diff --git a/package.json b/package.json
index 17293b6..35810c6 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,7 @@
   },
   "dependencies": {
     "codemirror": "^5.29.0",
-    "lodash": "^4.17.4",
+    "lodash": "^4.17.19",
     "nearley": "^2.20.1",
     "randexp": "^0.4.6",
     "react": "^15.6.1",
diff --git a/yarn.lock b/yarn.lock
index f216e3d..3a495f5 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3352,14 +3352,10 @@ lodash.uniq@^4.5.0:
   version "4.5.0"
   resolved "https://registry.yarnpkg.com/lodash.uniq/-/lodash.uniq-4.5.0.tgz#d0225373aeb652adc1bc82e4945339a842754773"
 
-lodash@^4.0.0, lodash@^4.17.11, lodash@~4.17.10:
-  version "4.17.15"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.15.tgz#b447f6670a0455bbfeedd11392eff330ea097548"
-  integrity sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A==
-
-lodash@^4.17.10, lodash@^4.17.4, lodash@^4.17.5:
-  version "4.17.11"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.11.tgz#b39ea6229ef607ecd89e2c8df12536891cac9b8d"
+lodash@^4.0.0, lodash@^4.17.10, lodash@^4.17.11, lodash@^4.17.19, lodash@^4.17.4, lodash@^4.17.5, lodash@~4.17.10:
+  version "4.17.19"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.19.tgz#e48ddedbe30b3321783c5b4301fbd353bc1e4a4b"
+  integrity sha512-JNvd8XER9GQX0v2qJgsaN/mzFCNA5BRe/j8JN9d+tWyGLSodKQHKFicdwNYzWwI3wjRnaKPsGj1XkBjx/F96DQ==
 
 loglevel@^1.4.1:
   version "1.6.1"