diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 08e62f9..22df8f4 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout the source code
-        uses: actions/checkout@main
+        uses: actions/checkout@v7
 
       - name: Install Rust stable
         run: |
@@ -29,6 +29,19 @@ jobs:
       - name: Run clippy
         run: cargo clippy --all --all-features -- -Dwarnings
 
+  msrv:
+    name: MSRV (Rust 1.89)
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Checkout the source code
+        uses: actions/checkout@v7
+
+      - name: Install Rust 1.89
+        run: rustup toolchain install --profile minimal 1.89
+
+      - name: Check with MSRV
+        run: cargo +1.89 check --workspace --all-targets --all-features
+
   test:
     name: Test
     runs-on: ${{ matrix.os }}
@@ -53,7 +66,7 @@ jobs:
             docker_runtime: runsc
     steps:
       - name: Checkout the source code
-        uses: actions/checkout@main
+        uses: actions/checkout@v7
 
       - name: Install Rust stable
         run: |
diff --git a/src/cmd/sandbox/docker.rs b/src/cmd/sandbox/docker.rs
index e43653d..d914de1 100644
--- a/src/cmd/sandbox/docker.rs
+++ b/src/cmd/sandbox/docker.rs
@@ -472,10 +472,10 @@ mod tests {
         let candidates = parse(["7:memory:/docker/v1", "0::/docker/v2"]);
 
         let chosen = HostCgroup::choose_usable(candidates, |path| {
-            path == "/sys/fs/cgroup/memory/docker/v1/memory.max_usage_in_bytes"
-                || path == "/sys/fs/cgroup/memory/docker/v1/memory.oom_control"
-                || path == "/sys/fs/cgroup/docker/v2/memory.peak"
-                || path == "/sys/fs/cgroup/docker/v2/memory.events"
+            path == Path::new("/sys/fs/cgroup/memory/docker/v1/memory.max_usage_in_bytes")
+                || path == Path::new("/sys/fs/cgroup/memory/docker/v1/memory.oom_control")
+                || path == Path::new("/sys/fs/cgroup/docker/v2/memory.peak")
+                || path == Path::new("/sys/fs/cgroup/docker/v2/memory.events")
         })
         .unwrap();
 
@@ -494,8 +494,8 @@ mod tests {
         let candidates = parse(["7:memory:/docker/v1", "0::/docker/v2"]);
 
         let chosen = HostCgroup::choose_usable(candidates, |path| {
-            path == "/sys/fs/cgroup/docker/v2/memory.peak"
-                || path == "/sys/fs/cgroup/docker/v2/memory.events"
+            path == Path::new("/sys/fs/cgroup/docker/v2/memory.peak")
+                || path == Path::new("/sys/fs/cgroup/docker/v2/memory.events")
         })
         .unwrap();