diff --git a/gomod2nix.toml b/gomod2nix.toml
index d0d5a65..0ebadfd 100644
--- a/gomod2nix.toml
+++ b/gomod2nix.toml
@@ -1,3 +1,6 @@
-schema = 1
+schema = 3
 
 [mod]
+  [mod.'github.com/BurntSushi/toml']
+    version = 'v1.6.0'
+    hash = 'sha256-ptdUJvuc21ixeLt+M5way/na3aCnCO4MYHWulWp8NEY='