diff --git a/.github/workflows/ci-workflow.yml b/.github/workflows/ci-workflow.yml
index b441d150fa..0ca6f729f8 100644
--- a/.github/workflows/ci-workflow.yml
+++ b/.github/workflows/ci-workflow.yml
@@ -99,7 +99,7 @@ jobs:
         shell: cmd
         run: |
           call "C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Auxiliary\Build\vcvars64.bat"
-          make test NUM_THREADS=24
+          make test NUM_THREADS=18
 
   clang-formatting-check:
     name: clang-format check