diff --git a/.travis.yml b/.travis.yml
index b405991321f9c3288f48e071911e38f31b0b2cb1..905c9d97998d48c43e56248f4d2acdfd0730819a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,6 +7,9 @@ r:
 sudo: false
 cache: packages
 
+bioc_packages:
+  - SummarizedExperiment
+
 after_success:
   - Rscript -e 'covr::codecov()'
 
diff --git a/appveyor.yml b/appveyor.yml
index af7524cc373e24ad02a29d1602a955183e0d74e3..dc29760fe7700cd5abb0635164bd227de4a834fb 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -20,6 +20,7 @@ environment:
 
 build_script:
   - travis-tool.sh install_bioc_deps
+  - travis-tool.sh install_bioc scDD
 
 test_script:
   - travis-tool.sh run_tests