diff --git a/cgi-updater-payload.sh b/cgi-updater-payload.sh
index 33ffbbb..b8153ad 100755
--- a/cgi-updater-payload.sh
+++ b/cgi-updater-payload.sh
@@ -26,6 +26,8 @@ EOF
 	apt-key adv --keyserver keyserver.ubuntu.com --recv-keys $key
     apt-get update
     apt-get -y install r-base-dev
+    # Dependencies of RCurl:
+    apt-get -y install libxml2-dev libcurl4-gnutls-dev
 }
 
 python_install_packages() {