diff --git a/Dockerfile b/Dockerfile
index b9b6f40..255e520 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,7 +6,7 @@ LABEL HubImageName="wollud1969/httpdispatcher"
 
 RUN \
   apt update && \
-  apt install -y curl && \
+  apt install -y ca-certificates curl && \
   sed -i \
       -e 's,^#\(LoadModule proxy_module modules/mod_proxy.so\),\1,' \
       -e 's,^#\(LoadModule proxy_http_module modules/mod_proxy_http.so\),\1,' \