diff --git a/config/config.default.yaml b/config/config.default.yaml
index ca2d1ba3..ad4144d5 100644
--- a/config/config.default.yaml
+++ b/config/config.default.yaml
@@ -668,7 +668,7 @@ industry:
 # docs in https://pypsa-eur.readthedocs.io/en/latest/configuration.html#costs
 costs:
   year: 2030
-  version: v0.8.0
+  version: v0.8.1
   rooftop_share: 0.14  # based on the potentials, assuming  (0.1 kW/m2 and 10 m2/person)
   social_discountrate: 0.02
   fill_values: