diff --git a/CHANGELOG.md b/CHANGELOG.md
index 99581835..6de0837f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,20 @@
 # Changelog
 
+## [v3.1.0] - 2019-10-07
+
+### Added:
+- **[dnsprovider]** Add DNS provider for Liquid Web
+- **[dnsprovider]** cloudflare: add support for API tokens
+- **[cli]** feat: ease operation behind proxy servers
+
+### Changed:
+- **[dnsprovider]** cloudflare: update client
+- **[dnsprovider]** linodev4: propagation timeout configuration.
+
+### Fixed:
+- **[dnsprovider]** ovh: fix int overflow.
+- **[dnsprovider]** bindman: fix client version.
+
 ## [v3.0.2] - 2019-08-15
 
 ### Fixed:
diff --git a/acme/api/internal/sender/useragent.go b/acme/api/internal/sender/useragent.go
index 4fddd72e..9554802d 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/3.0.2"
+	ourUserAgent = "xenolf-acme/3.1.0"
 
 	// 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"
 )