diff --git a/.buildkite/pipeline.yml b/.buildkite/pipeline.yml
index 4f5c35641..dfa94fc4e 100644
--- a/.buildkite/pipeline.yml
+++ b/.buildkite/pipeline.yml
@@ -9,7 +9,7 @@ steps:
     command: |
       julia --color=yes --depwarn=yes --project=GraphNeuralNetworks/test -e '
         import Pkg
-        dev_pkgs = []
+        dev_pkgs = Pkg.PackageSpec[]
         for pkg in ("GNNGraphs", "GNNlib", "GraphNeuralNetworks")
           push!(dev_pkgs, Pkg.PackageSpec(path=pkg));
         end