diff --git a/tmt/plans/bib-image.fmf b/tmt/plans/bib-image.fmf
index 2b5da4c..5aa77c3 100644
--- a/tmt/plans/bib-image.fmf
+++ b/tmt/plans/bib-image.fmf
@@ -171,7 +171,7 @@ execute:
             processors: ">= 2"
           memory: ">= 6 GB"
           disk:
-            - size: '>= 40 GB'
+            - size: '>= 100 GB'
           virtualization:
             is-supported: true