diff --git a/example/index.ts b/example/index.ts
index dee703c..dfde052 100644
--- a/example/index.ts
+++ b/example/index.ts
@@ -15,4 +15,4 @@ const T = Type.Object({
 
 type T = Static<typeof T>
 
-console.log(T)
\ No newline at end of file
+console.log(T)
diff --git a/package.json b/package.json
index 31deeff..834e2b7 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@sinclair/typebox",
-  "version": "0.25.11",
+  "version": "0.25.12",
   "description": "JSONSchema Type Builder with Static Type Resolution for TypeScript",
   "keywords": [
     "typescript",
diff --git a/src/hash/hash.ts b/src/hash/hash.ts
index f1955cd..3d0ac21 100644
--- a/src/hash/hash.ts
+++ b/src/hash/hash.ts
@@ -49,8 +49,8 @@ export namespace ValueHash {
   // State
   // ----------------------------------------------------
 
-  let Hash = 14695981039346656037n
-  const [Prime, Size] = [1099511628211n, 2n ** 64n]
+  let Hash = globalThis.BigInt('14695981039346656037')
+  const [Prime, Size] = [globalThis.BigInt('1099511628211'), globalThis.BigInt('2') ** globalThis.BigInt('64')]
   const Bytes = globalThis.Array.from({ length: 256 }).map((_, i) => globalThis.BigInt(i))
   const F64 = new globalThis.Float64Array(1)
   const F64In = new globalThis.DataView(F64.buffer)
@@ -186,7 +186,7 @@ export namespace ValueHash {
 
   /** Creates a FNV1A-64 non cryptographic hash of the given value */
   export function Create(value: unknown) {
-    Hash = 14695981039346656037n
+    Hash = globalThis.BigInt('14695981039346656037')
     Visit(value)
     return Hash
   }
diff --git a/src/value/cast.ts b/src/value/cast.ts
index 17d72e3..5abe5f6 100644
--- a/src/value/cast.ts
+++ b/src/value/cast.ts
@@ -146,11 +146,11 @@ export namespace ValueCast {
   }
 
   function IsValueTrue(value: unknown): value is true {
-    return value === true || (IsNumber(value) && value === 1) || (IsBigInt(value) && value === 1n) || (IsString(value) && (value.toLowerCase() === 'true' || value === '1'))
+    return value === true || (IsNumber(value) && value === 1) || (IsBigInt(value) && value === globalThis.BigInt('1')) || (IsString(value) && (value.toLowerCase() === 'true' || value === '1'))
   }
 
   function IsValueFalse(value: unknown): value is true {
-    return value === false || (IsNumber(value) && value === 0) || (IsBigInt(value) && value === 0n) || (IsString(value) && (value.toLowerCase() === 'false' || value === '0'))
+    return value === false || (IsNumber(value) && value === 0) || (IsBigInt(value) && value === globalThis.BigInt('0')) || (IsString(value) && (value.toLowerCase() === 'false' || value === '0'))
   }
 
   // ----------------------------------------------------------------------------------------------