Need to specify repos

Author: hadley

.travis.yml

@@ -16,7 +16,7 @@ after_success:
   - Rscript -e 'covr::codecov()'
 
 before_deploy:
-  - R -e "install.packages('roxygen2')"
+  - R -e "install.packages('roxygen2', repos = 'http://cran.rstudio.com')"
   - R -e "staticdocs::build_site(examples = TRUE)"
 
 deploy: