diff --git a/scripts/build-unit-test-docker b/scripts/build-unit-test-docker
index 3011c2f..7bc1157 100755
--- a/scripts/build-unit-test-docker
+++ b/scripts/build-unit-test-docker
@@ -823,6 +823,7 @@
     python3-yaml \
     rsync \
     shellcheck \
+    socat \
     sudo \
     systemd \
     valgrind \