diff --git a/operating-systems/buer.scm b/operating-systems/buer.scm
index 94481c1..555d849 100644
--- a/operating-systems/buer.scm
+++ b/operating-systems/buer.scm
@@ -229,7 +229,7 @@
           (service mcron-service-type
                    (mcron-configuration
                     (jobs (list #~(job "* * * * Sun"
-                                       "guix gc --optimize --free-space=5G")))))
+                                       "guix gc --optimize --free-space=10G")))))
 
           #|Device management services|#
           (service udev-service-type