diff --git a/modules/local/samplesheet_check.nf b/modules/local/samplesheet_check.nf
index ee7c3f8..50ba637 100644
--- a/modules/local/samplesheet_check.nf
+++ b/modules/local/samplesheet_check.nf
@@ -3,10 +3,10 @@ process SAMPLESHEET_CHECK {
     tag "$samplesheet"
     label 'process_single'
 
-    conda "conda-forge::python=3.8.3"
+    conda "conda-forge::python=3.9.1"
     container "${ workflow.containerEngine == 'singularity' && !task.ext.singularity_pull_docker_container ?
-        'https://depot.galaxyproject.org/singularity/python:3.8.3' :
-        'biocontainers/python:3.8.3' }"
+        'https://depot.galaxyproject.org/singularity/python:3.9--1' :
+        'biocontainers/python:3.9--1' }"
 
     input:
     path samplesheet