diff --git a/Cargo.lock b/Cargo.lock
index aa41388..b94511e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -195,7 +195,7 @@ checksum = "078775d0255232fb988e6fccf26ddc9d1ac274299aaedcedce21c6f72cc533ce"
 
 [[package]]
 name = "wasmer-interface-types-fl"
-version = "0.17.3"
+version = "0.17.4"
 dependencies = [
  "log",
  "nom",
diff --git a/Cargo.toml b/Cargo.toml
index 0b14141..2deb218 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasmer-interface-types-fl"
-version = "0.17.3"
+version = "0.17.4"
 description = "WebAssembly Interface Types library for Wasmer"
 license = "MIT"
 authors = ["The Wasmer Engineering Team <engineering@wasmer.io>"]
diff --git a/src/types.rs b/src/types.rs
index 6317487..b7706ed 100644
--- a/src/types.rs
+++ b/src/types.rs
@@ -4,7 +4,7 @@ use crate::vec1::Vec1;
 use serde::{Deserialize, Serialize};
 
 /// Represents the types supported by WIT.
-#[derive(PartialEq, Eq, Debug, Clone, Serialize, Deserialize)]
+#[derive(PartialEq, Eq, Debug, Clone, Hash, Serialize, Deserialize)]
 pub enum InterfaceType {
     /// A 8-bits signed integer.
     S8,
@@ -57,7 +57,7 @@ pub enum InterfaceType {
 }
 
 /// Represents a record field type.
-#[derive(PartialEq, Eq, Debug, Clone, Serialize, Deserialize)]
+#[derive(PartialEq, Eq, Debug, Clone, Hash, Serialize, Deserialize)]
 pub struct RecordFieldType {
     // TODO: make name optional to support structures with anonymous fields in Rust
     /// A field name.
@@ -68,7 +68,7 @@ pub struct RecordFieldType {
 }
 
 /// Represents a record type.
-#[derive(PartialEq, Debug, Clone, Serialize, Deserialize)]
+#[derive(PartialEq, Eq, Debug, Clone, Hash, Serialize, Deserialize)]
 pub struct RecordType {
     /// A record name.
     pub name: String,
diff --git a/src/vec1.rs b/src/vec1.rs
index d7d0aa9..360a3e3 100644
--- a/src/vec1.rs
+++ b/src/vec1.rs
@@ -9,7 +9,7 @@ use std::{
 
 /// `Vec1<T>` represents a non-empty `Vec<T>`. It derefs to `Vec<T>`
 /// directly.
-#[derive(Clone, PartialEq, Serialize, Deserialize, Default)]
+#[derive(Clone, PartialEq, Eq, Serialize, Hash, Deserialize, Default)]
 pub struct Vec1<T>(Vec<T>)
 where
     T: Debug;