diff --git a/stunnel/docker-entrypoint.sh b/stunnel/docker-entrypoint.sh
index de0c8ef..58a12a4 100755
--- a/stunnel/docker-entrypoint.sh
+++ b/stunnel/docker-entrypoint.sh
@@ -18,7 +18,7 @@ _EOF_
 
 if ! [ -f stunnel.pem ]
 then
-    openssl req -x509 -nodes -newkey rsa:2048 -days 3650 -subj '/CN=stunnel' \
+    libressl req -x509 -nodes -newkey rsa:2048 -days 3650 -subj '/CN=stunnel' \
                 -keyout stunnel.pem -out stunnel.pem
     chmod 600 stunnel.pem
 fi