diff --git a/Dockerfile b/Dockerfile
index d0f3a937..2afb5453 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,6 +3,7 @@ FROM node:21-bullseye-slim AS builder-base
 WORKDIR /home/node/app
 
 # Install dependencies first so rebuild of these layers is only needed when dependencies change
+COPY lib/ ./lib/
 COPY package.json yarn.lock .
 COPY .env.prod .env
 RUN yarn cache clean -f && yarn install
diff --git a/tests.Dockerfile b/tests.Dockerfile
index 9acaf557..9a080dc6 100644
--- a/tests.Dockerfile
+++ b/tests.Dockerfile
@@ -3,6 +3,7 @@ FROM node:21-bullseye-slim AS builder-base
 WORKDIR /home/node/app
 
 # Install dependencies first so rebuild of these layers is only needed when dependencies change
+COPY lib/ ./lib/
 COPY package.json yarn.lock .
 COPY .env.template .env
 RUN yarn cache clean -f && yarn install