diff --git a/containers/phylowgs/v1.5-msk/Dockerfile b/containers/phylowgs/v1.5.1-msk/Dockerfile
similarity index 87%
rename from containers/phylowgs/v1.5-msk/Dockerfile
rename to containers/phylowgs/v1.5.1-msk/Dockerfile
index cdc356a..5a9987c 100644
--- a/containers/phylowgs/v1.5-msk/Dockerfile
+++ b/containers/phylowgs/v1.5.1-msk/Dockerfile
@@ -6,14 +6,14 @@ LABEL org.opencontainers.image.vendor="MSKCC-OMICS-WORKFLOWS" \
       org.opencontainers.image.created="2025-08-21T11:07:00Z" \
       imageprivacy="False" \
       org.opencontainers.image.licenses="GPL-3.0" \
-      org.opencontainers.image.version="1.5-msk" \
+      org.opencontainers.image.version="1.5.1-msk" \
       org.opencontainers.image.source="https://github.com/mskcc/phylowgs" \
       org.opencontainers.image.url="https://github.com/mskcc-omics-workflows/containers/containers/phylowgs/" \
       org.opencontainers.image.title="Phylowgs" \
       org.opencontainers.image.description="Application for inferring subclonal composition and evolution from whole-genome sequencing data."
 
 ENV DEBIAN_FRONTEND=noninteractive
-ENV PHYLOWGS_TAG="v1.5-msk"
+ENV PHYLOWGS_TAG="v1.5.1-msk"
 ARG TARGETPLATFORM
 
 RUN apt-get update -y \
@@ -23,7 +23,7 @@ RUN apt-get update -y \
       && curl https://bootstrap.pypa.io/pip/2.7/get-pip.py --output /tmp/get-pip.py \
       && python2 /tmp/get-pip.py \
       # Install phylowgs
-      && git clone --branch 1.5 https://github.com/mskcc/phylowgs /tmp/phylowgs \
+      && git clone --branch 1.5.1 https://github.com/mskcc/phylowgs /tmp/phylowgs \
       && pip2 install --no-cache-dir -r /tmp/phylowgs/requirements.txt  \
       && cp -r /tmp/phylowgs/ /usr/bin \
       && g++ -I/usr/bin/phylowgs -o /usr/bin/phylowgs/mh.o -O3 /usr/bin/phylowgs/mh.cpp  /usr/bin/phylowgs/util.cpp -I/usr/include -L/usr/lib/aarch64-linux-gnu -lgsl -lgslcblas -lm \
@@ -31,4 +31,4 @@ RUN apt-get update -y \
       && rm -r /tmp/phylowgs \
       && apt-get clean \
       && apt-get purge \
-      && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
\ No newline at end of file
+      && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*