diff --git a/package.json b/package.json
index 7d6ae4c..b5446bd 100644
--- a/package.json
+++ b/package.json
@@ -57,7 +57,7 @@
     "prepublish": "yarn run lint && yarn run test && yarn run build"
   },
   "dependencies": {
-    "deepmerge": "^1.5.1"
+    "lodash.merge": "^4.6.0"
   },
   "peerDependencies": {
     "chart.js": "^2.6.0",
diff --git a/src/helpers/options.js b/src/helpers/options.js
index 99769c8..ccae233 100644
--- a/src/helpers/options.js
+++ b/src/helpers/options.js
@@ -1,4 +1,4 @@
-import merge from 'deepmerge'
+import merge from 'lodash.merge'
 
 export function mergeOptions (obj, src) {
   return merge(obj, src)
diff --git a/test/unit/specs/helpers/options.spec.js b/test/unit/specs/helpers/options.spec.js
index 47cefb9..ce01e21 100644
--- a/test/unit/specs/helpers/options.spec.js
+++ b/test/unit/specs/helpers/options.spec.js
@@ -41,8 +41,8 @@ describe('mergeOptions.js', () => {
 
   it('should add c if c is new', () => {
     const ac = mergeOptions(a, c)
-    expect(ac).to.have.property('a').and.to.equal('a')
-    expect(ac).to.have.property('b').and.to.equal('a')
+    expect(ac).to.have.property('a').and.to.equal('b')
+    expect(ac).to.have.property('b').and.to.equal('b')
     expect(ac).to.have.property('c').and.to.equal('c')
   })
 
diff --git a/yarn.lock b/yarn.lock
index ebd70f2..459a64e 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1663,10 +1663,6 @@ deep-is@~0.1.3:
   version "0.1.3"
   resolved "https://registry.yarnpkg.com/deep-is/-/deep-is-0.1.3.tgz#b369d6fb5dbc13eecf524f91b070feedc357cf34"
 
-deepmerge@^1.5.1:
-  version "1.5.1"
-  resolved "https://registry.yarnpkg.com/deepmerge/-/deepmerge-1.5.1.tgz#c053bf06fd7276f1994f70c09a0760cb61a56237"
-
 defined@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/defined/-/defined-1.0.0.tgz#c98d9bcef75674188e110969151199e39b1fa693"
@@ -3548,6 +3544,10 @@ lodash.keysin@^4.0.0:
   version "4.2.0"
   resolved "https://registry.yarnpkg.com/lodash.keysin/-/lodash.keysin-4.2.0.tgz#8cc3fb35c2d94acc443a1863e02fa40799ea6f28"
 
+lodash.merge@^4.6.0:
+  version "4.6.0"
+  resolved "https://registry.yarnpkg.com/lodash.merge/-/lodash.merge-4.6.0.tgz#69884ba144ac33fe699737a6086deffadd0f89c5"
+
 lodash.mergewith@^4.0.0, lodash.mergewith@^4.6.0:
   version "4.6.0"
   resolved "https://registry.yarnpkg.com/lodash.mergewith/-/lodash.mergewith-4.6.0.tgz#150cf0a16791f5903b8891eab154609274bdea55"