diff --git a/.dockerignore b/.dockerignore
index 02c61176..86150d2d 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -4,6 +4,10 @@ donate.md
 screenshots/
 docs/
 
+vendor/lxmfy/tests/
+vendor/lxmfy/docs/
+vendor/lxmfy/.gitea/
+
 # Development files
 android/
 android/keystore/
diff --git a/Dockerfile b/Dockerfile
index e246e442..149ebfb1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -43,6 +43,7 @@ ENV PATH="/opt/venv/bin:$PATH"
 RUN pip install --no-cache-dir --upgrade "pip>=26.0" "setuptools" "jaraco.context>=6.1.0"
 
 COPY pyproject.toml poetry.lock README.md ./
+COPY vendor ./vendor
 RUN poetry config virtualenvs.create false && \
     poetry check --lock && \
     poetry install --no-root --only main --no-interaction --no-ansi && \
diff --git a/Dockerfile.hardened b/Dockerfile.hardened
index f46b3f6e..dfc10a13 100644
--- a/Dockerfile.hardened
+++ b/Dockerfile.hardened
@@ -35,6 +35,7 @@ ENV PATH="/opt/venv/bin:$PATH"
 RUN pip install --no-cache-dir --upgrade "pip>=26.0" "setuptools" "jaraco.context>=6.1.0"
 
 COPY pyproject.toml poetry.lock README.md ./
+COPY vendor ./vendor
 RUN poetry config virtualenvs.create false && \
     poetry check --lock && \
     poetry install --no-root --only main --no-interaction --no-ansi && \