diff --git a/CHANGELOG.md b/CHANGELOG.md
index d4ba74c5..0c1366a5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## [v4.0.1] - 2020-09-03
+
+### Fixed:
+
+- **[dnsprovider]** exoscale: change dependency version.
+
 ## [v4.0.0] - 2020-09-02
 
 ### Added:
diff --git a/acme/api/internal/sender/useragent.go b/acme/api/internal/sender/useragent.go
index c971fe0e..0f1e0be4 100644
--- a/acme/api/internal/sender/useragent.go
+++ b/acme/api/internal/sender/useragent.go
@@ -5,10 +5,10 @@ package sender
 
 const (
 	// ourUserAgent is the User-Agent of this underlying library package.
-	ourUserAgent = "xenolf-acme/4.0.0"
+	ourUserAgent = "xenolf-acme/4.0.1"
 
 	// ourUserAgentComment is part of the UA comment linked to the version status of this underlying library package.
 	// values: detach|release
 	// NOTE: Update this with each tagged release.
-	ourUserAgentComment = "detach"
+	ourUserAgentComment = "release"
 )