diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..589bc0f
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,5 @@
+module tildegit.org/solderpunk/molly-brown
+
+go 1.15
+
+require github.com/BurntSushi/toml v1.2.1 // indirect
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..4614a74
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,2 @@
+github.com/BurntSushi/toml v1.2.1 h1:9F2/+DoOYIOksmaJFPw1tGFy1eDnIJXg+UHjuD8lTak=
+github.com/BurntSushi/toml v1.2.1/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=