diff --git a/docker/backend/Dockerfile b/docker/backend/Dockerfile
index f3073bcf3..2b89763f6 100644
--- a/docker/backend/Dockerfile
+++ b/docker/backend/Dockerfile
@@ -39,6 +39,9 @@ ENV STACK_ROOT="${PROJECT_DIR}/.stack"
 WORKDIR ${PROJECT_DIR}
 ENV HOME=${PROJECT_DIR}
 
+COPY stack.yaml ${PROJECT_DIR}/stack.yaml
+COPY stack.yaml.lock ${PROJECT_DIR}/stack.yaml.lock
+COPY package.yaml ${PROJECT_DIR}/package.yaml
 RUN stack install yesod-bin
 RUN stack install hpack