diff --git a/defaults/main.yml b/defaults/main.yml
index c0e29b0..6aaed97 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -20,10 +20,10 @@ r_cran_ubuntu_packages_ppa_trusty: 'ppa:marutter/c2d4u'
 r_cran_ubuntu_packages_ppa: 'ppa:c2d4u.team/c2d4u4.0+'
 r_apt_additional_repos_trusty:
   - 'ppa:opencpu/jq'
-r_apt_additional_repos:
-  - 'ppa:cran/v8'
-  - 'ppa:ubuntugis/ppa'
-  - 'ppa:cran/libgit2'
+#r_apt_additional_repos:
+#  - 'ppa:cran/v8'
+#  - 'ppa:ubuntugis/ppa'
+#  - 'ppa:cran/libgit2'
 
 r_cran_set_default_mirror: true
 r_cran_mirror_site: https://cran.mirror.garr.it/mirrors/CRAN/