diff --git a/acme/api/internal/sender/useragent.go b/acme/api/internal/sender/useragent.go
index 451419ae..acb01f7b 100644
--- a/acme/api/internal/sender/useragent.go
+++ b/acme/api/internal/sender/useragent.go
@@ -10,5 +10,5 @@ const (
 	// 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 = "release"
+	ourUserAgentComment = "detach"
 )