diff --git a/packages/@opticss/simple-template/package.json b/packages/@opticss/simple-template/package.json
index 1fb85097..10402b2b 100644
--- a/packages/@opticss/simple-template/package.json
+++ b/packages/@opticss/simple-template/package.json
@@ -42,7 +42,7 @@
     "@opticss/element-analysis": "^0.6.2",
     "@opticss/template-api": "^0.6.3",
     "@opticss/util": "^0.7.0",
-    "@types/random-js": "^1.0.30",
+    "@types/random-js": "^2.0.0",
     "parse5": "^5.0.0",
     "parse5-sax-parser": "^5.0.0",
     "postcss": "^7.0.14",
diff --git a/packages/opticss/package.json b/packages/opticss/package.json
index 5bf711e5..5d357bc0 100644
--- a/packages/opticss/package.json
+++ b/packages/opticss/package.json
@@ -61,7 +61,7 @@
     "@types/chai": "^4.0.4",
     "@types/mocha": "^5.2.6",
     "@types/node": "^11.13.8",
-    "@types/random-js": "^1.0.30",
+    "@types/random-js": "^2.0.0",
     "chai": "^4.1.2",
     "css-size": "^4.0.1",
     "istanbul": "^0.4.5",