diff --git a/conf/nu_genomics.config b/conf/nu_genomics.config
index 6da5642..b5bb27c 100644
--- a/conf/nu_genomics.config
+++ b/conf/nu_genomics.config
@@ -20,7 +20,12 @@ singularity
 
 process
 {
-  beforeScript = 'module load singularity/latest graphviz/2.40.1'
+  beforeScript = ""
+                    module purge
+                    module load singularity/latest
+                    module load graphviz/2.40.1s
+                 ""
+                 .stripIndent()
   executor = 'slurm'
 }