diff --git a/package.json b/package.json
index 36b962e..fd4e624 100644
--- a/package.json
+++ b/package.json
@@ -26,9 +26,9 @@
   "author": "Nathanael CHERRIER <https://github.com/Mindsers>",
   "license": "MIT",
   "devDependencies": {
-    "@babel/core": "^7.4.3",
-    "@babel/preset-env": "^7.4.3",
-    "@babel/register": "^7.4.0",
+    "@babel/core": "7.4.3",
+    "@babel/preset-env": "7.4.3",
+    "@babel/register": "7.4.0",
     "babel-plugin-istanbul": "5.1.1",
     "chai": "4.2.0",
     "chai-spies": "1.0.0",
diff --git a/yarn.lock b/yarn.lock
index 2ef6b65..1b6c679 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -9,7 +9,7 @@
   dependencies:
     "@babel/highlight" "^7.0.0"
 
-"@babel/core@^7.4.3":
+"@babel/core@7.4.3":
   version "7.4.3"
   resolved "https://registry.yarnpkg.com/@babel/core/-/core-7.4.3.tgz#198d6d3af4567be3989550d97e068de94503074f"
   integrity sha512-oDpASqKFlbspQfzAE7yaeTmdljSH2ADIvBlb0RwbStltTuWa0+7CCI1fYVINNv9saHPa1W7oaKeuNuKj+RQCvA==
@@ -531,7 +531,7 @@
     "@babel/helper-regex" "^7.4.3"
     regexpu-core "^4.5.4"
 
-"@babel/preset-env@^7.4.3":
+"@babel/preset-env@7.4.3":
   version "7.4.3"
   resolved "https://registry.yarnpkg.com/@babel/preset-env/-/preset-env-7.4.3.tgz#e71e16e123dc0fbf65a52cbcbcefd072fbd02880"
   integrity sha512-FYbZdV12yHdJU5Z70cEg0f6lvtpZ8jFSDakTm7WXeJbLXh4R0ztGEu/SW7G1nJ2ZvKwDhz8YrbA84eYyprmGqw==
@@ -585,7 +585,7 @@
     js-levenshtein "^1.1.3"
     semver "^5.5.0"
 
-"@babel/register@^7.4.0":
+"@babel/register@7.4.0":
   version "7.4.0"
   resolved "https://registry.yarnpkg.com/@babel/register/-/register-7.4.0.tgz#d9d0a621db268fb14200f2685a4f8924c822404c"
   integrity sha512-ekziebXBnS/7V6xk8sBfLSSD6YZuy6P29igBtR6OL/tswKdxOV+Yqq0nzICMguVYtGRZYUCGpfGV8J9Za2iBdw==