diff --git a/.github/workflows/dev.yml b/.github/workflows/dev.yml
index c9a809d8..b6bcb688 100644
--- a/.github/workflows/dev.yml
+++ b/.github/workflows/dev.yml
@@ -197,14 +197,15 @@ jobs:
 
   system-tests:
     needs: build-system-tests-artifact
-    uses: DataDog/system-tests/.github/workflows/system-tests.yml@main
+    uses: DataDog/system-tests/.github/workflows/system-tests.yml@1e5d6b7096279ca43ce4826fda3cc805635b63c1
     secrets:
       TEST_OPTIMIZATION_API_KEY: ${{ secrets.DD_CI_VIS_API_KEY }}
     permissions:
       contents: read
-      packages: write
+      id-token: write
     with:
       library: cpp
+      ref: 1e5d6b7096279ca43ce4826fda3cc805635b63c1
       binaries_artifact: system_tests_binaries
       parametric_job_count: 8  # dedicated parameter to speed up parametric job
       scenarios: PARAMETRIC