Release v1.6.1 (#329)

diff --git a/CHANGELOG b/CHANGELOG
index 3a754d1..5309451 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,10 @@
+v1.6.1
+  Version 1.6.1
+
+  Bugfix release
+
+  - Fixed a bug where using google-auth with scoped credentials would fail. (#328)
+
 v1.6.0
   Version 1.6.0