diff --git a/.changeset/shy-shoes-shave.md b/.changeset/shy-shoes-shave.md
new file mode 100644
index 00000000..a599ec97
--- /dev/null
+++ b/.changeset/shy-shoes-shave.md
@@ -0,0 +1,5 @@
+---
+"@traversable/zod-test": patch
+---
+
+fix(zod-test): fixes type-level bug where `SeedGenerator` was returning type `fc.Arbitrary<unknown>` (#557)
diff --git a/packages/zod-test/src/exports.ts b/packages/zod-test/src/exports.ts
index de2e13a0..db7af23d 100644
--- a/packages/zod-test/src/exports.ts
+++ b/packages/zod-test/src/exports.ts
@@ -6,7 +6,9 @@ export * as Seed from './generator-seed.js'
 
 export { fuzz } from './fuzz.js'
 export type { Config } from './generator-options.js'
+export type * as Bounds from './generator-bounds.js'
 export {
+  SeedMap,
   SchemaGenerator,
   SeedGenerator,
   SeedInvalidDataGenerator,
diff --git a/packages/zod-test/src/generator.ts b/packages/zod-test/src/generator.ts
index 1ee7aa65..a07b1120 100644
--- a/packages/zod-test/src/generator.ts
+++ b/packages/zod-test/src/generator.ts
@@ -136,7 +136,7 @@ const UnaryMap = {
   map: (tie) => fc.tuple(fc.constant(byTag.map), fc.tuple(tie('*'), tie('*'))),
   pipe: (tie) => fc.tuple(fc.constant(byTag.pipe), fc.tuple(tie('*'), tie('*'))),
   transform: (tie) => fc.tuple(fc.constant(byTag.transform), tie('*')),
-  promise: () => PromiseSchemaIsUnsupported('SeedMap'),
+  promise: (tie) => fc.tuple(fc.constant(byTag.promise), tie('*')),
 } satisfies { [K in keyof Seed.UnaryMap<never>]: SeedBuilder<K> }
 
 const TerminalSeeds = fn.map(Object_keys(TerminalMap), (tag) => byTag[tag])
@@ -657,7 +657,7 @@ const seedsThatPreventGeneratingInvalidData = [
  * const ZodSchema = zxTest.seedToSchema(seed)
  * const dataset = fc.sample(zxTest.seedToValidData(seed), 5)
  * 
- * const results = dataset.map((pt) => ZodSchema.safeParse(pt).success)
+ * const results = dataset.map((data) => ZodSchema.safeParse(data).success)
  * 
  * console.log(results) // => [true, true, true, true, true]
  */
@@ -692,7 +692,7 @@ export const SeedValidDataGenerator = SeedGenerator({ exclude: seedsThatPreventG
  * const ZodSchema = zxTest.seedToSchema(seed)
  * const dataset = fc.sample(zxTest.seedToInvalidData(seed), 5)
  * 
- * const results = dataset.map((pt) => ZodSchema.safeParse(pt).success)
+ * const results = dataset.map((data) => ZodSchema.safeParse(data).success)
  * 
  * console.log(results) // => [false, false, false, false, false]
  */
diff --git a/packages/zod-test/test/generator.test.ts b/packages/zod-test/test/generator.test.ts
index 548884f2..d7c4feb6 100644
--- a/packages/zod-test/test/generator.test.ts
+++ b/packages/zod-test/test/generator.test.ts
@@ -139,3 +139,52 @@ vi.describe('〖️⛳️〗‹‹‹ ❲@traversable/zod-test❳', () => {
     `)
   })
 })
+
+vi.describe('〖️⛳️〗‹‹‹ ❲@traversable/zod-test❳: type-level tests', () => {
+  vi.test('〖️⛳️〗› ❲zxTest.SeedGenerator❳: Builder["*"] return type', () => {
+    vi.expectTypeOf(zxTest.SeedGenerator()['*']).toEqualTypeOf<
+      fc.Arbitrary<
+        | [10]
+        | [15]
+        | [20]
+        | [25]
+        | [30]
+        | [35]
+        | [40]
+        | [45]
+        | [50]
+        | [55]
+        | [60]
+        | [100, zxTest.Bounds.int]
+        | [150, zxTest.Bounds.bigint]
+        | [200, zxTest.Bounds.number]
+        | [250, zxTest.Bounds.string]
+        | [500, any]
+        | [550, string | number | bigint | boolean]
+        | zxTest.Seed.Seed.TemplateLiteral
+        | [1000, unknown, zxTest.Bounds.array]
+        | [1500, unknown]
+        | [2000, unknown]
+        | [2500, unknown]
+        | [3000, unknown]
+        | [3500, unknown]
+        | [4000, unknown]
+        | [5000, unknown]
+        | [5500, unknown]
+        | [5600, unknown]
+        | [6000, [[7500, [string, unknown][]], [7500, [string, unknown][]]]]
+        | [6500, [unknown, unknown]]
+        | [7000, unknown]
+        | [7500, [string, unknown][]]
+        | [8000, unknown[]]
+        | [8500, unknown[]]
+        | [9000, [unknown, unknown]]
+        | [9500, unknown]
+        | [10000, unknown]
+        | [10500, () => unknown]
+        | [100000, unknown]
+      >
+    >()
+  })
+})
+