diff --git a/src/nextflow.config b/src/nextflow.config
index df01d720d2cf26b934e32739a9cced9e7b3d209b..925ec23c8a6fce6e76a17c6d1498f39358739bc3 100644
--- a/src/nextflow.config
+++ b/src/nextflow.config
@@ -1,4 +1,4 @@
-nextflowVersion = '>=25'
+nextflowVersion = '>=20'
 
 manifest {
     homePage = 'https://gitbio.ens-lyon.fr/LBMC/nextflow'