diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f0bf2cf0b..df34727cf 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,7 +17,8 @@ jobs:
         version:
 #          - '1.9' # Replace this with the minimum Julia version that your package supports. E.g. if your package requires Julia 1.5 or higher, change this to '1.5'.
           - '1'   # Leave this line unchanged. '1' will automatically expand to the latest stable 1.x release of Julia.
-          - 'nightly'
+#          - 'nightly'
+          - 'pre'
         os:
           - ubuntu-latest
           - windows-latest
@@ -53,8 +54,8 @@ jobs:
             ${{ runner.os }}-
       - uses: julia-actions/julia-buildpkg@v1
       - uses: julia-actions/julia-runtest@v1
-        env:
-          JULIA_NUM_THREADS: 4
+        # env:
+        #   JULIA_NUM_THREADS: 4
       - uses: julia-actions/julia-processcoverage@v1
       - uses: codecov/codecov-action@v4
   docs: