diff --git a/.travis.yml b/.travis.yml
index 1f3565d..dc11540 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -12,6 +12,7 @@ addons:
       - texlive
       - texlive-latex-extra
       - tex4ht
+      - latexmk
 
 install:
   - git clone --depth=1 git://git.savannah.gnu.org/gnulib.git
diff --git a/doc/Makefile.am b/doc/Makefile.am
index 6c72ee8..5c27b5e 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -8,7 +8,7 @@ htmldir                 = $(pkgdatadir)/html
 dist_html_DATA          = petidomo.html petidomo.css
 
 petidomo.html:	$(srcdir)/petidomo.tex
-	latex $<
+	latexmk $<
 	htlatex $<
 
 petidomo.css:	petidomo.html