diff --git a/package.json b/package.json
index 1e8876d..a8cd812 100644
--- a/package.json
+++ b/package.json
@@ -37,26 +37,26 @@
   },
   "homepage": "https://ass.js.org/",
   "devDependencies": {
-    "ass-compiler": "0.0.9",
+    "ass-compiler": "0.0.10",
     "chai": "^4.2.0",
     "csso": "^3.5.1",
-    "eslint": "^5.6.1",
+    "eslint": "^5.9.0",
     "eslint-config-airbnb-base": "^13.1.0",
     "eslint-plugin-import": "^2.14.0",
-    "karma": "^3.0.0",
+    "karma": "^3.1.1",
     "karma-chai": "^0.1.0",
     "karma-chrome-launcher": "^2.2.0",
     "karma-coverage": "^1.1.2",
     "karma-mocha": "^1.3.0",
-    "karma-rollup-preprocessor": "^6.0.1",
+    "karma-rollup-preprocessor": "^6.1.1",
     "karma-sauce-launcher": "^1.2.0",
     "mocha": "^5.2.0",
-    "rollup": "^0.66.2",
+    "rollup": "^0.67.3",
     "rollup-plugin-alias": "^1.4.0",
-    "rollup-plugin-buble": "^0.19.2",
+    "rollup-plugin-buble": "^0.19.4",
     "rollup-plugin-istanbul": "^2.0.1",
     "rollup-plugin-node-resolve": "^3.4.0",
-    "rollup-plugin-replace": "^2.0.0",
+    "rollup-plugin-replace": "^2.1.0",
     "uglify-js": "^3.4.9"
   }
 }