diff --git a/package.json b/package.json
index d06c8c4..3b42ef2 100644
--- a/package.json
+++ b/package.json
@@ -19,28 +19,31 @@
   },
   "homepage": "https://github.com/nicgirault/circosJS",
   "devDependencies": {
-    "chai": "^1.10.0",
-    "coffee-coverage": "^0.4.5",
-    "coffee-script": "^1.8.0",
-    "jasmine-core": "^2.3.4",
-    "karma": "^0.13.15",
-    "karma-chai": "^0.1.0",
-    "karma-coffee-preprocessor": "^0.3.0",
-    "karma-coverage": "^0.5.3",
-    "karma-jasmine": "^0.3.6",
-    "karma-mocha": "^0.2.1",
-    "karma-phantomjs-launcher": "^0.2.1",
-    "karma-sinon": "^1.0.4",
-    "phantomjs": "^1.9.18"
+    "chai": "~1.10.0",
+    "coffee-coverage": "~0.4.5",
+    "coffee-script": "~1.8.0",
+    "jasmine-core": "~2.3.4",
+    "karma": "~0.13.15",
+    "karma-chai": "~0.1.0",
+    "karma-coffee-preprocessor": "~0.3.0",
+    "karma-coverage": "~0.5.3",
+    "karma-jasmine": "~0.3.6",
+    "karma-mocha": "~0.2.1",
+    "karma-phantomjs-launcher": "~0.2.1",
+    "karma-sinon": "~1.0.4",
+    "phantomjs": "~1.9.18"
   },
   "dependencies": {
-    "d3": "^3.4.13",
-    "gulp": "^3.9.0",
-    "gulp-browserify": "^0.5.0",
-    "gulp-coffee": "^2.2.0",
-    "gulp-concat": "^2.4.2",
+    "bower": "~1.7.9",
+    "d3": "~3.4.13",
+    "gulp": "~3.9.0",
+    "gulp-browserify": "~0.5.0",
+    "gulp-coffee": "~2.2.0",
+    "gulp-concat": "~2.4.2",
     "gulp-copy": "0.0.2",
-    "gulp-jade": "^0.10.0",
-    "gulp-util": "^3.0.1"
+    "gulp-jade": "~0.10.0",
+    "gulp-util": "~3.0.1",
+    "mocha": "~2.5.3",
+    "sinon": "~1.17.4"
   }
 }