diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6580817..2f4c906 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -38,7 +38,7 @@ jobs:
       - uses: dtolnay/rust-toolchain@miri
       - run: cargo miri test
         env:
-          MIRIFLAGS: -Zmiri-tag-raw-pointers
+          MIRIFLAGS: -Zmiri-strict-provenance
 
   clippy:
     name: Clippy