diff --git a/modules/03_metrics.nf b/modules/03_metrics.nf
index 839f047..fe8ff12 100644
--- a/modules/03_metrics.nf
+++ b/modules/03_metrics.nf
@@ -52,7 +52,8 @@ process METRICS {
     tag "${name}"
     publishDir "${params.output}/${name}/metrics/gatk_multiple_metrics", mode: "copy"
 
-    conda (params.enable_conda ? "bioconda::gatk4=4.2.0.0" : null)
+    // NOTE: the method CollectMultipleMetrics has a hidden dependency to R for making plots
+    conda (params.enable_conda ? "bioconda::gatk4=4.2.0.0 r::r=3.6.0" : null)
 
     input:
     tuple val(name), val(type), file(bam), file(bai)
diff --git a/nextflow.config b/nextflow.config
index 56197ec..9fdfbba 100644
--- a/nextflow.config
+++ b/nextflow.config
@@ -46,7 +46,7 @@ process.shell = ['/bin/bash', '-euo', 'pipefail']
 
 cleanup = true
 
-VERSION = '1.7.1'
+VERSION = '1.7.2'
 DOI = 'https://zenodo.org/badge/latestdoi/358400957'
 
 manifest {