diff --git a/gitlab/conda_build_config.yaml b/gitlab/conda_build_config.yaml
index cba9b9105e7c74e59af6177e7b2b6fa1f4014382..7c7c2453a3fe52215eba84892b6846070e0f5e47 100644
--- a/gitlab/conda_build_config.yaml
+++ b/gitlab/conda_build_config.yaml
@@ -44,7 +44,7 @@ zip_keys:
 # Ideally we want to build and test against older versions of dependencies.
 # Most of the pin numbers come from the anaconda package.
 bob_devel:
-  - 2018.03.31
+  - 2018.04.04
 
 ## The build time only dependencies.
 ## Updaing these to the latest version all the time is OK.