diff --git a/package-lock.json b/package-lock.json
index b8532ca..97789de 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "ulid",
-  "version": "3.0.1",
+  "version": "3.0.2",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "ulid",
-      "version": "3.0.1",
+      "version": "3.0.2",
       "license": "MIT",
       "bin": {
         "ulid": "dist/cli.js"
diff --git a/package.json b/package.json
index b3a5523..94efd41 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ulid",
-  "version": "3.0.1",
+  "version": "3.0.2",
   "description": "A universally-unique, lexicographically-sortable, identifier generator",
   "type": "module",
   "exports": {
@@ -41,6 +41,7 @@
     "build:types": "tsc -p tsconfig.dec.json --emitDeclarationOnly  && find ./dist -name '*.d.ts' -exec sh -c 'cp {} $(dirname {})/$(basename -s .d.ts {}).d.cts' \\;",
     "clean": "rm -rf ./dist",
     "format": "prettier --write \"{{source,test}/**/*.{js,ts},rollup.config.js,vitest.config.js}\"",
+    "prepublishOnly": "npm run build",
     "test": "npm run build && npm run test:specs && npm run test:format && npm run test:types",
     "test:format": "prettier --check \"{{source,test}/**/*.{js,ts},rollup.config.js,vitest.config.js}\"",
     "test:specs": "vitest",
diff --git a/source/ulid.ts b/source/ulid.ts
index 24ebb28..a270724 100644
--- a/source/ulid.ts
+++ b/source/ulid.ts
@@ -52,12 +52,12 @@ export function detectPRNG(root?: any): PRNG {
         return () => {
             const buffer = new Uint8Array(1);
             globalCrypto.getRandomValues(buffer);
-            return buffer[0] / 0xff;
+            return buffer[0] / 256;
         };
     } else if (typeof globalCrypto?.randomBytes === "function") {
-        return () => globalCrypto.randomBytes(1).readUInt8() / 0xff;
+        return () => globalCrypto.randomBytes(1).readUInt8() / 256;
     } else if (crypto?.randomBytes) {
-        return () => crypto.randomBytes(1).readUInt8() / 0xff;
+        return () => crypto.randomBytes(1).readUInt8() / 256;
     }
     throw new ULIDError(ULIDErrorCode.PRNGDetectFailure, "Failed to find a reliable PRNG");
 }