--- a/tool_dependencies.xml	Tue May 09 10:41:56 2017 -0400
+++ b/tool_dependencies.xml	Wed May 10 05:48:08 2017 -0400
@@ -98,7 +98,8 @@
                     <package>https://cran.r-project.org/src/contrib/Archive/formatR/formatR_1.0.tar.gz</package>
                     <package>https://cran.r-project.org/src/contrib/Archive/highr/highr_0.4.tar.gz</package>
                     <package>https://cran.r-project.org/src/contrib/Archive/markdown/markdown_0.6.5.tar.gz</package>
-                    <package>https://cran.r-project.org/src/contrib/Archive/knitr/knitr_1.8.tar.gz</package>
+                    <package>https://cran.r-project.org/src/contrib/Archive/
+                      /knitr_1.8.tar.gz</package>
                     <package>https://cran.r-project.org/src/contrib/Archive/httpuv/httpuv_1.2.2.tar.gz</package>
                     <package>https://cran.r-project.org/src/contrib/Archive/shiny/shiny_0.10.2.tar.gz</package>
                     <package>https://cran.rstudio.com/src/contrib/ellipse_0.3-8.tar.gz</package>
@@ -125,6 +126,7 @@
                     <package>https://cran.r-project.org/src/contrib/png_0.1-7.tar.gz</package>
                     <package>https://cran.rstudio.com/src/contrib/igraph_1.0.1.tar.gz</package>
                     <package>https://cran.r-project.org/src/contrib/whisker_0.3-2.tar.gz</package>
+                    <package>ftp://ftp.x.org/pub/X11R7.7/src/lib/libX11-1.5.0.tar.bz2</package>
                     <package>https://cran.r-project.org/src/contrib/Archive/rstudioapi/rstudioapi_0.2.tar.gz</package>
                     <package>https://cran.r-project.org/src/contrib/Archive/devtools/devtools_1.6.tar.gz</package>
                     <package>https://cran.r-project.org/src/contrib/Archive/rgl/rgl_0.95.1201.tar.gz</package>