diff --git a/package-overrides/github/brianreavis/sifter.js@0.4.1.json b/package-overrides/github/brianreavis/sifter.js@0.4.1.json
index 0de5755..7d2075f 100644
--- a/package-overrides/github/brianreavis/sifter.js@0.4.1.json
+++ b/package-overrides/github/brianreavis/sifter.js@0.4.1.json
@@ -4,5 +4,11 @@
   },
   "main": "sifter",
   "registry": "jspm",
-  "dependencies": {}
+  "dependencies": {},
+  "format": "global",
+  "shim": {
+    "sifter": {
+      "exports": "Sifter"
+    }
+  }
 }
diff --git a/package-overrides/npm/microplugin@0.0.3.json b/package-overrides/npm/microplugin@0.0.3.json
index bb6975c..99b7391 100644
--- a/package-overrides/npm/microplugin@0.0.3.json
+++ b/package-overrides/npm/microplugin@0.0.3.json
@@ -1,5 +1,10 @@
 {
   "directories": {
     "lib": "src"
+  },
+  "shim": {
+    "microplugin": {
+      "exports": "MicroPlugin"
+    }
   }
 }