diff --git a/CHANGELOG.md b/CHANGELOG.md
index 97e7330e..c975b698 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+0.21.4:
+  - additional nil checks
+  - allow non-mainnet configurations
+
 0.21.3:
   - relax requirement for proposals to use the graffiti we request
 
diff --git a/http/http.go b/http/http.go
index 2a11769b..d1259c12 100644
--- a/http/http.go
+++ b/http/http.go
@@ -34,7 +34,7 @@ import (
 )
 
 // defaultUserAgent is sent with requests if no other user agent has been supplied.
-const defaultUserAgent = "go-eth2-client/0.21.3"
+const defaultUserAgent = "go-eth2-client/0.21.4"
 
 // post sends an HTTP post request and returns the body.
 func (s *Service) post(ctx context.Context, endpoint string, body io.Reader) (io.Reader, error) {