diff --git a/src/update-ts-references.js b/src/update-ts-references.js
index 661ffcb..9aabaf4 100644
--- a/src/update-ts-references.js
+++ b/src/update-ts-references.js
@@ -214,6 +214,10 @@ const execute = async ({
   const packageJson = require(path.join(cwd, PACKAGE_JSON));
 
   let workspaces = packageJson.workspaces;
+  if(workspaces && !Array.isArray(workspaces)) {
+    workspaces = workspaces.packages;
+  }
+
   if (!workspaces && fs.existsSync(path.join(cwd, 'lerna.json'))) {
     const lernaJson = require(path.join(cwd, 'lerna.json'));
     workspaces = lernaJson.packages;
@@ -244,10 +248,6 @@ const execute = async ({
     );
   }
 
-  if (!Array.isArray(workspaces)) {
-    workspaces = workspaces.packages;
-  }
-
   const packageFilePaths = await getAllPackageJsons(workspaces, cwd);
   if (verbose) {
     console.log('packageFilePaths', packageFilePaths);