diff --git a/flakes/manual.toml b/flakes/manual.toml
index afbd023..22e1611 100644
--- a/flakes/manual.toml
+++ b/flakes/manual.toml
@@ -18,6 +18,11 @@ type = "github"
 owner = "ngi-nix"
 repo = "openpgp-ca"
 
+[[sources]]
+type = "github"
+owner = "fort-nix"
+repo = "nix-bitcoin"
+
 [[sources]]
 type = "gitlab"
 owner = "pi-lar"