diff --git a/beacon/params/config.go b/beacon/params/config.go
index b01b739e07..5336220efd 100644
--- a/beacon/params/config.go
+++ b/beacon/params/config.go
@@ -38,7 +38,7 @@ import (
 // across signing different data structures.
 const syncCommitteeDomain = 7
 
-var knownForks = []string{"GENESIS", "ALTAIR", "BELLATRIX", "CAPELLA", "DENEB"}
+var knownForks = []string{"GENESIS", "ALTAIR", "BELLATRIX", "CAPELLA", "DENEB", "ELECTRA", "FULU"}
 
 // ClientConfig contains beacon light client configuration.
 type ClientConfig struct {