diff --git a/.circleci/config.yml b/.circleci/config.yml
index df3a5dc08627e2..0710cceb025d03 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -328,6 +328,7 @@ jobs:
             pnpm --filter @mui/material typescript:module-augmentation
             pnpm --filter @mui/base typescript:module-augmentation
             pnpm --filter @mui/joy typescript:module-augmentation
+            pnpm --filter @mui/system typescript:module-augmentation
       - run:
           name: Diff declaration files
           command: |