diff --git a/docker/Ubuntu18.04-pytorch1.12.1-cuda11.3-cudnn8/Dockerfile b/docker/Ubuntu18.04-pytorch1.12.1-cuda11.3-cudnn8/Dockerfile
index 524303fb8..3637d2f11 100644
--- a/docker/Ubuntu18.04-pytorch1.12.1-cuda11.3-cudnn8/Dockerfile
+++ b/docker/Ubuntu18.04-pytorch1.12.1-cuda11.3-cudnn8/Dockerfile
@@ -68,6 +68,7 @@ RUN git clone https://github.com/k2-fsa/icefall /workspace/icefall && \
 	cd /workspace/icefall && \
 	pip install -r requirements.txt
 
+RUN pip install kaldifeat 
 ENV PYTHONPATH /workspace/icefall:$PYTHONPATH
 
-WORKDIR /workspace/icefall
\ No newline at end of file
+WORKDIR /workspace/icefall