diff --git a/flake.nix b/flake.nix
--- a/flake.nix
+++ b/flake.nix
@@ -54,7 +54,7 @@
     inherit (gitignore.lib) gitignoreSource;
   in {
     overlays.default = final: prev: let
-      goModHash = "sha256-ZckpIPqFk7/XBiEJUbmrAzdjAxV62hv896xqAXF2aZs=";
+      goModHash = "sha256-QPyeKKr7YMblwicQNemu3OamXwg7fVie6/IY10vQCl4=";
       appviewDeps = {
         inherit htmx-src lucide-src inter-fonts-src ibm-plex-mono-src goModHash gitignoreSource;
       };
diff --git a/crypto/verify.go b/crypto/verify.go
--- a/crypto/verify.go
+++ b/crypto/verify.go
@@ -50,7 +50,9 @@
 	payload := strings.Builder{}
 
 	fmt.Fprintf(&payload, "tree %s\n", commit.Commit.Tree)
-	fmt.Fprintf(&payload, "parent %s\n", commit.Commit.Parent)
+	if commit.Commit.Parent != "" {
+		fmt.Fprintf(&payload, "parent %s\n", commit.Commit.Parent)
+	}
 	fmt.Fprintf(&payload, "author %s\n", author.String())
 	fmt.Fprintf(&payload, "committer %s\n", committer.String())
 	if commit.Commit.ChangedId != "" {