diff --git a/seafile_sync/Dockerfile b/seafile_sync/Dockerfile
index b9931e1..5dc49fd 100644
--- a/seafile_sync/Dockerfile
+++ b/seafile_sync/Dockerfile
@@ -5,5 +5,6 @@ ENV \
     SEAF_SERVER_URL="SERVER_URL" \
     SEAF_USERNAME="USERNAME" \
     SEAF_PASSWORD="PASSWORD" \
-    SEAF_LIBRARY_UUID="LIBRARY_UUID"
+    SEAF_LIBRARY_UUID="LIBRARY_UUID" \
+    SEAF_SKIP_SSL_CERT="SKIP_SSL_CERT"