diff --git a/.github/workflows/codspeed.yml b/.github/workflows/codspeed.yml
index 307ef17b..ed4ac47f 100644
--- a/.github/workflows/codspeed.yml
+++ b/.github/workflows/codspeed.yml
@@ -31,8 +31,8 @@ jobs:
       - uses: taiki-e/install-action@16b05812d776ae1dfaabc8277e421fb6d2506419 # v2.82.7
         with:
           tool: cargo-codspeed
-      - run: cargo codspeed build -m simulation -p peryx-ecosystem-pypi -p peryx-ecosystem-oci --bench operations
+      - run: cargo codspeed build -m walltime -p peryx-ecosystem-pypi -p peryx-ecosystem-oci --bench operations
       - uses: CodSpeedHQ/action@a4a36bb07c0638b0b4ca52bf1f3dad1b4289e52f # v4.18.1
         with:
-          mode: simulation
+          mode: walltime
           run: cargo codspeed run