diff --git a/src/types/generate_content.rs b/src/types/generate_content.rs
index e508f60..7d8f1c8 100644
--- a/src/types/generate_content.rs
+++ b/src/types/generate_content.rs
@@ -302,7 +302,7 @@ pub struct SafetyRating {
     pub category: String,
     pub probability: String,
     pub probability_score: Option<f32>,
-    pub severity: String,
+    pub severity: Option<String>,
     pub severity_score: Option<f32>,
 }