diff --git a/Dockerfile b/Dockerfile
index d9b9fc2..9ce0f61 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -21,8 +21,7 @@ RUN ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
 
 COPY ./dc3/nginx/ /etc/nginx/
 COPY ./dist/ /usr/share/nginx/html/dc3/demo/
-COPY ./dc3/dependencies/ssl/ /etc/ssl/
-COPY ./dc3/dependencies/conf.crt/ /etc/nginx/conf.crt/
+COPY ./dc3/dependencies/conf.crt/ /etc/letsencrypt/live/
 
 EXPOSE 80 443
 VOLUME /var/log/nginx
diff --git a/dc3/dependencies/ssl/certs/dhparam.pem b/dc3/dependencies/ssl/certs/dhparam.pem
deleted file mode 100644
index 6ef60d7..0000000
--- a/dc3/dependencies/ssl/certs/dhparam.pem
+++ /dev/null
@@ -1,8 +0,0 @@
------BEGIN DH PARAMETERS-----
-MIIBCAKCAQEAsp+BdCoH3P0L+q1Ew8L5Xt+2FvxlA+Fk9IXEHPEJszU/BDos3BEd
-3V7jlmR/WZOJmwnjbyS+P/xI4fprQFZUhZSZPvotlGnUrZbwcPUDtqR7ELnrGFlt
-YnUKMAVBSDCYsqVncxfoaEYVEG1Z64dwP4R4EFO600Wl7k9ympIYp6DXh96nRi8N
-4aeZ0Dsm/JG+ymnEgG6W3alN7ACgd+Lt/UlxmxzUf+mp4RRofiY4jyQe+WxeTzkc
-3j0eZ11Z3vbUz2FmH/xXYsH8DFEHRF3sayLPZeg/hXlL14ckYnCG3ywhNRBZWu/h
-ofNGWs1RF2n+uaNlwSbSxb408FK7kFS2wwIBAg==
------END DH PARAMETERS-----
diff --git a/dc3/nginx/conf.d/default.conf b/dc3/nginx/conf.d/default.conf
index af28347..0d9b69a 100644
--- a/dc3/nginx/conf.d/default.conf
+++ b/dc3/nginx/conf.d/default.conf
@@ -19,8 +19,8 @@ server {
     ssl_protocols              TLSv1 TLSv1.1 TLSv1.2;
     ssl_ciphers                HIGH:!aNULL:!MD5;
 
-    ssl_certificate            /etc/nginx/conf.crt/dc3.site/fullchain.pem;
-    ssl_certificate_key        /etc/nginx/conf.crt/dc3.site/privkey.pem;
+    ssl_certificate            /etc/letsencrypt/live/dc3.site/fullchain.pem;
+    ssl_certificate_key        /etc/letsencrypt/live/dc3.site/privkey.pem;
 
     rewrite                    ^/$ /dc3/demo permanent;