diff --git a/docker/ci/Dockerfile b/docker/ci/Dockerfile
index f195d6422a..217538f074 100644
--- a/docker/ci/Dockerfile
+++ b/docker/ci/Dockerfile
@@ -13,4 +13,5 @@ RUN DEBIAN_FRONTEND=noninteractive apt-get update && apt-get install -y \
     rustc cargo \
     python3-lxml \
     python3-empy \
+    python3-pexpect \
     && rm -rf /var/lib/apt/lists/*