diff --git a/package.json b/package.json
index 52dac66..6ae7f4e 100644
--- a/package.json
+++ b/package.json
@@ -13,8 +13,8 @@
   },
   "dependencies": {
     "compression": "^1.7.1",
-    "polka": "^0.3.4",
-    "sapper": "^0.12.0",
+    "polka": "^0.4.0",
+    "sapper": "^0.13.0",
     "sirv": "^0.1.1"
   },
   "devDependencies": {