diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 3c5c48574118396b81a2e712d380ebec3ecfdcdc..efc6ece76915c999518d0756423e50f3e72c25a7 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -69,7 +69,7 @@ dedupData:
   - singularity run 'docker://bicf/gudmaprbkdedup:2.0.0' java -jar /picard/build/libs/picard.jar MarkDuplicates I=./test_data/bam/small/Q-Y5JA_1M.se.sorted.bam O=Q-Y5JA_1M.se.deduped.bam M=Q-Y5JA_1M.se.deduped.Metrics.txt REMOVE_DUPLICATES=true
   - singularity run 'docker://bicf/gudmaprbkdedup:2.0.0' samtools sort -@ `nproc` -O BAM -o Q-Y5JA_1M.se.sorted.deduped.bam ./test_data/bam/small/Q-Y5JA_1M.se.deduped.bam
   - singularity run 'docker://bicf/gudmaprbkdedup:2.0.0' samtools index -@ `nproc` -b ./test_data/bam/small/Q-Y5JA_1M.se.sorted.deduped.bam Q-Y5JA_1M.se.sorted.deduped.bam.bai
-  - for i in {chr1,chr2,chr8}; do 
+  - for i in {"chrNC_000001.11","chrNC_000002.12","chrNC_000019.10"}; do 
       echo "samtools view -b Q-Y5JA_1M.se.sorted.deduped.bam ${i} > Q-Y5JA_1M.se.sorted.deduped.${i}.bam; samtools index -@ `nproc` -b Q-Y5JA_1M.se.sorted.deduped.${i}.bam Q-Y5JA_1M.se.sorted.deduped.${i}.bam.bai;";
       done | singularity run 'docker://bicf/gudmaprbkdedup:2.0.0' parallel -j `nproc` -k
   - pytest -m dedupData