1 files changed, 1 insertions, 0 deletions
diff --git a/scripts-dev/complement.sh b/scripts-dev/complement.sh
index 6381f7092e..eab23f18f1 100755
--- a/scripts-dev/complement.sh
+++ b/scripts-dev/complement.sh
@@ -101,6 +101,7 @@ if [ -z "$skip_docker_build" ]; then
     echo_if_github "::group::Build Docker image: matrixdotorg/synapse"
     docker build -t matrixdotorg/synapse \
       --build-arg TEST_ONLY_SKIP_DEP_HASH_VERIFICATION \
+      --build-arg TEST_ONLY_IGNORE_POETRY_LOCKFILE \
       -f "docker/Dockerfile" .
     echo_if_github "::endgroup::"