diff --git a/flakes/manual.toml b/flakes/manual.toml
index 8174e45..e919301 100644
--- a/flakes/manual.toml
+++ b/flakes/manual.toml
@@ -109,6 +109,11 @@ type = "github"
 owner = "juliosueiras-nix"
 repo = "nix-security"
 
+[[sources]]
+type = "github"
+owner = "astro"
+repo = "microvm.nix"
+
 [[sources]]
 type = "github"
 owner = "input-output-hk"