diff --git a/Cargo.toml b/Cargo.toml
index 6b6882a8c..0c935517b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -86,3 +86,7 @@ members = [
   "crossbeam-skiplist",
   "crossbeam-utils",
 ]
+
+[patch.crates-io]
+# https://github.com/matklad/once_cell/pull/185
+once_cell = { git = "https://github.com/saethlin/once_cell.git", rev = "4aa5ac4aa30b9eed4a0848f3ad22a5eeb025760d" }
diff --git a/ci/miri.sh b/ci/miri.sh
index 2ac6814f1..1e9dde6f4 100755
--- a/ci/miri.sh
+++ b/ci/miri.sh
@@ -9,24 +9,24 @@ echo
 
 export RUSTFLAGS="${RUSTFLAGS:-} -Z randomize-layout"
 
-MIRIFLAGS="-Zmiri-symbolic-alignment-check -Zmiri-disable-isolation" \
+MIRIFLAGS="-Zmiri-strict-provenance -Zmiri-symbolic-alignment-check -Zmiri-disable-isolation" \
     cargo miri test \
     -p crossbeam-queue \
     -p crossbeam-utils 2>&1 | ts -i '%.s  '
 
 # -Zmiri-ignore-leaks is needed because we use detached threads in tests/docs: https://github.com/rust-lang/miri/issues/1371
-MIRIFLAGS="-Zmiri-symbolic-alignment-check -Zmiri-disable-isolation -Zmiri-ignore-leaks" \
+MIRIFLAGS="-Zmiri-strict-provenance -Zmiri-symbolic-alignment-check -Zmiri-disable-isolation -Zmiri-ignore-leaks" \
     cargo miri test \
     -p crossbeam-channel 2>&1 | ts -i '%.s  '
 
 # -Zmiri-disable-stacked-borrows is needed for https://github.com/crossbeam-rs/crossbeam/issues/545
-MIRIFLAGS="-Zmiri-symbolic-alignment-check -Zmiri-disable-isolation -Zmiri-disable-stacked-borrows" \
+MIRIFLAGS="-Zmiri-strict-provenance -Zmiri-symbolic-alignment-check -Zmiri-disable-isolation -Zmiri-disable-stacked-borrows" \
     cargo miri test \
     -p crossbeam-epoch 2>&1 | ts -i '%.s  '
 
 # -Zmiri-ignore-leaks is needed for https://github.com/crossbeam-rs/crossbeam/issues/614
 # -Zmiri-disable-stacked-borrows is needed for https://github.com/crossbeam-rs/crossbeam/issues/545
-MIRIFLAGS="-Zmiri-symbolic-alignment-check -Zmiri-disable-isolation -Zmiri-disable-stacked-borrows -Zmiri-ignore-leaks" \
+MIRIFLAGS="-Zmiri-strict-provenance -Zmiri-symbolic-alignment-check -Zmiri-disable-isolation -Zmiri-disable-stacked-borrows -Zmiri-ignore-leaks" \
     cargo miri test \
     -p crossbeam-skiplist 2>&1 | ts -i '%.s  '
 
@@ -34,11 +34,11 @@ MIRIFLAGS="-Zmiri-symbolic-alignment-check -Zmiri-disable-isolation -Zmiri-disab
 # -Zmiri-compare-exchange-weak-failure-rate=0.0 is needed because some sequential tests (e.g.,
 # doctest of Stealer::steal) incorrectly assume that sequential weak CAS will never fail.
 # -Zmiri-preemption-rate=0 is needed because this code technically has UB and Miri catches that.
-MIRIFLAGS="-Zmiri-symbolic-alignment-check -Zmiri-disable-stacked-borrows -Zmiri-compare-exchange-weak-failure-rate=0.0 -Zmiri-preemption-rate=0" \
+MIRIFLAGS="-Zmiri-strict-provenance -Zmiri-symbolic-alignment-check -Zmiri-disable-stacked-borrows -Zmiri-compare-exchange-weak-failure-rate=0.0 -Zmiri-preemption-rate=0" \
     cargo miri test \
     -p crossbeam-deque 2>&1 | ts -i '%.s  '
 
 # -Zmiri-disable-stacked-borrows is needed for https://github.com/crossbeam-rs/crossbeam/issues/545
-MIRIFLAGS="-Zmiri-symbolic-alignment-check -Zmiri-disable-stacked-borrows" \
+MIRIFLAGS="-Zmiri-strict-provenance -Zmiri-symbolic-alignment-check -Zmiri-disable-stacked-borrows" \
     cargo miri test \
     -p crossbeam 2>&1 | ts -i '%.s  '