diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index cf7b6e3cb40..d6a6c2acc86 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -551,7 +551,6 @@ jobs:
           echo "OPENCLAW_VITEST_MAX_WORKERS=2" >> "$GITHUB_ENV"
           if [ "$TASK" = "test" ]; then
             echo "OPENCLAW_TEST_PROJECTS_LEAF_SHARDS=1" >> "$GITHUB_ENV"
-            echo "OPENCLAW_TEST_PROJECTS_PARALLEL=6" >> "$GITHUB_ENV"
             echo "OPENCLAW_TEST_SKIP_FULL_EXTENSIONS_SHARD=1" >> "$GITHUB_ENV"
           fi
           if [ "$TASK" = "channels" ]; then