diff --git a/async-openai/src/types/chat.rs b/async-openai/src/types/chat.rs
index 78daa9fc..68c93e19 100644
--- a/async-openai/src/types/chat.rs
+++ b/async-openai/src/types/chat.rs
@@ -11,9 +11,9 @@ use crate::error::OpenAIError;
 pub enum Prompt {
     String(String),
     StringArray(Vec<String>),
-    // Minimum value is 0, maximum value is 50256 (inclusive).
-    IntegerArray(Vec<u16>),
-    ArrayOfIntegerArray(Vec<Vec<u16>>),
+    // Minimum value is 0, maximum value is 4_294_967_295 (inclusive).
+    IntegerArray(Vec<u32>),
+    ArrayOfIntegerArray(Vec<Vec<u32>>),
 }
 
 #[derive(Debug, Serialize, Deserialize, Clone, PartialEq)]
diff --git a/async-openai/src/types/impls.rs b/async-openai/src/types/impls.rs
index b683f833..8646e8f9 100644
--- a/async-openai/src/types/impls.rs
+++ b/async-openai/src/types/impls.rs
@@ -372,7 +372,7 @@ macro_rules! impl_from_for_integer_array {
 }
 
 impl_from_for_integer_array!(u32, EmbeddingInput);
-impl_from_for_integer_array!(u16, Prompt);
+impl_from_for_integer_array!(u32, Prompt);
 
 macro_rules! impl_from_for_array_of_integer_array {
     ($from_typ:ty, $to_typ:ty) => {
@@ -469,7 +469,7 @@ macro_rules! impl_from_for_array_of_integer_array {
 }
 
 impl_from_for_array_of_integer_array!(u32, EmbeddingInput);
-impl_from_for_array_of_integer_array!(u16, Prompt);
+impl_from_for_array_of_integer_array!(u32, Prompt);
 
 impl From<&str> for ChatCompletionFunctionCall {
     fn from(value: &str) -> Self {