diff --git a/modules/services/slurm.nix b/modules/services/slurm.nix
index e006b9a0..124eef84 100644
--- a/modules/services/slurm.nix
+++ b/modules/services/slurm.nix
@@ -151,6 +151,7 @@ inputs:
             # correctly set priority
             PriorityType=priority/multifactor
             PriorityWeightAge=10000
+            PriorityWeightFairshare=30000
 
             # use low resource as default
             DefCpuPerGPU=1