diff --git a/docker/backend/Dockerfile b/docker/backend/Dockerfile
index b122a756c..8d83667c2 100644
--- a/docker/backend/Dockerfile
+++ b/docker/backend/Dockerfile
@@ -4,7 +4,7 @@ FROM debian:12.5
 RUN apt-get -y update
 
 RUN apt-get -y install haskell-stack git
-RUN apt-get -y install alex g++ happy libghc-zlib-dev libpq-dev
+RUN apt-get -y install alex g++ happy libghc-zlib-dev libpq-dev libsodium-dev pkg-config
 
 ADD . /fradrive
 WORKDIR /fradrive