diff --git a/packages/wf-uq-akar4/package.py b/packages/wf-uq-akar4/package.py
index 3d7d72600f02f28e946d79fc328bee220a1eb006..6c4e9c40932ee4885934ddcba617631784698703 100644
--- a/packages/wf-uq-akar4/package.py
+++ b/packages/wf-uq-akar4/package.py
@@ -12,6 +12,8 @@ class WfUqAkar4(BundlePackage):
 
     homepage="https://wiki.ebrains.eu/bin/view/Collabs/subcellular-modeling-and-simulation/Lab"
 
+    version("0.1")
+
     depends_on("r-mass")
     depends_on("r-desolve")
     depends_on("r-pracma")