diff --git a/Dockerfile b/Dockerfile
index d66b544..bd9406a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -19,7 +19,10 @@ FROM alpine
 
 LABEL org.opencontainers.image.authors="bluefox@privacynerd.de"
 
-RUN apk update --no-cache && apk add --no-cache ncurses-terminfo-base
+RUN apk update --no-cache && \
+    apk add --no-cache ncurses-terminfo-base && \
+    adduser -g "cmatrix" -s /usr/sbin/nologin -D -H cmatrix
 COPY --from=cmatrixbuildimage /cmatrix/cmatrix /cmatrix
 
+USER cmatrix
 CMD ["./cmatrix"]