diff --git a/README.md b/README.md
index b3a3316..9930c03 100644
--- a/README.md
+++ b/README.md
@@ -6,4 +6,4 @@ Repository to manage uploading data to the cloud
 [![semantic-release: angular](https://img.shields.io/badge/semantic--release-angular-e10079?logo=semantic-release)](https://github.com/semantic-release/semantic-release)
 
 ## Usage
-We can add additional python if needed. For now, this will publish a singularity container with `awscli` installed. Most jobs will just use the sync command.
+We can add additional python if needed. For now, this will publish a singularity container with `s5cmd` installed. Most jobs will just use the sync command.
diff --git a/scripts/singularity_build.def b/scripts/singularity_build.def
index 845f836..0934700 100644
--- a/scripts/singularity_build.def
+++ b/scripts/singularity_build.def
@@ -1,8 +1,2 @@
 Bootstrap: docker
-From: python:3.10-bullseye
-
-%post
-    curl "https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" -o "awscliv2.zip"
-    unzip awscliv2.zip
-    rm awscliv2.zip
-    ./aws/install
+From: peakcom/s5cmd:v2.2.2