diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ce6932b..daf9223 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -66,6 +66,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest]
+        toolchain: [stable, nightly]
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v3
@@ -76,7 +77,7 @@ jobs:
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: stable
+          toolchain: ${{ matrix.toolchain }}
       - name: Test std
         uses: actions-rs/cargo@v1
         with:
@@ -87,6 +88,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest]
+        toolchain: [stable, nightly]
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v3
@@ -97,7 +99,7 @@ jobs:
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: stable
+          toolchain: ${{ matrix.toolchain }}
       - name: Test sim
         uses: actions-rs/cargo@v1
         env:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8f79f3b..fb0c8e7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.2.9] - 2022-10-28
+
+### Fixed
+
+- madsim: Fix internal structure change of nightly `std::time::{SystemTime, Interval}`.
+
 ## [0.2.8] - 2022-09-26
 
 ### Added
diff --git a/madsim/Cargo.toml b/madsim/Cargo.toml
index 08e491b..c12479e 100644
--- a/madsim/Cargo.toml
+++ b/madsim/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "madsim"
-version = "0.2.8"
+version = "0.2.9"
 edition = "2021"
 authors = ["Runji Wang <wangrunji0408@163.com>"]
 description = "Deterministic Simulator for distributed systems."
diff --git a/madsim/src/sim/time/system_time.rs b/madsim/src/sim/time/system_time.rs
index ea62427..4dd4e4e 100644
--- a/madsim/src/sim/time/system_time.rs
+++ b/madsim/src/sim/time/system_time.rs
@@ -1,3 +1,5 @@
+use std::time::SystemTime;
+
 /// Override the libc `gettimeofday` function. For `SystemTime` on macOS.
 #[no_mangle]
 #[inline(never)]
@@ -12,7 +14,7 @@ unsafe extern "C" fn gettimeofday(tp: *mut libc::timeval, tz: *mut libc::c_void)
         // inside a madsim context, use the simulated time.
         let dur = time
             .now_time()
-            .duration_since(std::time::SystemTime::UNIX_EPOCH)
+            .duration_since(SystemTime::UNIX_EPOCH)
             .unwrap();
         tp.write(libc::timeval {
             tv_sec: dur.as_secs() as _,
@@ -50,7 +52,7 @@ unsafe extern "C" fn clock_gettime(
             libc::CLOCK_REALTIME | libc::CLOCK_REALTIME_COARSE => {
                 let dur = time
                     .now_time()
-                    .duration_since(std::time::SystemTime::UNIX_EPOCH)
+                    .duration_since(SystemTime::UNIX_EPOCH)
                     .unwrap();
                 tp.write(libc::timespec {
                     tv_sec: dur.as_secs() as _,
@@ -59,7 +61,13 @@ unsafe extern "C" fn clock_gettime(
             }
             // used by Instant
             libc::CLOCK_MONOTONIC | libc::CLOCK_MONOTONIC_RAW | libc::CLOCK_MONOTONIC_COARSE => {
-                tp.write(std::mem::transmute(time.now_instant()));
+                let dur = std::mem::transmute::<_, SystemTime>(time.now_instant())
+                    .duration_since(SystemTime::UNIX_EPOCH)
+                    .unwrap();
+                tp.write(libc::timespec {
+                    tv_sec: dur.as_secs() as _,
+                    tv_nsec: dur.subsec_nanos() as _,
+                });
             }
             _ => panic!("unsupported clockid: {}", clockid),
         }