diff --git a/package.json b/package.json
index 8830bfa..4437f6e 100644
--- a/package.json
+++ b/package.json
@@ -52,7 +52,7 @@
     "css-loader": "0.28.1",
     "enzyme": "3.3.0",
     "enzyme-adapter-react-16": "1.1.1",
-    "enzyme-to-json": "^3.3.4",
+    "enzyme-to-json": "3.3.4",
     "eslint": "4.5.0",
     "eslint-config-airbnb": "15.1.0",
     "eslint-loader": "1.9.0",
diff --git a/yarn.lock b/yarn.lock
index 4329d62..b44934f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2711,6 +2711,12 @@ enzyme-adapter-utils@^1.3.0:
     object.assign "^4.1.0"
     prop-types "^15.6.0"
 
+enzyme-to-json@3.3.4:
+  version "3.3.4"
+  resolved "https://registry.yarnpkg.com/enzyme-to-json/-/enzyme-to-json-3.3.4.tgz#67c6040e931182f183418af2eb9f4323258aa77f"
+  dependencies:
+    lodash "^4.17.4"
+
 enzyme@3.3.0:
   version "3.3.0"
   resolved "https://registry.yarnpkg.com/enzyme/-/enzyme-3.3.0.tgz#0971abd167f2d4bf3f5bd508229e1c4b6dc50479"