diff --git a/apache/docker-entrypoint.sh b/apache/docker-entrypoint.sh
index b92388c7..c7093b59 100755
--- a/apache/docker-entrypoint.sh
+++ b/apache/docker-entrypoint.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 set -e
 
 if [ ! -e piwik.php ]; then
diff --git a/docker-entrypoint.sh b/docker-entrypoint.sh
index b92388c7..c7093b59 100755
--- a/docker-entrypoint.sh
+++ b/docker-entrypoint.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 set -e
 
 if [ ! -e piwik.php ]; then
diff --git a/fpm/docker-entrypoint.sh b/fpm/docker-entrypoint.sh
index b92388c7..c7093b59 100755
--- a/fpm/docker-entrypoint.sh
+++ b/fpm/docker-entrypoint.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 set -e
 
 if [ ! -e piwik.php ]; then