diff --git a/package.json b/package.json
index 394d3966..31c876b6 100644
--- a/package.json
+++ b/package.json
@@ -67,9 +67,11 @@
       "npm:dropkickjs@2.1.8": {
         "format": "global"
       },
-      "npm:openapi-sampler@0.1.2": {
-        "main": "src/openapi-sampler",
-        "format": "esm"
+      "npm:json-schema-ref-parser@3.1.2": {
+        "map": {
+          "http": "stream-http",
+          "https": "stream-http"
+        }
       }
     }
   },
diff --git a/system.config.js b/system.config.js
index 7ca59a8b..4b250928 100644
--- a/system.config.js
+++ b/system.config.js
@@ -586,8 +586,6 @@ System.config({
       "es6-promise": "npm:es6-promise@3.2.1",
       "events": "github:jspm/nodelibs-events@0.1.1",
       "fs": "github:jspm/nodelibs-fs@0.1.2",
-      "http": "github:jspm/nodelibs-http@1.7.1",
-      "https": "github:jspm/nodelibs-https@0.1.0",
       "js-yaml": "npm:js-yaml@3.6.1",
       "ono": "npm:ono@2.2.1",
       "process": "github:jspm/nodelibs-process@0.1.2",