diff --git a/flake.nix b/flake.nix
index 9846d7f9b4ea065bb775731b6c54856a9c3505b2..567f4b5525f6ee063c60da1f8e075763fd8399d8 100644
--- a/flake.nix
+++ b/flake.nix
@@ -30,13 +30,6 @@           ];
 
           doCheck = false;
 
-          nativeBuildInputs = [pkgs.installShellFiles];
-
-          preInstall = ''
-            go run man.go
-            installManPage git-age.1
-          '';
-
           meta = with pkgs.lib; {
             description = "";
             homepage = "https://git.jojodev.com/jolheiser/git-age";
diff --git a/man.go b/man.go
deleted file mode 100644
index 15ff69a7cf57bd32846c52d6e4836e8a4520cb80..0000000000000000000000000000000000000000
--- a/man.go
+++ /dev/null
@@ -1,25 +0,0 @@
-//go:build man
-
-package main
-
-import (
-	"os"
-
-	"go.jolheiser.com/git-age/cmd"
-)
-
-func main() {
-	fi, err := os.Create("git-age.1")
-	if err != nil {
-		panic(err)
-	}
-	defer fi.Close()
-
-	app := cmd.New()
-	man, err := app.ToMan()
-	if err != nil {
-		panic(err)
-	}
-
-	fi.WriteString(man)
-}