diff --git a/CHANGELOG.md b/CHANGELOG.md
index e00671036..d7032e466 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Change Log
 
+## [v1.7.31](https://github.com/traefik/traefik/tree/v1.7.31) (2021-10-04)
+[All Commits](https://github.com/traefik/traefik/compare/v1.7.30...v1.7.31)
+
+**Bug fixes:**
+- **[acme,k8s]** acme: add support of preferredchain in Traefik v1 ([#8482](https://github.com/traefik/traefik/pull/8482) by [ldez](https://github.com/ldez))
+
 ## [v1.7.30](https://github.com/traefik/traefik/tree/v1.7.30) (2021-04-07)
 [All Commits](https://github.com/traefik/traefik/compare/v1.7.29...v1.7.30)
 
diff --git a/script/gcg/traefik-bugfix.toml b/script/gcg/traefik-bugfix.toml
index 4bff3aa44..d2b6c8919 100644
--- a/script/gcg/traefik-bugfix.toml
+++ b/script/gcg/traefik-bugfix.toml
@@ -4,11 +4,11 @@ RepositoryName = "traefik"
 OutputType = "file"
 FileName = "traefik_changelog.md"
 
-# example new bugfix v1.7.30
+# example new bugfix v1.7.31
 CurrentRef = "v1.7"
-PreviousRef = "v1.7.29"
+PreviousRef = "v1.7.30"
 BaseBranch = "v1.7"
-FutureCurrentRefName = "v1.7.30"
+FutureCurrentRefName = "v1.7.31"
 
 ThresholdPreviousRef = 10
 ThresholdCurrentRef = 10