diff --git a/rpc/handlers.go b/rpc/handlers.go
index 8967e5be4f..d7f1628072 100644
--- a/rpc/handlers.go
+++ b/rpc/handlers.go
@@ -1655,7 +1655,7 @@ func (h *Handler) callAndLogErr(f func() error, msg string) {
 }
 
 func (h *Handler) SpecVersion() (string, *jsonrpc.Error) {
-	return "0.6.0-rc2", nil
+	return "0.6.0-rc4", nil
 }
 
 func (h *Handler) LegacySpecVersion() (string, *jsonrpc.Error) {
diff --git a/rpc/handlers_test.go b/rpc/handlers_test.go
index c4ac50b147..a8ae06a241 100644
--- a/rpc/handlers_test.go
+++ b/rpc/handlers_test.go
@@ -3629,7 +3629,7 @@ func TestSpecVersion(t *testing.T) {
 	handler := rpc.New(nil, nil, 0, nil, nil, nil, "", nil)
 	version, rpcErr := handler.SpecVersion()
 	require.Nil(t, rpcErr)
-	require.Equal(t, "0.6.0-rc2", version)
+	require.Equal(t, "0.6.0-rc4", version)
 
 	legacyVersion, rpcErr := handler.LegacySpecVersion()
 	require.Nil(t, rpcErr)