diff --git a/package.json b/package.json
index 52e2459..ded6859 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,7 @@
     "superdough": "^0.9.3",
     "tailwindcss": "^3.3.3",
     "tone": "^14.8.49",
-    "zifferjs": "^0.0.2",
+    "zifferjs": "^0.0.4",
     "zzfx": "^1.2.0"
   }
 }
diff --git a/src/API.ts b/src/API.ts
index 44190cc..edaf30a 100644
--- a/src/API.ts
+++ b/src/API.ts
@@ -1,4 +1,4 @@
-import { Pitch, Chord, Rest, Event, Start, cachedStart, pattern } from "zifferjs";
+import { Pitch, Chord, Rest, Event, cachedEvent } from "zifferjs";
 import { MidiConnection } from "./IO/MidiConnection";
 import { tryEvaluate } from "./Evaluator";
 import { DrunkWalk } from "./Utils/Drunk";
diff --git a/tsconfig.json b/tsconfig.json
index 63c2639..a42f12d 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -8,6 +8,7 @@
 
     /* Bundler mode */
     "moduleResolution": "bundler",
+    "esModuleInterop": true,
     "allowImportingTsExtensions": true,
     "resolveJsonModule": true,
     "isolatedModules": true,
diff --git a/yarn.lock b/yarn.lock
index f196faa..cbc32f2 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -993,11 +993,6 @@ run-parallel@^1.1.9:
   dependencies:
     queue-microtask "^1.2.2"
 
-seedrandom@^3.0.5:
-  version "3.0.5"
-  resolved "https://registry.yarnpkg.com/seedrandom/-/seedrandom-3.0.5.tgz#54edc85c95222525b0c7a6f6b3543d8e0b3aa0a7"
-  integrity sha512-8OwmbklUNzwezjGInmZ+2clQmExQPvomqjL7LFqOYqtmuxRgQYqOD3mHaU+MvZn5FLUeVxVfQjwLZW/n/JFuqg==
-
 source-map-js@^1.0.2:
   version "1.0.2"
   resolved "https://registry.npmjs.org/source-map-js/-/source-map-js-1.0.2.tgz"
@@ -1153,13 +1148,12 @@ yaml@^2.1.1:
   resolved "https://registry.npmjs.org/yaml/-/yaml-2.3.1.tgz"
   integrity sha512-2eHWfjaoXgTBC2jNM1LRef62VQa0umtvRiDSk6HSzW7RvS5YtkabJrwYLLEKWBc8a5U2PTSCs+dJjUTJdlHsWQ==
 
-zifferjs@^0.0.2:
-  version "0.0.2"
-  resolved "https://registry.yarnpkg.com/zifferjs/-/zifferjs-0.0.2.tgz#17abcba0874da603908baefd00bee764300e5cb9"
-  integrity sha512-NQ9JxMDA5dBQF6kiTFJxDQKxpFn5qklDLu6ow/53V+E8RVEbpSsYcSBhcJ893u5Re4vSooJDJOcMsQwcF4GYww==
+zifferjs@^0.0.4:
+  version "0.0.4"
+  resolved "https://registry.yarnpkg.com/zifferjs/-/zifferjs-0.0.4.tgz#e6a2055bca9b60a22db9ac88a2bce777ce08945a"
+  integrity sha512-p+i8y4Edq8V1tp9+eEtUvCcNTQQfLHjiMrDAB9NS/62c3bPi0eZ5VujHLmNdTwjK8ZT5nzElLRq7hA5C7YRplQ==
   dependencies:
     lru-cache "^10.0.0"
-    seedrandom "^3.0.5"
 
 zzfx@^1.2.0:
   version "1.2.0"