diff --git a/verify-coverage-mutants.fsx b/verify-coverage-mutants.fsx
old mode 100644
new mode 100755
index 0d775d0..b3074ba
--- a/verify-coverage-mutants.fsx
+++ b/verify-coverage-mutants.fsx
@@ -1,3 +1,4 @@
+#!/usr/bin/env -S dotnet fsi
 open System
 open System.IO
 open System.Reflection