diff --git a/go.mod b/go.mod
index 8841061..f86d598 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,7 @@ module github.com/attestantio/go-builder-client
 go 1.20
 
 require (
-	github.com/attestantio/go-eth2-client v0.21.10
+	github.com/attestantio/go-eth2-client v0.21.4-0.20240506185515-2ff35ee939f2
 	github.com/ferranbt/fastssz v0.1.3
 	// go-yaml after 1.9.2 has memory issues due to https://github.com/goccy/go-yaml/issues/325; avoid.
 	github.com/goccy/go-yaml v1.11.3
@@ -47,5 +47,3 @@ require (
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
-
-replace github.com/attestantio/go-eth2-client => ../go-eth2-client
diff --git a/go.sum b/go.sum
index b281137..1655d8d 100644
--- a/go.sum
+++ b/go.sum
@@ -1,3 +1,5 @@
+github.com/attestantio/go-eth2-client v0.21.4-0.20240506185515-2ff35ee939f2 h1:zqs9KZ+QbCLw2R/CCdlNXd+bBYsgoNuw3ZNrz7MbyKw=
+github.com/attestantio/go-eth2-client v0.21.4-0.20240506185515-2ff35ee939f2/go.mod h1:vhb0ZoQ6bz0kkoyxVbHDRrZTOJbwlY6udFkwfwrJZTE=
 github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
 github.com/cespare/xxhash/v2 v2.2.0 h1:DC2CZ1Ep5Y4k3ZQ899DldepgrayRUGE6BBZ/cd9Cj44=