diff --git a/packages/@glimmer/dom-change-list/package.json b/packages/@glimmer/dom-change-list/package.json
index eab7733fa2..fadc973a65 100644
--- a/packages/@glimmer/dom-change-list/package.json
+++ b/packages/@glimmer/dom-change-list/package.json
@@ -11,7 +11,12 @@
     "exports": {
       ".": {
         "types": "./dist/dev/index.d.ts",
-        "development": {}
+        "development": {
+          "require": "./dist/dev/index.cjs",
+          "import": "./dist/dev/index.js"
+        },
+        "require": "./dist/dev/index.cjs",
+        "import": "./dist/prod/index.js"
       }
     },
     "main": null,
diff --git a/packages/@glimmer/encoder/package.json b/packages/@glimmer/encoder/package.json
index e01eccbad6..fd76196c27 100644
--- a/packages/@glimmer/encoder/package.json
+++ b/packages/@glimmer/encoder/package.json
@@ -11,7 +11,12 @@
     "exports": {
       ".": {
         "types": "./dist/dev/index.d.ts",
-        "development": {}
+        "development": {
+          "require": "./dist/dev/index.cjs",
+          "import": "./dist/dev/index.js"
+        },
+        "require": "./dist/dev/index.cjs",
+        "import": "./dist/prod/index.js"
       }
     },
     "main": null,