diff --git a/stunnel/Dockerfile b/stunnel/Dockerfile
index 76eeaf69b..6d1237b4e 100644
--- a/stunnel/Dockerfile
+++ b/stunnel/Dockerfile
@@ -6,7 +6,7 @@ FROM alpine:3
 
 MAINTAINER EasyPi Software Foundation
 
-RUN apk add --no-cache stunnel libressl
+RUN apk add --no-cache stunnel libressl openssl
 
 COPY docker-entrypoint.sh /entrypoint.sh