diff --git a/Software/build_dtcs.py b/Software/build_dtcs.py
index b04e73b..e09672f 100644
--- a/Software/build_dtcs.py
+++ b/Software/build_dtcs.py
@@ -1,3 +1,6 @@
+Import("env")  # pylint: disable=undefined-variable
+env.Execute("\"$PYTHONEXE\" -m pip install jinja2")
+
 import os
 import time
 from jinja2 import Environment, FileSystemLoader