diff --git a/packages/change-case/package.json b/packages/change-case/package.json
index 4342aef7..834f9ae0 100644
--- a/packages/change-case/package.json
+++ b/packages/change-case/package.json
@@ -28,6 +28,7 @@
     "url": "http://blakeembrey.me"
   },
   "type": "module",
+  "main": "./dist/index.js",
   "exports": {
     ".": "./dist/index.js",
     "./keys": "./dist/keys.js"
diff --git a/packages/sponge-case/package.json b/packages/sponge-case/package.json
index f81c9e1e..a34a92cf 100644
--- a/packages/sponge-case/package.json
+++ b/packages/sponge-case/package.json
@@ -28,6 +28,7 @@
     "url": "http://rabins.dev"
   },
   "type": "module",
+  "main": "./dist/index.js",
   "exports": {
     ".": "./dist/index.js"
   },
diff --git a/packages/swap-case/package.json b/packages/swap-case/package.json
index d83ef7db..17dbc2ad 100644
--- a/packages/swap-case/package.json
+++ b/packages/swap-case/package.json
@@ -26,6 +26,7 @@
     "url": "http://blakeembrey.me"
   },
   "type": "module",
+  "main": "./dist/index.js",
   "exports": {
     ".": "./dist/index.js"
   },
diff --git a/packages/title-case/package.json b/packages/title-case/package.json
index d16b2eff..d9445043 100644
--- a/packages/title-case/package.json
+++ b/packages/title-case/package.json
@@ -26,6 +26,7 @@
     "url": "http://blakeembrey.me"
   },
   "type": "module",
+  "main": "./dist/index.js",
   "exports": {
     ".": "./dist/index.js"
   },