diff --git a/Dockerfile.devuan b/Dockerfile.devuan
index c78181a..b4f221a 100644
--- a/Dockerfile.devuan
+++ b/Dockerfile.devuan
@@ -4,8 +4,7 @@ ENV DEBIAN_FRONTEND=noninteractive
 # Need Devuan's debootstrap, which also supports Debian and Ubuntu.
 ARG RELEASE_KEY="94532124541922FB" # ceres key - https://www.devuan.org/os/keyring
 RUN echo "Adding Devuan ceres signing key (https://www.devuan.org/os/keyring):" ${RELEASE_KEY}
-RUN echo 'deb http://deb.devuan.org/merged ceres main contrib non-free' > /etc/apt/sources.list.d/devuan.list && \
-    echo 'deb-src http://deb.devuan.org/merged ceres main contrib non-free' >> /etc/apt/sources.list.d/devuan.list
+RUN echo 'deb http://deb.devuan.org/merged ceres main' > /etc/apt/sources.list.d/devuan.list 
 
 # Use Ubuntu's gpg to get Devuan's signing key.
 RUN apt-get update && apt-get install -y -t noble gpg