diff --git a/Pipfile b/Pipfile
new file mode 100644
index 0000000..f94e430
--- /dev/null
+++ b/Pipfile
@@ -0,0 +1,12 @@
+[[source]]
+url = "https://pypi.org/simple"
+verify_ssl = true
+name = "pypi"
+
+[packages]
+ortools = "~=9.0"
+
+[dev-packages]
+
+[requires]
+python_version = "3.9"