diff --git a/bio/rbt/vcf_fix_iupac_alleles/environment.yaml b/bio/rbt/vcf_fix_iupac_alleles/environment.yaml
new file mode 100644
index 00000000000..ffcf275b9b5
--- /dev/null
+++ b/bio/rbt/vcf_fix_iupac_alleles/environment.yaml
@@ -0,0 +1,8 @@
+channels:
+  - conda-forge
+  - bioconda
+  - nodefaults
+dependencies:
+  - rust-bio-tools =0.42.0
+  - bcftools =1.17
+  - snakemake-wrapper-utils =0.5.3
diff --git a/bio/rbt/vcf_fix_iupac_alleles/meta.yaml b/bio/rbt/vcf_fix_iupac_alleles/meta.yaml
new file mode 100644
index 00000000000..fa7f26737f3
--- /dev/null
+++ b/bio/rbt/vcf_fix_iupac_alleles/meta.yaml
@@ -0,0 +1,10 @@
+name: rbt vcf-fix-iupac-alleles
+description: |
+  Convert any IUPAC codes in alleles into Ns (in order to comply with VCF 4 specs).
+url: https://github.com/rust-bio/rust-bio-tools
+authors:
+  - Filipe G. Vieira
+input:
+  - VCF
+output:
+  - VCF/BCF
diff --git a/bio/rbt/vcf_fix_iupac_alleles/test/Snakefile b/bio/rbt/vcf_fix_iupac_alleles/test/Snakefile
new file mode 100644
index 00000000000..41d17c47434
--- /dev/null
+++ b/bio/rbt/vcf_fix_iupac_alleles/test/Snakefile
@@ -0,0 +1,22 @@
+
+rule vcf_fix_iupac_alleles_vcf:
+    input:
+        "{file}.vcf.gz",
+    output:
+        vcf="results/{file}.vcf.gz",
+    log:
+        "logs/{file}.vcf.log",
+    params:
+        extra="",
+    threads: 1
+    resources:
+        mem_mb=1024,
+    wrapper:
+        "master/bio/rbt/vcf_fix_iupac_alleles"
+
+
+use rule vcf_fix_iupac_alleles_vcf as vcf_fix_iupac_alleles_bcf with:
+    output:
+        bcf="results/{file}.bcf",
+    log:
+        "logs/{file}.bcf.log",
diff --git a/bio/rbt/vcf_fix_iupac_alleles/test/homo_sapiens-chrMT.vcf.gz b/bio/rbt/vcf_fix_iupac_alleles/test/homo_sapiens-chrMT.vcf.gz
new file mode 100644
index 00000000000..29d5ea85ce9
Binary files /dev/null and b/bio/rbt/vcf_fix_iupac_alleles/test/homo_sapiens-chrMT.vcf.gz differ
diff --git a/bio/rbt/vcf_fix_iupac_alleles/wrapper.py b/bio/rbt/vcf_fix_iupac_alleles/wrapper.py
new file mode 100644
index 00000000000..c332490cc9c
--- /dev/null
+++ b/bio/rbt/vcf_fix_iupac_alleles/wrapper.py
@@ -0,0 +1,18 @@
+__author__ = "Filipe G. Vieira"
+__copyright__ = "Copyright 2023, Filipe G. Vieira"
+__license__ = "MIT"
+
+import tempfile
+from snakemake.shell import shell
+from snakemake_wrapper_utils.bcftools import get_bcftools_opts
+
+
+bcftools_opts = get_bcftools_opts(snakemake, parse_ref=False)
+log = snakemake.log_fmt_shell(stdout=True, stderr=True)
+extra = snakemake.params.get("extra", "")
+
+
+with tempfile.TemporaryDirectory() as tmpdir:
+    shell(
+        "(rbt vcf-fix-iupac-alleles {extra} < {snakemake.input[0]} | bcftools sort --temp-dir {tmpdir} {bcftools_opts}) {log}"
+    )
diff --git a/test.py b/test.py
index af8383e390f..17ce445830a 100644
--- a/test.py
+++ b/test.py
@@ -6121,13 +6121,26 @@ def test_verifybamid2():
 
 
 @skip_if_not_modified
-def test_collapse_reads_to_fragments_bam():
+def test_rbt_collapse_reads_to_fragments_bam():
     run(
         "bio/rbt/collapse_reads_to_fragments-bam",
         ["snakemake", "--cores", "1", "--use-conda", "-F"],
     )
 
 
+@skip_if_not_modified
+def test_rbt_vcf_fix_iupac_alleles():
+    run(
+        "bio/rbt/vcf_fix_iupac_alleles",
+        ["snakemake", "--cores", "1", "--use-conda", "-F", "results/homo_sapiens-chrMT.vcf.gz"],
+    )
+
+    run(
+        "bio/rbt/vcf_fix_iupac_alleles",
+        ["snakemake", "--cores", "1", "--use-conda", "-F", "results/homo_sapiens-chrMT.bcf"],
+    )
+
+
 @skip_if_not_modified
 def test_gatk_mutect2_calling_meta():
     run(