diff --git a/consts/go.mod b/consts/go.mod
new file mode 100644
index 0000000..ed25b23
--- /dev/null
+++ b/consts/go.mod
@@ -0,0 +1,3 @@
+module github.com/vitalick/d2s/d2s-conv
+
+go 1.13
\ No newline at end of file
diff --git a/go.mod b/go.mod
index 52a7b2f..d8ac48c 100644
--- a/go.mod
+++ b/go.mod
@@ -1,5 +1,5 @@
 module github.com/vitalick/d2s
 
-go 1.17
+go 1.13
 
 require github.com/vitalick/bitslice v1.1.2