diff --git a/ractive-koa/package-lock.json b/ractive-koa/package-lock.json
index e76ee08..5544d27 100644
--- a/ractive-koa/package-lock.json
+++ b/ractive-koa/package-lock.json
@@ -176,11 +176,6 @@
             "resolved": "https://registry.npmjs.org/character-parser/-/character-parser-1.2.1.tgz",
             "integrity": "sha1-wN3kqxgnE7kZuXCVmhI+zBow/NY="
         },
-        "chownr": {
-            "version": "1.1.3",
-            "resolved": "https://registry.npmjs.org/chownr/-/chownr-1.1.3.tgz",
-            "integrity": "sha512-i70fVHhmV3DtTl6nqvZOnIjbY0Pe4kAUjwHj8z0zAdgBtYrJyYwLKCCuRBQ5ppkyL0AkN7HKRnETdmdp1zqNXw=="
-        },
         "clean-css": {
             "version": "3.4.28",
             "resolved": "https://registry.npmjs.org/clean-css/-/clean-css-3.4.28.tgz",
@@ -2147,26 +2142,41 @@
             }
         },
         "tar": {
-            "version": "4.4.13",
-            "resolved": "https://registry.npmjs.org/tar/-/tar-4.4.13.tgz",
-            "integrity": "sha512-w2VwSrBoHa5BsSyH+KxEqeQBAllHhccyMFVHtGtdMpF4W7IRWfZjFiQceJPChOeTsSDVUpER2T8FA93pr0L+QA==",
-            "requires": {
-                "chownr": "^1.1.1",
-                "fs-minipass": "^1.2.5",
-                "minipass": "^2.8.6",
-                "minizlib": "^1.2.1",
-                "mkdirp": "^0.5.0",
-                "safe-buffer": "^5.1.2",
-                "yallist": "^3.0.3"
+            "version": "4.4.19",
+            "resolved": "https://registry.npmjs.org/tar/-/tar-4.4.19.tgz",
+            "integrity": "sha512-a20gEsvHnWe0ygBY8JbxoM4w3SJdhc7ZAuxkLqh+nvNQN2IOt0B5lLgM490X5Hl8FF0dl0tOf2ewFYAlIFgzVA==",
+            "requires": {
+                "chownr": "^1.1.4",
+                "fs-minipass": "^1.2.7",
+                "minipass": "^2.9.0",
+                "minizlib": "^1.3.3",
+                "mkdirp": "^0.5.5",
+                "safe-buffer": "^5.2.1",
+                "yallist": "^3.1.1"
             },
             "dependencies": {
+                "chownr": {
+                    "version": "1.1.4",
+                    "resolved": "https://registry.npmjs.org/chownr/-/chownr-1.1.4.tgz",
+                    "integrity": "sha512-jJ0bqzaylmJtVnNgzTeSOs8DPavpbYgEr/b0YL8/2GO3xJEhInFmhKMUnEJQjZumK7KXGFhUy89PrsJWlakBVg=="
+                },
+                "minimist": {
+                    "version": "1.2.5",
+                    "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.5.tgz",
+                    "integrity": "sha512-FM9nNUYrRBAELZQT3xeZQ7fmMOBg6nWNmJKTcgsJeaLstP/UODVpGsr5OhXhhXg6f+qtJ8uiZ+PUxkDWcgIXLw=="
+                },
                 "mkdirp": {
-                    "version": "0.5.1",
-                    "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.1.tgz",
-                    "integrity": "sha1-MAV0OOrGz3+MR2fzhkjWaX11yQM=",
+                    "version": "0.5.5",
+                    "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.5.tgz",
+                    "integrity": "sha512-NKmAlESf6jMGym1++R0Ra7wvhV+wFW63FaSOFPwRahvea0gMUcGUhVeAg/0BC0wiv9ih5NYPB1Wn1UEI1/L+xQ==",
                     "requires": {
-                        "minimist": "0.0.8"
+                        "minimist": "^1.2.5"
                     }
+                },
+                "safe-buffer": {
+                    "version": "5.2.1",
+                    "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.2.1.tgz",
+                    "integrity": "sha512-rp3So07KcdmmKbGvgaNxQSJr7bGVSVk5S9Eq1F+ppbRo70+YeaDxkw5Dd8NPN+GD6bjnYm2VuPuCXmpuYvmCXQ=="
                 }
             }
         },