diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..7df46f4
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,5 @@
+module github.com/go-telegram-bot-api/telegram-bot-api
+
+go 1.12
+
+require github.com/technoweenie/multipartstreamer v1.0.1
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..8660600
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,2 @@
+github.com/technoweenie/multipartstreamer v1.0.1 h1:XRztA5MXiR1TIRHxH2uNxXxaIkKQDeX7m2XsSOlQEnM=
+github.com/technoweenie/multipartstreamer v1.0.1/go.mod h1:jNVxdtShOxzAsukZwTSw6MDx5eUJoiEBsSvzDU9uzog=