diff --git a/docs/_setup.R b/docs/_setup.R
index 23719f7d72e616250f37e4403ca2eca33b22633f..0f04474eea6952f23e1301322e942d5ee5b28426 100644
--- a/docs/_setup.R
+++ b/docs/_setup.R
@@ -28,6 +28,7 @@ wrapfigure <- function(align = "L", width = "0.5") {
 ##======================================================================
 ## Opções gerais do knitr
 library(knitr)
+library(xtable)
 opts_chunk$set(
     warning = FALSE,
     message = FALSE,