diff --git a/CHANGELOG b/CHANGELOG
index a25edfb..206289b 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,5 +1,9 @@
 # Changelog
 
+### Unreleased
+
+- Add `trust_level` attribute to `Attribute`
+
 ### 0.0.15
 
 - Updates dependencies
diff --git a/src/attribute.rs b/src/attribute.rs
index 00d24fb..ef752b8 100644
--- a/src/attribute.rs
+++ b/src/attribute.rs
@@ -71,6 +71,8 @@ pub struct Attribute {
     pub name_format: Option<String>,
     #[serde(rename = "AttributeValue", default)]
     pub values: Vec<AttributeValue>,
+    #[serde(rename = "@TrustLevel")]
+    pub trust_level: Option<String>,
 }
 
 impl Attribute {
diff --git a/src/idp/response_builder.rs b/src/idp/response_builder.rs
index c5ac56e..0f7348f 100644
--- a/src/idp/response_builder.rs
+++ b/src/idp/response_builder.rs
@@ -52,6 +52,7 @@ fn build_attributes(formats_names_values: &[ResponseAttribute]) -> Vec<Attribute
                 attribute_type: Some("xs:string".to_string()),
                 value: Some(attr.value.to_string()),
             }],
+            trust_level: None,
         })
         .collect()
 }