diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..40a07ae
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,4 @@
+svgwrite   ~= 1.4.1
+numpy      ~= 1.20.3
+matplotlib ~= 3.4.2
+adif-io    ~= 0.0.3