diff --git a/libcxx/utils/ci/Dockerfile b/libcxx/utils/ci/Dockerfile
index 54dd0f1186880..f9e89c80435fe 100644
--- a/libcxx/utils/ci/Dockerfile
+++ b/libcxx/utils/ci/Dockerfile
@@ -92,6 +92,7 @@ RUN sudo apt-get update \
         python3 \
         python3-dev \
         python3-distutils \
+        python3-packaging \
         python3-psutil \
         software-properties-common \
         swig4.0 \