diff --git a/src/index.ts b/src/index.ts
index 6daf253..cad927c 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -79,4 +79,6 @@ const PostGraphileConnectionFilterPlugin: Plugin = (builder, configOptions) => {
   PgConnectionArgFilterOperatorsPlugin(builder, options);
 };
 
-export default PostGraphileConnectionFilterPlugin;
+// TODO: In the next major version, change `export =` to `export default`.
+// This will be a breaking change for CommonJS users.
+export = PostGraphileConnectionFilterPlugin;
diff --git a/tsconfig.json b/tsconfig.json
index 2023aee..11c5b7f 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -19,6 +19,7 @@
     "noUnusedParameters": true,
     "noUnusedLocals": true,
     "preserveWatchOutput": true,
+    "esModuleInterop": true,
     "lib": ["es2018", "esnext.asynciterable"]
   },
   "include": ["src/**/*"]