diff --git a/Sources/WebSocketKit/WebSocket.swift b/Sources/WebSocketKit/WebSocket.swift
index 3e6f679c..6ab6b6fd 100644
--- a/Sources/WebSocketKit/WebSocket.swift
+++ b/Sources/WebSocketKit/WebSocket.swift
@@ -186,7 +186,9 @@ public final class WebSocket {
     func makeMaskKey() -> WebSocketMaskingKey? {
         switch type {
         case .client:
-            return WebSocketMaskingKey.random()
+            /// See https://github.com/apple/swift/issues/66099
+            var generator = SystemRandomNumberGenerator()
+            return WebSocketMaskingKey.random(using: &generator)
         case .server:
             return nil
         }