diff --git a/ci/miri.sh b/ci/miri.sh
index f4af1a797..8075849a0 100755
--- a/ci/miri.sh
+++ b/ci/miri.sh
@@ -5,30 +5,35 @@ cd "$(dirname "$0")"/..
 
 export RUSTFLAGS="${RUSTFLAGS:-} -Z randomize-layout"
 
-MIRIFLAGS="-Zmiri-strict-provenance -Zmiri-symbolic-alignment-check -Zmiri-disable-isolation" \
+# TODO: remove -Zmiri-disable-weak-memory-emulation once https://github.com/rust-lang/miri/issues/2223 fixed.
+MIRIFLAGS="-Zmiri-strict-provenance -Zmiri-symbolic-alignment-check -Zmiri-disable-isolation -Zmiri-disable-weak-memory-emulation" \
     cargo miri test \
     -p crossbeam-queue \
     -p crossbeam-utils
 
 # -Zmiri-ignore-leaks is needed because we use detached threads in tests/docs: https://github.com/rust-lang/miri/issues/1371
-MIRIFLAGS="-Zmiri-strict-provenance -Zmiri-symbolic-alignment-check -Zmiri-disable-isolation -Zmiri-ignore-leaks" \
+# TODO: remove -Zmiri-disable-weak-memory-emulation once https://github.com/rust-lang/miri/issues/2223 fixed.
+MIRIFLAGS="-Zmiri-strict-provenance -Zmiri-symbolic-alignment-check -Zmiri-disable-isolation -Zmiri-disable-weak-memory-emulation -Zmiri-ignore-leaks" \
     cargo miri test \
     -p crossbeam-channel
 
 # -Zmiri-ignore-leaks is needed for https://github.com/crossbeam-rs/crossbeam/issues/579
 # -Zmiri-disable-stacked-borrows is needed for https://github.com/crossbeam-rs/crossbeam/issues/545
-MIRIFLAGS="-Zmiri-check-number-validity -Zmiri-symbolic-alignment-check -Zmiri-disable-isolation -Zmiri-disable-stacked-borrows -Zmiri-ignore-leaks" \
+# TODO: remove -Zmiri-disable-weak-memory-emulation once https://github.com/rust-lang/miri/issues/2223 fixed.
+MIRIFLAGS="-Zmiri-check-number-validity -Zmiri-symbolic-alignment-check -Zmiri-disable-isolation -Zmiri-disable-stacked-borrows -Zmiri-disable-weak-memory-emulation -Zmiri-ignore-leaks" \
     cargo miri test \
     -p crossbeam-epoch \
     -p crossbeam-skiplist
 
 # -Zmiri-ignore-leaks is needed for https://github.com/crossbeam-rs/crossbeam/issues/579
 # -Zmiri-disable-stacked-borrows is needed for https://github.com/crossbeam-rs/crossbeam/issues/545
-MIRIFLAGS="-Zmiri-check-number-validity -Zmiri-symbolic-alignment-check -Zmiri-disable-stacked-borrows -Zmiri-ignore-leaks -Zmiri-compare-exchange-weak-failure-rate=0.0" \
+# TODO: remove -Zmiri-disable-weak-memory-emulation once https://github.com/rust-lang/miri/issues/2223 fixed.
+MIRIFLAGS="-Zmiri-check-number-validity -Zmiri-symbolic-alignment-check -Zmiri-disable-stacked-borrows -Zmiri-disable-weak-memory-emulation -Zmiri-ignore-leaks -Zmiri-compare-exchange-weak-failure-rate=0.0" \
     cargo miri test \
     -p crossbeam-deque
 
 # -Zmiri-ignore-leaks is needed for https://github.com/crossbeam-rs/crossbeam/issues/579
-MIRIFLAGS="-Zmiri-check-number-validity -Zmiri-symbolic-alignment-check -Zmiri-ignore-leaks" \
+# TODO: remove -Zmiri-disable-weak-memory-emulation once https://github.com/rust-lang/miri/issues/2223 fixed.
+MIRIFLAGS="-Zmiri-check-number-validity -Zmiri-symbolic-alignment-check -Zmiri-disable-weak-memory-emulation -Zmiri-ignore-leaks" \
     cargo miri test \
     -p crossbeam
diff --git a/crossbeam-channel/CHANGELOG.md b/crossbeam-channel/CHANGELOG.md
index 5ee19e9b4..2f627cf26 100644
--- a/crossbeam-channel/CHANGELOG.md
+++ b/crossbeam-channel/CHANGELOG.md
@@ -1,3 +1,7 @@
+# Version 0.5.5
+
+- Replace Spinlock with Mutex. (#835)
+
 # Version 0.5.4
 
 - Workaround a bug in upstream related to TLS access on AArch64 Linux. (#802)
diff --git a/crossbeam-channel/Cargo.toml b/crossbeam-channel/Cargo.toml
index 647bec394..344092c03 100644
--- a/crossbeam-channel/Cargo.toml
+++ b/crossbeam-channel/Cargo.toml
@@ -4,7 +4,7 @@ name = "crossbeam-channel"
 # - Update CHANGELOG.md
 # - Update README.md
 # - Create "crossbeam-channel-X.Y.Z" git tag
-version = "0.5.4"
+version = "0.5.5"
 edition = "2018"
 rust-version = "1.36"
 license = "MIT OR Apache-2.0"
diff --git a/crossbeam-epoch/CHANGELOG.md b/crossbeam-epoch/CHANGELOG.md
index 1dac1b3e4..2f70edba7 100644
--- a/crossbeam-epoch/CHANGELOG.md
+++ b/crossbeam-epoch/CHANGELOG.md
@@ -1,3 +1,7 @@
+# Version 0.9.9
+
+- Replace lazy_static with once_cell. (#817)
+
 # Version 0.9.8
 
 - Make `Atomic::null()` const function at 1.61+. (#797)
diff --git a/crossbeam-epoch/Cargo.toml b/crossbeam-epoch/Cargo.toml
index fe111e720..a7b2cc933 100644
--- a/crossbeam-epoch/Cargo.toml
+++ b/crossbeam-epoch/Cargo.toml
@@ -4,7 +4,7 @@ name = "crossbeam-epoch"
 # - Update CHANGELOG.md
 # - Update README.md
 # - Create "crossbeam-epoch-X.Y.Z" git tag
-version = "0.9.8"
+version = "0.9.9"
 edition = "2018"
 rust-version = "1.36"
 license = "MIT OR Apache-2.0"
diff --git a/crossbeam-utils/CHANGELOG.md b/crossbeam-utils/CHANGELOG.md
index 5aa350f1c..f2cbf55df 100644
--- a/crossbeam-utils/CHANGELOG.md
+++ b/crossbeam-utils/CHANGELOG.md
@@ -1,3 +1,7 @@
+# Version 0.8.9
+
+- Replace lazy_static with once_cell. (#817)
+
 # Version 0.8.8
 
 - Fix a bug when unstable `loom` support is enabled. (#787)
diff --git a/crossbeam-utils/Cargo.toml b/crossbeam-utils/Cargo.toml
index 5b0849c1a..f91baaea9 100644
--- a/crossbeam-utils/Cargo.toml
+++ b/crossbeam-utils/Cargo.toml
@@ -4,7 +4,7 @@ name = "crossbeam-utils"
 # - Update CHANGELOG.md
 # - Update README.md
 # - Create "crossbeam-utils-X.Y.Z" git tag
-version = "0.8.8"
+version = "0.8.9"
 edition = "2018"
 rust-version = "1.36"
 license = "MIT OR Apache-2.0"