diff --git a/package.json b/package.json
index 38637d1..03ffdf8 100644
--- a/package.json
+++ b/package.json
@@ -84,7 +84,7 @@
     "quick-lru": "^2.0.0",
     "remount": "^0.9.5",
     "requestidlecallback": "^0.3.0",
-    "rollup": "^1.3.2",
+    "rollup": "^1.5.0",
     "rollup-plugin-replace": "^2.1.0",
     "rollup-plugin-terser": "^4.0.4",
     "sapper": "nolanlawson/sapper#for-pinafore-10",
diff --git a/yarn.lock b/yarn.lock
index 146c01e..ddf839e 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -6439,10 +6439,10 @@ rollup-pluginutils@^2.0.1:
     estree-walker "^0.5.2"
     micromatch "^2.3.11"
 
-rollup@^1.3.2:
-  version "1.3.2"
-  resolved "https://registry.yarnpkg.com/rollup/-/rollup-1.3.2.tgz#e23376b8d5d3d87c1cd6310b18fc79c01b8f9353"
-  integrity sha512-xU6L5HqOY0sDeFxMTTs/GoYwcLiuKWfxxFWQTlwsZlQinQh1wfoxtDR4F3E2cHLS81nL9yl8LjZzuOWKd19smg==
+rollup@^1.5.0:
+  version "1.5.0"
+  resolved "https://registry.yarnpkg.com/rollup/-/rollup-1.5.0.tgz#559350d52db3ea7fc750bfbf434276b7198d60af"
+  integrity sha512-xs32mjZhXmUPL+1u300YKFoN/Oqa0VoOkVu/5/bf2n60NpHgoO2L1mevuZg4ltkjrcO2dUfaTvCZzD3BPuAyQQ==
   dependencies:
     "@types/estree" "0.0.39"
     "@types/node" "^11.9.5"