diff --git a/Dockerfile.test b/Dockerfile.test
index bc07ab1..9909ff7 100644
--- a/Dockerfile.test
+++ b/Dockerfile.test
@@ -44,5 +44,5 @@ RUN --mount=type=cache,id=pip-venv,target=/root/.cache/pip \
     ./install.sh
 
 # Run tests
-RUN --mount=type=cache,id=voices,target=/root/.local/share/mimic3 \
-    ./test.sh
+COPY voices/ /root/.local/share/mimic3/voices/
+RUN ./test.sh