diff --git a/scripts/serve-frank-secondary.sh b/scripts/serve-frank-secondary.sh
index 03c939f..864d983 100755
--- a/scripts/serve-frank-secondary.sh
+++ b/scripts/serve-frank-secondary.sh
@@ -1,3 +1,4 @@
+#!/usr/bin/env bash
 # Serve HauhauCS/Qwen3.5-9B-Uncensored-HauhauCS-Aggressive (Q6_K) as
 # frank-secondary on Dankclaw's RTX 3090 via llama.cpp (master build, CUDA sm_86).
 #