diff --git a/Dockerfile.test b/Dockerfile.test
index 9974b34..5f19b94 100644
--- a/Dockerfile.test
+++ b/Dockerfile.test
@@ -47,4 +47,5 @@ RUN if [ "${SCHEME}" = "skint" ]; then cp -r /build/r7rs-srfi/srfi/39.* srfi/; f
 RUN if [ "${SCHEME}" = "tr7" ]; then cp -r /build/r7rs-srfi/srfi/39.* srfi/; fi
 COPY Makefile .
 COPY retropikzel retropikzel/
+COPY retropikzel libs/retropikzel/