diff --git a/package.json b/package.json
index 6504eb5..3c3e26e 100644
--- a/package.json
+++ b/package.json
@@ -48,7 +48,7 @@
     "babel-preset-es2015": "^6.3.13",
     "benchmark": "^2.0.0",
     "docco": "^0.9.1",
-    "rollup": "^3.2.5",
+    "rollup": "^4.2.0",
     "tape": "^5.0.0"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index d5b8269..8bb9e52 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -16,6 +16,66 @@
   dependencies:
     call-bind "^1.0.2"
 
+"@rollup/rollup-android-arm-eabi@4.2.0":
+  version "4.2.0"
+  resolved "https://registry.yarnpkg.com/@rollup/rollup-android-arm-eabi/-/rollup-android-arm-eabi-4.2.0.tgz#b945a7044afce5de03d03a55aef3503a50d92586"
+  integrity sha512-8PlggAxGxavr+pkCNeV1TM2wTb2o+cUWDg9M1cm9nR27Dsn287uZtSLYXoQqQcmq+sYfF7lHfd3sWJJinH9GmA==
+
+"@rollup/rollup-android-arm64@4.2.0":
+  version "4.2.0"
+  resolved "https://registry.yarnpkg.com/@rollup/rollup-android-arm64/-/rollup-android-arm64-4.2.0.tgz#416abdc076810cde6f84f05b0fc9decd2d7c319f"
+  integrity sha512-+71T85hbMFrJI+zKQULNmSYBeIhru55PYoF/u75MyeN2FcxE4HSPw20319b+FcZ4lWx2Nx/Ql9tN+hoaD3GH/A==
+
+"@rollup/rollup-darwin-arm64@4.2.0":
+  version "4.2.0"
+  resolved "https://registry.yarnpkg.com/@rollup/rollup-darwin-arm64/-/rollup-darwin-arm64-4.2.0.tgz#4c468e8fce7ffa121c8b2067d5f3feb1bbeefec6"
+  integrity sha512-IIIQLuG43QIElT1JZqUP/zqIdiJl4t9U/boa0GZnQTw9m1X0k3mlBuysbgYXeloLT1RozdL7bgw4lpSaI8GOXw==
+
+"@rollup/rollup-darwin-x64@4.2.0":
+  version "4.2.0"
+  resolved "https://registry.yarnpkg.com/@rollup/rollup-darwin-x64/-/rollup-darwin-x64-4.2.0.tgz#3e8dee93e01f60f380a8d3828acf6eb07c356b1b"
+  integrity sha512-BXcXvnLaea1Xz900omrGJhxHFJfH9jZ0CpJuVsbjjhpniJ6qiLXz3xA8Lekaa4MuhFcJd4f0r+Ky1G4VFbYhWw==
+
+"@rollup/rollup-linux-arm-gnueabihf@4.2.0":
+  version "4.2.0"
+  resolved "https://registry.yarnpkg.com/@rollup/rollup-linux-arm-gnueabihf/-/rollup-linux-arm-gnueabihf-4.2.0.tgz#d4913e0d66ca9ae10863c2b81300bd0c79386390"
+  integrity sha512-f4K3MKw9Y4AKi4ANGnmPIglr+S+8tO858YrGVuqAHXxJdVghBmz9CPU9kDpOnGvT4g4vg5uNyIFpOOFvffXyMA==
+
+"@rollup/rollup-linux-arm64-gnu@4.2.0":
+  version "4.2.0"
+  resolved "https://registry.yarnpkg.com/@rollup/rollup-linux-arm64-gnu/-/rollup-linux-arm64-gnu-4.2.0.tgz#811ec171fcf75dfcab59b1a04502c62c8410235e"
+  integrity sha512-bNsTYQBgp4H7w6cT7FZhesxpcUPahsSIy4NgdZjH1ZwEoZHxi4XKglj+CsSEkhsKi+x6toVvMylhjRKhEMYfnA==
+
+"@rollup/rollup-linux-arm64-musl@4.2.0":
+  version "4.2.0"
+  resolved "https://registry.yarnpkg.com/@rollup/rollup-linux-arm64-musl/-/rollup-linux-arm64-musl-4.2.0.tgz#9291c7ec1a3572e9d3f395bcfff388ff173626ca"
+  integrity sha512-Jp1NxBJpGLuxRU2ihrQk4IZ+ia5nffobG6sOFUPW5PMYkF0kQtxEbeDuCa69Xif211vUOcxlOnf5IOEIpTEySA==
+
+"@rollup/rollup-linux-x64-gnu@4.2.0":
+  version "4.2.0"
+  resolved "https://registry.yarnpkg.com/@rollup/rollup-linux-x64-gnu/-/rollup-linux-x64-gnu-4.2.0.tgz#30fb4756ebf5c7e059a12bdf42d900c38041e04d"
+  integrity sha512-3p3iRtQmv2aXw+vtKNyZMLOQ+LSRsqArXjKAh2Oj9cqwfIRe7OXvdkOzWfZOIp1F/x5KJzVAxGxnniF4cMbnsQ==
+
+"@rollup/rollup-linux-x64-musl@4.2.0":
+  version "4.2.0"
+  resolved "https://registry.yarnpkg.com/@rollup/rollup-linux-x64-musl/-/rollup-linux-x64-musl-4.2.0.tgz#e5d4f4529142ba7873071d4661d37eb50e211a45"
+  integrity sha512-atih7IF/reUZe4LBLC5Izd44hth2tfDIG8LaPp4/cQXdHh9jabcZEvIeRPrpDq0i/Uu487Qu5gl5KwyAnWajnw==
+
+"@rollup/rollup-win32-arm64-msvc@4.2.0":
+  version "4.2.0"
+  resolved "https://registry.yarnpkg.com/@rollup/rollup-win32-arm64-msvc/-/rollup-win32-arm64-msvc-4.2.0.tgz#0047005faab99cdea50b594f76388ed09ed44650"
+  integrity sha512-vYxF3tKJeUE4ceYzpNe2p84RXk/fGK30I8frpRfv/MyPStej/mRlojztkN7Jtd1014HHVeq/tYaMBz/3IxkxZw==
+
+"@rollup/rollup-win32-ia32-msvc@4.2.0":
+  version "4.2.0"
+  resolved "https://registry.yarnpkg.com/@rollup/rollup-win32-ia32-msvc/-/rollup-win32-ia32-msvc-4.2.0.tgz#da08f1d2b0a6c58ca59aea026c2ffc5592ee8194"
+  integrity sha512-1LZJ6zpl93SaPQvas618bMFarVwufWTaczH4ESAbFcwiC4OtznA6Ym+hFPyIGaJaGEB8uMWWac0uXGPXOg5FGA==
+
+"@rollup/rollup-win32-x64-msvc@4.2.0":
+  version "4.2.0"
+  resolved "https://registry.yarnpkg.com/@rollup/rollup-win32-x64-msvc/-/rollup-win32-x64-msvc-4.2.0.tgz#c01c43de5a3e786b603b37555961870fa5db2e1c"
+  integrity sha512-dgQfFdHCNg08nM5zBmqxqc9vrm0DVzhWotpavbPa0j4//MAOKZEB75yGAfzQE9fUJ+4pvM1239Y4IhL8f6sSog==
+
 ansi-regex@^2.0.0:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-2.1.1.tgz#c3b33ab5ee360d86e0e628f0468ae7ef27d654df"
@@ -2266,11 +2326,23 @@ ret@~0.1.10:
   resolved "https://registry.yarnpkg.com/ret/-/ret-0.1.15.tgz#b8a4825d5bdb1fc3f6f53c2bc33f81388681c7bc"
   integrity sha512-TTlYpa+OL+vMMNG24xSlQGEJ3B/RzEfUlLct7b5G/ytav+wPrplCpVMFuwzXbkecJrb6IYo1iFb0S9v37754mg==
 
-rollup@^3.2.5:
-  version "3.29.4"
-  resolved "https://registry.yarnpkg.com/rollup/-/rollup-3.29.4.tgz#4d70c0f9834146df8705bfb69a9a19c9e1109981"
-  integrity sha512-oWzmBZwvYrU0iJHtDmhsm662rC15FRXmcjCk1xD771dFDx5jJ02ufAQQTn0etB2emNk4J9EZg/yWKpsn9BWGRw==
+rollup@^4.2.0:
+  version "4.2.0"
+  resolved "https://registry.yarnpkg.com/rollup/-/rollup-4.2.0.tgz#c726e4004ebf1c7f74dc7b7d51d3a34db84e4f95"
+  integrity sha512-deaMa9Z+jPVeBD2dKXv+h7EbdKte9++V2potc/ADqvVgEr6DEJ3ia9u0joarjC2lX/ubaCRYz3QVx0TzuVqAJA==
   optionalDependencies:
+    "@rollup/rollup-android-arm-eabi" "4.2.0"
+    "@rollup/rollup-android-arm64" "4.2.0"
+    "@rollup/rollup-darwin-arm64" "4.2.0"
+    "@rollup/rollup-darwin-x64" "4.2.0"
+    "@rollup/rollup-linux-arm-gnueabihf" "4.2.0"
+    "@rollup/rollup-linux-arm64-gnu" "4.2.0"
+    "@rollup/rollup-linux-arm64-musl" "4.2.0"
+    "@rollup/rollup-linux-x64-gnu" "4.2.0"
+    "@rollup/rollup-linux-x64-musl" "4.2.0"
+    "@rollup/rollup-win32-arm64-msvc" "4.2.0"
+    "@rollup/rollup-win32-ia32-msvc" "4.2.0"
+    "@rollup/rollup-win32-x64-msvc" "4.2.0"
     fsevents "~2.3.2"
 
 safe-array-concat@^1.0.1: