgz#25c7c89cb1f9077f8891bbe61d8f390eae256f1e"
@@ -4051,13 +4025,13 @@ grunt@1.1.0:
     path-is-absolute "~1.0.0"
     rimraf "~2.6.2"
 
-gscan@3.4.1:
-  version "3.4.1"
-  resolved "https://registry.yarnpkg.com/gscan/-/gscan-3.4.1.tgz#703151152f2f2fb9bb338dd7d566203268c770e7"
-  integrity sha512-9h8WmvYfuEu57Fk2nxtnhHhXSYxzbPCjWJi0R96e4JUwY9QLbOVO2WBB6CzwKb86JDpiM1UVbBqQLybdZxhS8A==
+gscan@3.5.1:
+  version "3.5.1"
+  resolved "https://registry.yarnpkg.com/gscan/-/gscan-3.5.1.tgz#9f78c9678d73e0c7fc6beaeedf56671807811989"
+  integrity sha512-0H6etw+GL7blKo06Gw9KDh6B+2RMriXGO1WLeBwqmOFRtQoRXPf1JHldeI78yc3wR11mqVGpxi06BgNKUdDsiQ==
   dependencies:
-    "@tryghost/extract-zip" "1.6.6"
     "@tryghost/pretty-cli" "1.2.4"
+    "@tryghost/zip" "^1.0.0"
     bluebird "^3.4.6"
     chalk "^3.0.0"
     common-tags "^1.8.0"
@@ -6005,13 +5979,6 @@ mixin-deep@^1.2.0:
     for-in "^1.0.2"
     is-extendable "^1.0.1"
 
-mkdirp@0.5.0:
-  version "0.5.0"
-  resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-0.5.0.tgz#1d73076a6df986cd9344e15e71fcc05a4c9abf12"
-  integrity sha1-HXMHam35hs2TROFecfzAWkyavxI=
-  dependencies:
-    minimist "0.0.8"
-
 mkdirp@0.5.3:
   version "0.5.3"
   resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-0.5.3.tgz#5a514b7179259287952881e94410ec5465659f8c"
@@ -9787,13 +9754,6 @@ yargs@^3.19.0:
     window-size "^0.1.4"
     y18n "^3.2.0"
 
-yauzl@2.4.1:
-  version "2.4.1"
-  resolved "https://registry.yarnpkg.com/yauzl/-/yauzl-2.4.1.tgz#9528f442dab1b2284e58b4379bb194e22e0c4005"
-  integrity sha1-lSj0QtqxsihOWLQ3m7GU4i4MQAU=
-  dependencies:
-    fd-slicer "~1.0.1"
-
 yauzl@^2.10.0:
   version "2.10.0"
   resolved "https://registry.yarnpkg.com/yauzl/-/yauzl-2.10.0.tgz#c7eb17c93e112cb1086fa6d8e51fb0667b79a5f9"