diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e750d1dc..4baa3f18 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -7,14 +7,17 @@ on:
       - '!gh-pages'
   pull_request:
 
+env:
+  SPARSE_TOOLCHAIN: nightly-2023-02-25
+
 jobs:
   build:
+    if: false
     runs-on: windows-latest
     env:
       RUST_BACKTRACE: 1
       CARGO_REGISTRIES_CRATES_IO_PROTOCOL: sparse
       MINGW_URL: https://ci-mirrors.rust-lang.org/rustc
-      RUSTC_TOOLCHAIN: nightly-2023-02-25
       MIRIFLAGS: -Zmiri-disable-isolation
     strategy:
       matrix:
@@ -29,9 +32,8 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - run: |
-          echo "${RUSTC_TOOLCHAIN}"
-          rustup toolchain install "nightly-2023-02-25-${{ matrix.target }}"
-          rustup default "nightly-2023-02-25-${{ matrix.target }}"
+          rustup toolchain install "${{ env.SPARSE_TOOLCHAIN }}-${{ matrix.target }}"
+          rustup default "${{ env.SPARSE_TOOLCHAIN }}-${{ matrix.target }}"
       - name: Check out MinGW toolchain
         run: |
           set -x
@@ -63,6 +65,27 @@ jobs:
           dir /aL C:\Users
         shell: cmd
 
+  msrv:
+    runs-on: windows-latest
+    # needs: [build]
+    env:
+      CARGO_REGISTRIES_CRATES_IO_PROTOCOL: sparse
+      # add_of_mut! requires for soundness
+      MSRV: 1.51.0
+    steps:
+      - uses: actions/checkout@v3
+      - run: |
+          rustup toolchain install ${{ env.MSRV }}
+          rustup toolchain install ${{ env.SPARSE_TOOLCHAIN }}
+          rustup default ${{ env.MSRV }}
+      - run: |
+          rustup run ${{ env.SPARSE_TOOLCHAIN }} cargo generate-lockfile
+          rustup run ${{ env.SPARSE_TOOLCHAIN }} cargo fetch
+      - run: |
+          cargo build --all-targets --locked
+      - run: |
+          cargo test
+
   rustfmt:
     runs-on: ubuntu-latest
     steps:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index cf6df313..f6aa7fda 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -26,6 +26,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 * `Security` in case of vulnerabilities.
 -->
 
+## [v1.0.0] - 2023-02-26
+### First major version
+The public API of this crate has been unchanged around 3 years without complains.
+It signals that the API is mature enough to be stable for a long time.
+
 ## [v0.2.1] - 2023-02-25
 ### Fixed
 * Fix weird build failure when cross-compiling from non-Windows hosts
@@ -52,6 +57,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 First release
 
+[v1.0.0]: https://github.com/lzutao/junction/compare/v0.2.1...v1.0.0
+[v0.2.1]: https://github.com/lzutao/junction/compare/v0.2.0...v0.2.1
 [v0.2.0]: https://github.com/lzutao/junction/compare/v0.1.0...v0.2.0
 [v0.1.5]: https://github.com/lzutao/junction/compare/v0.1.4...v0.1.5
 [v0.1.4]: https://github.com/lzutao/junction/compare/v0.1.3...v0.1.4
diff --git a/Cargo.toml b/Cargo.toml
index 9b6bbfc6..de93f597 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "junction"
-version = "0.2.1" # Also update `html_root_url` in lib.rs
+version = "1.0.0" # Also update `html_root_url` in lib.rs
 authors = ["Lzu Tao <taolzu@gmail.com>"]
 categories = ["api-bindings", "os::windows-apis"]
 documentation = "https://docs.rs/junction/*/x86_64-pc-windows-msvc/junction/"
diff --git a/README.md b/README.md
index 495267da..2917708e 100644
--- a/README.md
+++ b/README.md
@@ -6,9 +6,9 @@ Library for working with NTFS junctions.
 [![Documentation](https://docs.rs/junction/badge.svg)](https://docs.rs/junction)
 [![Crates.io](https://img.shields.io/crates/v/junction.svg)](https://crates.io/crates/junction)
 
-### Supported Rust versions
+### Minimal Supported Rust versions
 
-Latest stable
+1.48.0
 
 ## All relevant references
 
diff --git a/src/internals.rs b/src/internals.rs
index a8a43dde..71b03863 100644
--- a/src/internals.rs
+++ b/src/internals.rs
@@ -20,8 +20,9 @@ const _: () = {
     use std::alloc::Layout;
     let std_layout = Layout::new::<std::os::windows::io::RawHandle>();
     let winapi_layout = Layout::new::<winapi::um::winnt::HANDLE>();
-    assert!(std_layout.size() == winapi_layout.size());
-    assert!(std_layout.align() == winapi_layout.align());
+    // MSVR(Rust v1.57): use assert! instead
+    [(); 1][!(std_layout.size() == winapi_layout.size()) as usize];
+    [(); 1][!(std_layout.align() == winapi_layout.align()) as usize];
 };
 
 /// This prefix indicates to NTFS that the path is to be treated as a non-interpreted
@@ -141,14 +142,12 @@ pub fn get_target(junction: &Path) -> io::Result<PathBuf> {
     if rdb.reparse_tag == IO_REPARSE_TAG_MOUNT_POINT {
         let offset = rdb.reparse_buffer.substitute_name_offset / WCHAR_SIZE;
         let len = rdb.reparse_buffer.substitute_name_length / WCHAR_SIZE;
-        let mut wide = unsafe {
+        let wide = unsafe {
             let buf = rdb.reparse_buffer.path_buffer.as_ptr().add(offset as usize);
             slice::from_raw_parts(buf, len as usize)
         };
         // In case of "\??\C:\foo\bar"
-        if wide.starts_with(&NON_INTERPRETED_PATH_PREFIX) {
-            wide = &wide[(NON_INTERPRETED_PATH_PREFIX.len())..];
-        }
+        let wide = wide.strip_prefix(&NON_INTERPRETED_PATH_PREFIX).unwrap_or(wide);
         Ok(PathBuf::from(OsString::from_wide(wide)))
     } else {
         Err(io::Error::new(io::ErrorKind::Other, "not a reparse tag mount point"))
diff --git a/src/lib.rs b/src/lib.rs
index 038c5b23..5f86f792 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -10,7 +10,7 @@ if the directory `D:\SYMLINK` specified `C:\WINNT\SYSTEM32` as its target, then
 an application accessing `D:\SYMLINK\DRIVERS` would in reality be accessing
 `C:\WINNT\SYSTEM32\DRIVERS`.
 */
-#![doc(html_root_url = "https://docs.rs/junction/0.2.1")]
+#![doc(html_root_url = "https://docs.rs/junction/~1")]
 #![cfg(windows)]
 #![deny(rust_2018_idioms)]