diff --git a/tools/travis_script.sh b/tools/travis_script.sh
index 30777285..8dc2bb4e 100755
--- a/tools/travis_script.sh
+++ b/tools/travis_script.sh
@@ -67,8 +67,6 @@ fi
 
 retry pip install -q tifffile
 
-pip install 'dask[array]>=0.5.0'
-
 section_end "Install.optional.dependencies"