diff --git a/.travis.yml b/.travis.yml
index 905c9d97998d48c43e56248f4d2acdfd0730819a..6d0110d0aa50e79896f560d4ddc7b223751a7941 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,6 +9,10 @@ cache: packages
 
 bioc_packages:
   - SummarizedExperiment
+  - scran
+
+r_packages:
+  - testthat
 
 after_success:
   - Rscript -e 'covr::codecov()'
diff --git a/appveyor.yml b/appveyor.yml
index 603370a3d5825656436fd8e72db4e6a548ae53b3..80380b3d30276a975c05e2c999d8567566087a99 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -16,7 +16,7 @@ environment:
     matrix:
     - R_VERSION: devel
     - R_VERSION: release
-    - R_VERSION: oldrel
+    - R_VERSION: 3.4.0
 
 build_script:
   - travis-tool.sh install_bioc_deps