diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c1c1476..212d367 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -73,6 +73,7 @@ jobs:
       - run: cargo miri test --workspace --all-features
         env:
           MIRIFLAGS: -Zmiri-check-number-validity -Zmiri-symbolic-alignment-check -Zmiri-tag-raw-pointers
+          RUSTFLAGS: ${{ env.RUSTFLAGS }} -Z randomize-layout
 
   tidy:
     runs-on: ubuntu-latest