diff --git a/packages/cli/src/config/rollup.config.js b/packages/cli/src/config/rollup.config.js
index 06ca8248b..f47750fe4 100644
--- a/packages/cli/src/config/rollup.config.js
+++ b/packages/cli/src/config/rollup.config.js
@@ -121,6 +121,7 @@ const getRollupConfig = async (compilation) => {
   }).flat();
 
   return [{
+    preserveEntrySignatures: 'strict', // https://github.com/ProjectEvergreen/greenwood/pull/990
     input,
     output: { 
       dir: outputDir,