diff --git a/FirebaseVertexAI/CHANGELOG.md b/FirebaseVertexAI/CHANGELOG.md
index d2124534e10..e744ff5c2b7 100644
--- a/FirebaseVertexAI/CHANGELOG.md
+++ b/FirebaseVertexAI/CHANGELOG.md
@@ -2,6 +2,8 @@
 - [changed] **Breaking Change**: The `HarmCategory` enum is no longer nested
   inside the `SafetySetting` struct and the `unspecified` case has been
   removed. (#13686)
+- [changed] **Breaking Change**: The `BlockThreshold` enum in `SafetySetting`
+  has been renamed to `HarmBlockThreshold`. (#13696)
 
 # 11.3.0
 - [added] Added `Decodable` conformance for `FunctionResponse`. (#13606)
diff --git a/FirebaseVertexAI/Sources/Safety.swift b/FirebaseVertexAI/Sources/Safety.swift
index 244532b3ac7..3fa99626198 100644
--- a/FirebaseVertexAI/Sources/Safety.swift
+++ b/FirebaseVertexAI/Sources/Safety.swift
@@ -67,7 +67,7 @@ public struct SafetyRating: Equatable, Hashable, Sendable {
 @available(iOS 15.0, macOS 11.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 public struct SafetySetting {
   /// Block at and beyond a specified ``SafetyRating/HarmProbability``.
-  public enum BlockThreshold: String, Sendable {
+  public enum HarmBlockThreshold: String, Sendable {
     // Content with `.negligible` will be allowed.
     case blockLowAndAbove = "BLOCK_LOW_AND_ABOVE"
 
@@ -90,10 +90,10 @@ public struct SafetySetting {
   public let harmCategory: HarmCategory
 
   /// The threshold describing what content should be blocked.
-  public let threshold: BlockThreshold
+  public let threshold: HarmBlockThreshold
 
   /// Initializes a new safety setting with the given category and threshold.
-  public init(harmCategory: HarmCategory, threshold: BlockThreshold) {
+  public init(harmCategory: HarmCategory, threshold: HarmBlockThreshold) {
     self.harmCategory = harmCategory
     self.threshold = threshold
   }
@@ -153,7 +153,7 @@ extension HarmCategory: Codable {
 }
 
 @available(iOS 15.0, macOS 11.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
-extension SafetySetting.BlockThreshold: Encodable {}
+extension SafetySetting.HarmBlockThreshold: Encodable {}
 
 @available(iOS 15.0, macOS 11.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
 extension SafetySetting: Encodable {}