diff --git a/entrypoint.sh b/entrypoint.sh
index ede2cb2..3cd1392 100755
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 die() {
     echo $* >&2
@@ -6,7 +6,7 @@ die() {
 }
 
 # Get latest stage3 tag
-STAGE3_TAG=$(curl -s \
+STAGE3_TAG=$(wget -q -O - \
     http://distfiles.gentoo.org/releases/amd64/autobuilds/latest-stage3-amd64.txt \
     | grep -v "^#" | cut -d ' ' -f 1)