diff --git a/Program_Licenses.md b/Program_Licenses.md
index 7e0049c8e..d57e19474 100644
--- a/Program_Licenses.md
+++ b/Program_Licenses.md
@@ -27,6 +27,7 @@ The licenses of the open-source software that is contained in these Docker image
| BUSCO | MIT | https://gitlab.com/ezlab/busco/-/raw/master/LICENSE |
| BWA | GNU GPLv3 | https://github.com/lh3/bwa/blob/master/COPYING |
| Canu
Racon
Minimap2 | GNU GPLv3 (Canu),
MIT (Racon),
MIT (Minimap2) | https://github.com/marbl/canu/blob/master/README.license.GPL https://github.com/isovic/racon/blob/master/LICENSE https://github.com/lh3/minimap2/blob/master/LICENSE.txt |
+| CAT | MIT | https://github.com/MGXlab/CAT_pack?tab=MIT-1-ov-file#readme |
| centroid | GitHub No License | https://github.com/https://github.com/stjacqrm/centroid |
| CDC-SPN | GitHub No License | https://github.com/BenJamesMetcalf/Spn_Scripts_Reference |
| cfsan-snp-pipeline | non-standard license see --> | https://github.com/CFSAN-Biostatistics/snp-pipeline/blob/master/LICENSE.txt |
diff --git a/README.md b/README.md
index 4e9c58238..0d8b7589d 100644
--- a/README.md
+++ b/README.md
@@ -135,6 +135,7 @@ To learn more about the docker pull rate limits and the open source software pro
| [BWA](https://hub.docker.com/r/staphb/bwa)
[![docker pulls](https://badgen.net/docker/pulls/staphb/bwa)](https://hub.docker.com/r/staphb/bwa) |
- 0.7.17
- [0.7.18](./bwa/0.7.18/)
| https://github.com/lh3/bwa |
| [Canu](https://hub.docker.com/r/staphb/canu)
[![docker pulls](https://badgen.net/docker/pulls/staphb/canu?)](https://hub.docker.com/r/staphb/canu)| | https://canu.readthedocs.io/en/latest/
https://github.com/marbl/canu |
| [Canu-Racon](https://hub.docker.com/r/staphb/canu-racon/)
[![docker pulls](https://badgen.net/docker/pulls/staphb/canu-racon)](https://hub.docker.com/r/staphb/canu-racon) | - 1.7.1 (Canu), 1.3.1 (Racon), 2.13 (minimap2)
- 1.9 (Canu), 1.4.3 (Racon), 2.17 (minimap2)
- 1.9i (Canu), 1.4.3 (Racon), 2.17 (minimap2), (+racon_preprocess.py)
- 2.0 (Canu), 1.4.3 (Racon), 2.17 (minimap2)
| https://canu.readthedocs.io/en/latest/
https://github.com/lbcb-sci/racon
https://github.com/isovic/racon (ARCHIVED)
https://lh3.github.io/minimap2/ |
+| [CAT](https://github.com/dutilh/CAT)
[![docker pulls](https://badgen.net/docker/pulls/staphb/cat)](https://hub.docker.com/r/staphb/cat) | | https://github.com/dutilh/CAT |
| [centroid](https://hub.docker.com/r/staphb/centroid/)
[![docker pulls](https://badgen.net/docker/pulls/staphb/centroid)](https://hub.docker.com/r/staphb/centroid) | | https://github.com/stjacqrm/centroid |
| [CDC-SPN](https://hub.docker.com/r/staphb/cdc-spn/)
[![docker pulls](https://badgen.net/docker/pulls/staphb/cdc-spn)](https://hub.docker.com/r/staphb/cdc-spn) | | https://github.com/BenJamesMetcalf/Spn_Scripts_Reference |
| [cfsan-snp-pipeline](https://hub.docker.com/r/staphb/cfsan-snp-pipeline)
[![docker pulls](https://badgen.net/docker/pulls/staphb/cfsan-snp-pipeline)](https://hub.docker.com/r/staphb/cfsan-snp-pipeline) | | https://github.com/CFSAN-Biostatistics/snp-pipeline |
diff --git a/cat/5.3/Dockerfile b/cat/5.3/Dockerfile
new file mode 100644
index 000000000..1e8bfd51e
--- /dev/null
+++ b/cat/5.3/Dockerfile
@@ -0,0 +1,90 @@
+# Set global variables
+ARG CAT_VER="5.3"
+ARG DIAMOND_VER="2.1.9"
+
+# Build Stage
+FROM ubuntu:focal AS builder
+ARG CAT_VER
+ARG DIAMOND_VER
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+# Install dependencies
+RUN apt-get update && apt-get install -y --no-install-recommends \
+ wget unzip less automake cmake zlib1g-dev libzstd-dev \
+ python3 python3-pip git prodigal build-essential && \
+ apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/*
+
+# Install Python dependencies
+RUN pip install --no-cache-dir certifi biopython
+
+# Clone CAT and set permissions
+RUN wget https://github.com/MGXlab/CAT_pack/archive/refs/tags/v${CAT_VER}.tar.gz && \
+ tar -xvzf v${CAT_VER}.tar.gz && \
+ chmod +x CAT_pack-${CAT_VER}/CAT_pack/CAT && \
+ rm v${CAT_VER}.tar.gz
+
+
+# Install Diamond
+RUN wget http://github.com/bbuchfink/diamond/archive/v${DIAMOND_VER}.tar.gz && \
+ tar -xzf v${DIAMOND_VER}.tar.gz && \
+ cd diamond-${DIAMOND_VER} && mkdir bin && cd bin && \
+ cmake .. && make -j$(nproc) && make install && \
+ cd ../../ && rm -rf diamond-${DIAMOND_VER}*
+
+# Application Stage
+FROM ubuntu:focal AS app
+ARG CAT_VER
+
+LABEL base.image="ubuntu:focal"
+LABEL dockerfile.version="1"
+LABEL software="CAT"
+LABEL software.version=${CAT_VER}
+LABEL description="CAT: a tool for taxonomic classification of contigs and metagenome-assembled genomes (MAGs)."
+LABEL website="https://github.com/dutilh/CAT"
+LABEL license.url="https://github.com/dutilh/CAT/blob/master/LICENSE.md"
+LABEL maintainer="Taylor K. Paisie"
+LABEL maintainer.email='ltj8@cdc.gov'
+
+# Copy necessary files from the builder stage
+COPY --from=builder /CAT_pack-${CAT_VER}/ /CAT/
+COPY --from=builder /usr/ /usr/
+
+# Add CAT to PATH
+ENV PATH="${PATH}:/CAT/CAT_pack"
+
+CMD CAT --help
+WORKDIR /data
+
+# Optional stage: Test data
+FROM app AS test
+
+WORKDIR /data/test
+
+RUN wget -nv --no-check-certificate \
+ https://raw.githubusercontent.com/taylorpaisie/docker_containers/main/checkm2/1.0.2/burk_wgs.fa \
+ -O burk_wgs_pos_ctrl.fa &&\
+ wget -nv --no-check-certificate \
+ https://merenlab.org/data/refining-mags/files/GN02_MAG_IV_B_1-contigs.fa \
+ -O GN02_MAG_IV_B_1-contigs.fa
+
+# Prepare testing database
+RUN mkdir -p db_tests && \
+ gzip -d /CAT/tests/data/prepare/small.fa.gz && \
+ CAT prepare --db_fasta /CAT/tests/data/prepare/small.fa \
+ --acc2tax /CAT/tests/data/prepare/prot2acc.txt \
+ --names /CAT/tests/data/prepare/names.dmp \
+ --nodes /CAT/tests/data/prepare/nodes.dmp \
+ --db_dir db_tests/
+
+# Running CAT on contigs
+RUN CAT contigs -c burk_wgs_pos_ctrl.fa \
+ -d db_tests/db \
+ -t db_tests/tax
+
+# Running BAT on a set of MAGs
+RUN CAT bins -b GN02_MAG_IV_B_1-contigs.fa \
+ -d db_tests/db \
+ -t db_tests/tax
+
+WORKDIR /data
diff --git a/cat/5.3/README.md b/cat/5.3/README.md
new file mode 100644
index 000000000..d85dffb59
--- /dev/null
+++ b/cat/5.3/README.md
@@ -0,0 +1,62 @@
+# CAT
+
+Main tool: [CAT v5.3](https://github.com/dutilh/CAT)
+
+Code repository: https://github.com/dutilh/CAT
+
+Basic information on how to use this tool:
+- executable: |
+```
+usage: CAT (prepare | contigs | bin | bins | add_names | summarise) [-v / --version] [-h / --help]
+
+Run Contig Annotation Tool (CAT) or Bin Annotation Tool (BAT).
+
+Required choice:
+ download Download and preprocess data from NCBI nr or GTDB.
+ prepare Construct database files.
+ contigs Run CAT.
+ bins Run BAT.
+ add_names Add taxonomic names to CAT or BAT output files.
+ summarise Summarise a named CAT or BAT classification file.
+
+Optional arguments:
+ -v, --version Print version information and exit.
+ -h, --help Show this help message and exit.
+```
+
+- help: `CAT --help`
+- version: `CAT --version`
+- description: |
+> Contig Annotation Tool (CAT) and Bin Annotation Tool (BAT) are pipelines for the taxonomic classification of long DNA sequences and metagenome assembled genomes (MAGs/bins) of both known and (highly) unknown microorganisms, as generated by contemporary metagenomics studies
+
+
+Full documentation: https://github.com/dutilh/CAT
+
+
+# Testing CAT:
+```
+# Download test data
+wget -nv --no-check-certificate https://raw.githubusercontent.com/taylorpaisie/docker_containers/main/checkm2/1.0.2/burk_wgs.fa -O burk_wgs_pos_ctrl.fa
+
+wget -nv --no-check-certificate https://merenlab.org/data/refining-mags/files/GN02_MAG_IV_B_1-contigs.fa -O GN02_MAG_IV_B_1-contigs.fa
+
+# Prepare testing database
+RUN mkdir -p db_tests && \
+ gzip -d /CAT/tests/data/prepare/small.fa.gz && \
+ CAT prepare --db_fasta /CAT/tests/data/prepare/small.fa \
+ --acc2tax /CAT/tests/data/prepare/prot2acc.txt \
+ --names /CAT/tests/data/prepare/names.dmp \
+ --nodes /CAT/tests/data/prepare/nodes.dmp \
+ --db_dir db_tests/
+
+# Use CAT and BAT for taxonomic classification for both best datasets
+# Running CAT on contigs
+CAT contigs -c test/burk_wgs_pos_ctrl.fa \
+ -d db_tests/db \
+ -t db_tests/tax
+
+# Running BAT on a set of MAGs
+CAT bins -b test/GN02_MAG_IV_B_1-contigs.fa \
+ -d db_tests/db \
+ -t db_tests/tax
+```