diff --git a/package-lock.json b/package-lock.json
index 21ab0efe..057d1ca7 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1149,6 +1149,7 @@
       "version": "2.10.1",
       "resolved": "https://registry.npmjs.org/boom/-/boom-2.10.1.tgz",
       "integrity": "sha1-OciRjO/1eZ+D+UkqhI9iWt0Mdm8=",
+      "optional": true,
       "requires": {
         "hoek": "2.x.x"
       }
@@ -1584,9 +1585,9 @@
       }
     },
     "chownr": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/chownr/-/chownr-1.1.1.tgz",
-      "integrity": "sha512-j38EvO5+LHX84jlo6h4UzmOwi0UgW61WRyPtJz4qaadK5eY3BTS5TY/S1Stc3Uk2lIM6TPevAlULiEJwie860g=="
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/chownr/-/chownr-1.1.3.tgz",
+      "integrity": "sha512-i70fVHhmV3DtTl6nqvZOnIjbY0Pe4kAUjwHj8z0zAdgBtYrJyYwLKCCuRBQ5ppkyL0AkN7HKRnETdmdp1zqNXw=="
     },
     "circular-json": {
       "version": "0.3.3",
@@ -3529,11 +3530,11 @@
       }
     },
     "fs-minipass": {
-      "version": "1.2.5",
-      "resolved": "https://registry.npmjs.org/fs-minipass/-/fs-minipass-1.2.5.tgz",
-      "integrity": "sha512-JhBl0skXjUPCFH7x6x61gQxrKyXsxB5gcgePLZCwfyCGGsTISMoIeObbrvVeP6Xmyaudw4TT43qV2Gz+iyd2oQ==",
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/fs-minipass/-/fs-minipass-2.0.0.tgz",
+      "integrity": "sha512-40Qz+LFXmd9tzYVnnBmZvFfvAADfUA14TXPK1s7IfElJTIZ97rA8w4Kin7Wt5JBrC3ShnnFJO/5vPjPEeJIq9A==",
       "requires": {
-        "minipass": "^2.2.1"
+        "minipass": "^3.0.0"
       }
     },
     "fs-readfile-promise": {
@@ -4968,7 +4969,8 @@
     "hoek": {
       "version": "2.16.3",
       "resolved": "https://registry.npmjs.org/hoek/-/hoek-2.16.3.tgz",
-      "integrity": "sha1-ILt0A9POo5jpHcRxCo/xuCdKJe0="
+      "integrity": "sha1-ILt0A9POo5jpHcRxCo/xuCdKJe0=",
+      "optional": true
     },
     "home-or-tmp": {
       "version": "2.0.0",
@@ -6448,20 +6450,20 @@
       "integrity": "sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0="
     },
     "minipass": {
-      "version": "2.3.5",
-      "resolved": "https://registry.npmjs.org/minipass/-/minipass-2.3.5.tgz",
-      "integrity": "sha512-Gi1W4k059gyRbyVUZQ4mEqLm0YIUiGYfvxhF6SIlk3ui1WVxMTGfGdQ2SInh3PDrRTVvPKgULkpJtT4RH10+VA==",
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/minipass/-/minipass-3.0.0.tgz",
+      "integrity": "sha512-FKNU4XrAPDX0+ynwns7njVu4RolyG1mUKSlT6n6GwGXLtYSYh2Znc0S83Rl6zEr1zgFfXvAzIBabnmItm+n19g==",
       "requires": {
-        "safe-buffer": "^5.1.2",
-        "yallist": "^3.0.0"
+        "yallist": "^4.0.0"
       }
     },
     "minizlib": {
-      "version": "1.2.1",
-      "resolved": "https://registry.npmjs.org/minizlib/-/minizlib-1.2.1.tgz",
-      "integrity": "sha512-7+4oTUOWKg7AuL3vloEWekXY2/D20cevzsrNT2kGWm+39J9hGTCBv8VI5Pm5lXZ/o3/mdR4f8rflAPhnQb8mPA==",
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/minizlib/-/minizlib-2.0.0.tgz",
+      "integrity": "sha512-8f6fgftVu7S2bYKe4Ks9jS5ViU/3As9kEmCg6p9T5OCDAzxVooUmhhSqGar19ZR07xh0rknj9ZmGme0bv0d+Nw==",
       "requires": {
-        "minipass": "^2.2.1"
+        "minipass": "^3.0.0",
+        "yallist": "^4.0.0"
       }
     },
     "mitt": {
@@ -6830,8 +6832,7 @@
         "npmlog": "^4.0.2",
         "rc": "^1.2.7",
         "rimraf": "^2.6.1",
-        "semver": "^5.3.0",
-        "tar": "^4"
+        "semver": "^5.3.0"
       }
     },
     "node-sass": {
@@ -13526,17 +13527,16 @@
       }
     },
     "tar": {
-      "version": "4.4.8",
-      "resolved": "https://registry.npmjs.org/tar/-/tar-4.4.8.tgz",
-      "integrity": "sha512-LzHF64s5chPQQS0IYBn9IN5h3i98c12bo4NCO7e0sGM2llXQ3p2FGC5sdENN4cTW48O915Sh+x+EXx7XW96xYQ==",
-      "requires": {
-        "chownr": "^1.1.1",
-        "fs-minipass": "^1.2.5",
-        "minipass": "^2.3.4",
-        "minizlib": "^1.1.1",
+      "version": "5.0.2",
+      "resolved": "https://registry.npmjs.org/tar/-/tar-5.0.2.tgz",
+      "integrity": "sha512-s6QnhHIoyEPImp1Y4Tq3UOhPMT6/4kgHwzeZc9fbgq0/+s6RAzezIT43Meepn5RdUFpxdzQkd5x2PkcFdVIEPw==",
+      "requires": {
+        "chownr": "^1.1.3",
+        "fs-minipass": "^2.0.0",
+        "minipass": "^3.0.0",
+        "minizlib": "^2.0.0",
         "mkdirp": "^0.5.0",
-        "safe-buffer": "^5.1.2",
-        "yallist": "^3.0.2"
+        "yallist": "^4.0.0"
       }
     },
     "ternary-stream": {
@@ -14387,9 +14387,9 @@
       "integrity": "sha1-bRX7qITAhnnA136I53WegR4H+kE="
     },
     "yallist": {
-      "version": "3.0.3",
-      "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.0.3.tgz",
-      "integrity": "sha512-S+Zk8DEWE6oKpV+vI3qWkaK+jSbIK86pCwe2IF/xwIpQ8jEuxpw9NyaGjmp9+BoJv5FV2piqCDcoCtStppiq2A=="
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz",
+      "integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A=="
     },
     "yargs": {
       "version": "9.0.1",
diff --git a/package.json b/package.json
index 7147fc01..b287dc92 100644
--- a/package.json
+++ b/package.json
@@ -86,7 +86,7 @@
     "s3": "^4.4.0",
     "socket.io": "^2.0.4",
     "stringify-object": "^3.2.1",
-    "tar": "^4.2.0",
+    "tar": "^5.0.2",
     "urldecode": "^1.0.1",
     "yargs": "^9.0.1"
   },