diff --git a/package-lock.json b/package-lock.json
index 486a5e7..74d06ba 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "naturalness",
-  "version": "1.0.7",
+  "version": "1.0.15",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -471,9 +471,9 @@
       }
     },
     "lodash": {
-      "version": "4.17.14",
-      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.14.tgz",
-      "integrity": "sha512-mmKYbW3GLuJeX+iGP+Y7Gp1AiGHGbXHCOh/jZmrawMmsE7MS4znI3RL2FsjbqOyMayHInjOeykW7PEajUk1/xw==",
+      "version": "4.17.21",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
+      "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==",
       "dev": true
     },
     "log-symbols": {
@@ -981,6 +981,12 @@
           "integrity": "sha512-3t6rVToeoZfYSGd8YoLFR2DJkiQrIiUrGcjvFX2mDw3bn6k2OtwHN0TNCLbBO+w8qTvimhDkv+LSscbJY1vE6w==",
           "dev": true
         },
+        "lodash": {
+          "version": "4.17.14",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.14.tgz",
+          "integrity": "sha512-mmKYbW3GLuJeX+iGP+Y7Gp1AiGHGbXHCOh/jZmrawMmsE7MS4znI3RL2FsjbqOyMayHInjOeykW7PEajUk1/xw==",
+          "dev": true
+        },
         "require-main-filename": {
           "version": "1.0.1",
           "resolved": "https://registry.npmjs.org/require-main-filename/-/require-main-filename-1.0.1.tgz",
diff --git a/package.json b/package.json
index 37e09fb..5129fe1 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,7 @@
   },
   "homepage": "https://github.com/labri-progress/naturalness-js#readme",
   "devDependencies": {
-    "lodash": ">=4.17.13",
+    "lodash": ">=4.17.21",
     "chai": "^4.2.0",
     "mocha": "^6.1.4"
   }