diff --git a/containers/neoantigen-utils-base/1.6.1/Dockerfile b/containers/neoantigen-utils-base/1.6.1/Dockerfile
index 65eadad..3f946e6 100644
--- a/containers/neoantigen-utils-base/1.6.1/Dockerfile
+++ b/containers/neoantigen-utils-base/1.6.1/Dockerfile
@@ -102,6 +102,7 @@ RUN apt-get update \
     && apt-get install --no-install-recommends -y \
     libffi8 \
     gzip \
+    unzip \
     coreutils \
     libgdbm6 \
     libsqlite3-0 \