diff --git a/ci_scripts/install.sh b/ci_scripts/install.sh
index 09ddd299..36386644 100644
--- a/ci_scripts/install.sh
+++ b/ci_scripts/install.sh
@@ -25,7 +25,7 @@ popd
 # Configure the conda environment and put it in the path using the
 # provided versions
 conda create -n testenv --yes python=$PYTHON_VERSION pip nose \
-      numpy=$NUMPY_VERSION scipy=$SCIPY_VERSION cython=$CYTHON_VERSION scikit-learn matplotlib pandas networkx
+      numpy=$NUMPY_VERSION scipy=$SCIPY_VERSION cython=$CYTHON_VERSION scikit-learn joblib matplotlib pandas networkx
 
 source activate testenv