Upgrade dependencies

Change-Id: I115f3a7dab27d38a90132c4a316a1c01f4972a3f
diff --git a/Changes b/Changes
index f2dd94e..69c85d5 100644
--- a/Changes
+++ b/Changes
@@ -1,3 +1,6 @@
+0.59.4 2021-07-27
+    - [cleanup] Upgrade dependencies (diewald)
+
 0.59.3 2021-06-28
     - [feature] Added "missing query reference" status code (diewald)
     - [cleanup] Added test coverage checking with