diff --git a/backend/runtime.txt b/backend/runtime.txt
new file mode 100644
index 0000000000000000000000000000000000000000..0fd6938d6a47922e593b6011776d709452af6dc3
--- /dev/null
+++ b/backend/runtime.txt
@@ -0,0 +1 @@
+python-3.8.6