diff --git a/sonic-slave/Dockerfile b/sonic-slave/Dockerfile
index 50e96bfcd1..7b03e4ee81 100644
--- a/sonic-slave/Dockerfile
+++ b/sonic-slave/Dockerfile
@@ -82,6 +82,9 @@ RUN apt-get update && apt-get install -y libmysqlclient-dev libmysqld-dev libper
 # For mpdecimal
 RUN apt-get update && apt-get install -y docutils-common libjs-sphinxdoc libjs-underscore python-docutils python-jinja2 python-markupsafe python-pygments python-roman python-sphinx sphinx-common python3-sphinx
 
+# For templating
+RUN pip install j2cli
+
 # Install depot-tools (for git-retry)
 RUN git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git /usr/share/depot_tools
 ENV PATH /usr/share/depot_tools:$PATH