diff --git a/package.json b/package.json
index 4cdf617..9ec1123 100644
--- a/package.json
+++ b/package.json
@@ -34,7 +34,7 @@
         "postinstall": "node -e \"var s='../src',d='node_modules/src',fs=require('fs');fs.exists(d,function(e){e||fs.symlinkSync(s,d,'dir')});\""
     },
     "dependencies": {
-        "dot-prop": "^4.2.0",
+        "dot-prop": "^5.1.1",
         "lodash.mapvalues": "^4.6.0",
         "lodash.mergewith": "^4.6.0"
     },
diff --git a/yarn.lock b/yarn.lock
index 5a8b128..9728bbf 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1533,11 +1533,11 @@ dot-prop@^3.0.0:
   dependencies:
     is-obj "^1.0.0"
 
-dot-prop@^4.2.0:
-  version "4.2.0"
-  resolved "https://registry.yarnpkg.com/dot-prop/-/dot-prop-4.2.0.tgz#1f19e0c2e1aa0e32797c49799f2837ac6af69c57"
+dot-prop@^5.1.1:
+  version "5.1.1"
+  resolved "https://registry.yarnpkg.com/dot-prop/-/dot-prop-5.1.1.tgz#85783b39f2a54e04ae1981489a0ef2b9719bbd7d"
   dependencies:
-    is-obj "^1.0.0"
+    is-obj "^2.0.0"
 
 download@^4.1.2:
   version "4.4.3"
@@ -2886,6 +2886,10 @@ is-obj@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/is-obj/-/is-obj-1.0.1.tgz#3e4729ac1f5fde025cd7d83a896dab9f4f67db0f"
 
+is-obj@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/is-obj/-/is-obj-2.0.0.tgz#473fb05d973705e3fd9620545018ca8e22ef4982"
+
 is-object@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/is-object/-/is-object-1.0.1.tgz#8952688c5ec2ffd6b03ecc85e769e02903083470"