diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..11c1337
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,6 @@
+module github.com/zhutik/adyen-api-go
+
+require (
+	github.com/google/go-querystring v1.0.0
+	github.com/joho/godotenv v1.3.0
+)
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..e5e19a2
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,4 @@
+github.com/google/go-querystring v1.0.0 h1:Xkwi/a1rcvNg1PPYe5vI8GbeBY/jrVuDX5ASuANWTrk=
+github.com/google/go-querystring v1.0.0/go.mod h1:odCYkC5MyYFN7vkCjXpyrEuKhc/BUO6wN/zVPAxq5ck=
+github.com/joho/godotenv v1.3.0 h1:Zjp+RcGpHhGlrMbJzXTrZZPrWj+1vfm90La1wgB6Bhc=
+github.com/joho/godotenv v1.3.0/go.mod h1:7hK45KPybAkOC6peb+G5yklZfMxEjkZhHbwpqxOKXbg=