diff --git a/src/Internal/functions.php b/src/Internal/functions.php
index d3ac97e..7ba2011 100644
--- a/src/Internal/functions.php
+++ b/src/Internal/functions.php
@@ -107,12 +107,12 @@ function cast(mixed $value): string|int|float|null
         "object" => match (true) {
             $value instanceof \BackedEnum => $value->value,
             $value instanceof \Stringable => (string) $value,
-            default => throw new \ValueError(
+            default => throw new \TypeError(
                 "An object in parameter values must be a BackedEnum or implement Stringable; got instance of "
                 . \get_debug_type($value)
             ),
         },
-        default => throw new \ValueError(\sprintf(
+        default => throw new \TypeError(\sprintf(
             "Invalid value type '%s' in parameter values",
             \get_debug_type($value),
         )),
@@ -132,7 +132,7 @@ function encodeArrayItem(mixed $value): mixed
         "object" => match (true) {
             $value instanceof \BackedEnum => encodeArrayItem($value->value),
             $value instanceof \Stringable => encodeArrayItem((string) $value),
-            default => throw new \ValueError(
+            default => throw new \TypeError(
                 "An object in parameter arrays must be a BackedEnum or implement Stringable; "
                 . "got instance of " . \get_debug_type($value)
             ),
diff --git a/test/CastTest.php b/test/CastTest.php
index dca1d0a..3a77ba2 100644
--- a/test/CastTest.php
+++ b/test/CastTest.php
@@ -117,7 +117,7 @@ public function testBackedEnumInArray(): void
 
     public function testUnitEnum(): void
     {
-        $this->expectException(\ValueError::class);
+        $this->expectException(\TypeError::class);
         $this->expectExceptionMessage('An object in parameter values must be');
 
         cast(UnitEnum::Case);
@@ -125,7 +125,7 @@ public function testUnitEnum(): void
 
     public function testUnitEnumInArray(): void
     {
-        $this->expectException(\ValueError::class);
+        $this->expectException(\TypeError::class);
         $this->expectExceptionMessage('An object in parameter arrays must be');
 
         cast([UnitEnum::Case]);
@@ -133,7 +133,7 @@ public function testUnitEnumInArray(): void
 
     public function testObjectWithoutToStringMethod(): void
     {
-        $this->expectException(\ValueError::class);
+        $this->expectException(\TypeError::class);
         $this->expectExceptionMessage('An object in parameter values must be');
 
         cast(new \stdClass);
@@ -141,7 +141,7 @@ public function testObjectWithoutToStringMethod(): void
 
     public function testObjectWithoutToStringMethodInArray(): void
     {
-        $this->expectException(\ValueError::class);
+        $this->expectException(\TypeError::class);
         $this->expectExceptionMessage('An object in parameter arrays must be');
 
         cast([new \stdClass]);