diff --git a/source/debian/postinst b/source/debian/postinst
index 3c97ce3d08328c55d9269c1efd30abfeba0122fd..27680f40fefc46c795dfb1c0c74ab7cfeea867b4 100755
--- a/source/debian/postinst
+++ b/source/debian/postinst
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 set -e
 
diff --git a/source/debian/postrm b/source/debian/postrm
index bc690925c99e3b3b0049c33c2aa2f6d12dd853f9..b040d809209f0511205390dc3c06f6ccbd4c2c86 100755
--- a/source/debian/postrm
+++ b/source/debian/postrm
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 set -e