diff --git a/modules/bclconvert/main.nf b/modules/bclconvert/main.nf
index c891ab7f..7c32bd6f 100644
--- a/modules/bclconvert/main.nf
+++ b/modules/bclconvert/main.nf
@@ -5,7 +5,7 @@ process BCLCONVERT {
     if (params.enable_conda) {
         exit 1, "Conda environments cannot be used when using bcl-convert. Please use docker or singularity containers."
     }
-    container "nfcore/bclconvert:3.9.3"
+    container "nfcore/bclconvert:3.10.5"
 
     input:
     tuple val(meta), path(samplesheet), path(run_dir)
@@ -13,7 +13,7 @@ process BCLCONVERT {
     output:
     tuple val(meta), path("**[!Undetermined]_S*_L00?_R?_00?.fastq.gz")  ,emit: fastq
     tuple val(meta), path("**_S*_L00?_I?_00?.fastq.gz")                 ,optional:true ,emit: fastq_idx
-    tuple val(meta), path("Undetermined_S0_L00?_R?_00?.fastq.gz")       ,emit: undetermined
+    tuple val(meta), path("Undetermined_S0_L00?_R?_00?.fastq.gz")       ,optional:true ,emit: undetermined
     tuple val(meta), path("Undetermined_S0_L00?_I?_00?.fastq.gz")       ,optional:true, emit: undetermined_idx
     tuple val(meta), path("Reports")                                    ,emit: reports
     tuple val(meta), path("Logs")                                       ,emit: logs
diff --git a/modules/bclconvert/meta.yml b/modules/bclconvert/meta.yml
index 91d2ca6a..82ebf0fe 100644
--- a/modules/bclconvert/meta.yml
+++ b/modules/bclconvert/meta.yml
@@ -39,7 +39,7 @@ output:
       pattern: "**_S*_L00?_I?_00?.fastq.gz"
   - undetermined:
       type: file
-      description: Undetermined sample FASTQ files
+      description: Optional undetermined sample FASTQ files
       pattern: "Undetermined_S0_L00?_R?_00?.fastq.gz"
   - undetermined_idx:
       type: file
diff --git a/tests/modules/bclconvert/test.yml b/tests/modules/bclconvert/test.yml
index f03b72e2..74aab696 100644
--- a/tests/modules/bclconvert/test.yml
+++ b/tests/modules/bclconvert/test.yml
@@ -10,7 +10,7 @@
     - path: output/bclconvert/Reports/Adapter_Metrics.csv
       md5sum: 989240b8840b2169ac1061f952c90f6c
     - path: output/bclconvert/Reports/Demultiplex_Stats.csv
-      md5sum: bb2ed9c6b46e03fbc060efd2c75398b0
+      md5sum: 93949a8cd96f907d83e0808c1ec2a04b
     - path: output/bclconvert/Reports/IndexMetricsOut.bin
       md5sum: 9e688c58a5487b8eaf69c9e1005ad0bf
     - path: output/bclconvert/Reports/Index_Hopping_Counts.csv
@@ -26,7 +26,7 @@
     - path: output/bclconvert/Reports/fastq_list.csv
       md5sum: 05bc84f51840f5754cfb8381b36f2cb0
     - path: output/bclconvert/Sample1_S1_L001_R1_001.fastq.gz
-      md5sum: 883037281293a2ec4995d34257f19866
+      md5sum: 57d2f3b389656245f923351d3e3d2d65
     - path: output/bclconvert/Undetermined_S0_L001_R1_001.fastq.gz
       md5sum: a4745abc5e7fdb89cc6df3069f3c6e69
     - path: output/bclconvert/flowcell/InterOp/ControlMetricsOut.bin