diff --git a/internal/nix/nix.go b/internal/nix/nix.go
index 8c7a175..99db71d 100644
--- a/internal/nix/nix.go
+++ b/internal/nix/nix.go
@@ -46,7 +46,7 @@ func getExpectedMachineId(path, hostname string) (machineId string, err error) {
 }
 
 func runNixCommand(args []string, stdout, stderr io.Writer) (err error) {
-	commonArgs := []string{"--extra-experimental-features", "nix-command", "--extra-experimental-features", "flakes"}
+	commonArgs := []string{"--extra-experimental-features", "nix-command", "--extra-experimental-features", "flakes", "--accept-flake-config"}
 	args = append(commonArgs, args...)
 	cmdStr := fmt.Sprintf("nix %s", strings.Join(args, " "))
 	logrus.Infof("Running '%s'", cmdStr)