diff --git a/.travis.yml b/.travis.yml
index 506c3d7..3766eef 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,7 +10,9 @@ addons:
   apt:
     packages:
       - libudunits2-dev
-
+      - gdal-bin
+      - libgdal1-dev
+      - libproj-dev
 notifications:
   email:
     on_success: change
diff --git a/cran-comments.md b/cran-comments.md
index e142b3c..42ab60f 100644
--- a/cran-comments.md
+++ b/cran-comments.md
@@ -1,8 +1,8 @@
 ## Test environments
 
-* macOS Catalina, R version 3.6.1
-* Ubuntu 14.04.5 LTS (on travis-ci.org), R 3.5.2
-* win-builder (release), R 3.5.2
+* macOS Catalina, R 3.6.1
+* Ubuntu 16.04.6 LTS, R 4.0.0 (travis-ci.org)
+* x86_64-w64-mingw32, R 4.0.2 (win-builder)
  
 ## devtools::check() results