diff --git a/ddr/ddr/SMX.txt b/ddr/ddr/SMX.txt
new file mode 100644
index 0000000..ae1dec4
--- /dev/null
+++ b/ddr/ddr/SMX.txt
@@ -0,0 +1,2 @@
+this version of the SMX.dll is compiled from this release:
+https://github.com/steprevolution/stepmaniax-sdk/releases/tag/2020-04-03-01
\ No newline at end of file