diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1e39f52b..db08c4e0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,8 @@
 ## 1.13.1 (Unreleased)
+
+IMPROVEMENTS:
+* compute: Accept subnetwork name only in `google_forwarding_rule` [GH-1552]
+
 ## 1.13.0 (May 24, 2018)
 
 BACKWARDS INCOMPATIBILITIES / NOTES: