diff --git a/gitlab/conda_build_config.yaml b/gitlab/conda_build_config.yaml
index 4256e1e5ed63761702bef4730812e1d3e9237b98..ae9704a77edebe2f3cd635f8f64918875f387cce 100644
--- a/gitlab/conda_build_config.yaml
+++ b/gitlab/conda_build_config.yaml
@@ -122,6 +122,8 @@ matplotlib:
   - 2.1.0
 nose:
   - 1.3.7
+pillow:
+  - 4.2.1
 scipy:
   - 0.19
 setuptools: