diff --git a/temperature_logger/requirements.txt b/temperature_logger/requirements.txt
new file mode 100644
index 0000000..0b26a69
--- /dev/null
+++ b/temperature_logger/requirements.txt
@@ -0,0 +1,2 @@
+pyserial>=3.5,<4.0
+pytest>=7.0,<8.0