diff --git a/install-completions b/install-completions
index a39c7878..6d5d197f 100755
--- a/install-completions
+++ b/install-completions
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 # install relevant completions, by sourcing every scriptlet
 # found in a given directory, and symlinking those matching
 # an installed command to another directory