diff --git a/.clippy.toml b/.clippy.toml
index bee70857b..814e40b69 100644
--- a/.clippy.toml
+++ b/.clippy.toml
@@ -1,2 +1,2 @@
-msrv = "1.64.0"
+msrv = "1.70.0"
 cognitive-complexity-threshold = 10
diff --git a/.github/workflows/CICD.yml b/.github/workflows/CICD.yml
index fe72de110..27378cd96 100644
--- a/.github/workflows/CICD.yml
+++ b/.github/workflows/CICD.yml
@@ -11,7 +11,7 @@ env:
   PROJECT_NAME: coreutils
   PROJECT_DESC: "Core universal (cross-platform) utilities"
   PROJECT_AUTH: "uutils"
-  RUST_MIN_SRV: "1.64.0"
+  RUST_MIN_SRV: "1.70.0"
   # * style job configuration
   STYLE_FAIL_ON_FAULT: true ## (bool) fail the build if a style job contains a fault (error or warning); may be overridden on a per-job basis
 
@@ -30,7 +30,7 @@ jobs:
     name: Style/cargo-deny
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: EmbarkStudios/cargo-deny-action@v1
 
   style_deps:
@@ -47,7 +47,7 @@ jobs:
           - { os: macos-latest   , features: "feat_Tier1,feat_require_unix,feat_require_unix_utmpx" }
           - { os: windows-latest , features: feat_os_windows }
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: dtolnay/rust-toolchain@nightly
     ## note: requires 'nightly' toolchain b/c `cargo-udeps` uses the `rustc` '-Z save-analysis' option
     ## * ... ref: <https://github.com/est31/cargo-udeps/issues/73>
@@ -91,7 +91,7 @@ jobs:
         job:
           - { os: ubuntu-latest , features: feat_os_unix }
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: dtolnay/rust-toolchain@master
       with:
         toolchain: stable
@@ -131,7 +131,7 @@ jobs:
     env:
       RUN_FOR: 60
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: dtolnay/rust-toolchain@nightly
     - name: Install `cargo-fuzz`
       run: cargo install cargo-fuzz
@@ -182,7 +182,7 @@ jobs:
           - { os: macos-latest   , features: feat_os_macos }
           - { os: windows-latest , features: feat_os_windows }
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: dtolnay/rust-toolchain@master
       with:
         toolchain: stable
@@ -238,7 +238,7 @@ jobs:
         job:
           - { os: ubuntu-latest , features: feat_os_unix }
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Initialize workflow variables
       id: vars
       shell: bash
@@ -292,7 +292,7 @@ jobs:
 #          - { os: macos-latest   , features: feat_os_macos }
 #          - { os: windows-latest , features: feat_os_windows }
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: dtolnay/rust-toolchain@master
       with:
         toolchain: stable
@@ -345,7 +345,7 @@ jobs:
         job:
           - { os: ubuntu-latest , features: feat_os_unix }
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: dtolnay/rust-toolchain@master
       with:
         toolchain: ${{ env.RUST_MIN_SRV }}
@@ -413,7 +413,7 @@ jobs:
         job:
           - { os: ubuntu-latest , features: feat_os_unix }
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: dtolnay/rust-toolchain@stable
     - uses: Swatinem/rust-cache@v2
     - name: "`cargo update` testing"
@@ -436,7 +436,7 @@ jobs:
         job:
           - { os: ubuntu-latest , features: feat_os_unix }
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: dtolnay/rust-toolchain@stable
     - uses: taiki-e/install-action@nextest
     - uses: Swatinem/rust-cache@v2
@@ -490,7 +490,7 @@ jobs:
           - { os: macos-latest   , features: feat_os_macos }
           - { os: windows-latest , features: feat_os_windows }
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: dtolnay/rust-toolchain@stable
     - uses: taiki-e/install-action@nextest
     - uses: Swatinem/rust-cache@v2
@@ -517,7 +517,7 @@ jobs:
           - { os: macos-latest   , features: feat_os_macos }
           - { os: windows-latest , features: feat_os_windows }
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: dtolnay/rust-toolchain@nightly
     - uses: taiki-e/install-action@nextest
     - uses: Swatinem/rust-cache@v2
@@ -541,7 +541,7 @@ jobs:
         job:
           - { os: ubuntu-latest , features: feat_os_unix }
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: dtolnay/rust-toolchain@stable
     - uses: Swatinem/rust-cache@v2
     - name: Run sccache-cache
@@ -661,7 +661,7 @@ jobs:
           - { os: windows-latest , target: x86_64-pc-windows-gnu       , features: feat_os_windows } ## note: requires rust >= 1.43.0 to link correctly
           - { os: windows-latest , target: x86_64-pc-windows-msvc      , features: feat_os_windows }
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: dtolnay/rust-toolchain@master
       with:
         toolchain: ${{ env.RUST_MIN_SRV }}
@@ -920,7 +920,7 @@ jobs:
       run: |
         ## VARs setup
         echo "TEST_SUMMARY_FILE=busybox-result.json" >> $GITHUB_OUTPUT
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: Swatinem/rust-cache@v2
     - name: Run sccache-cache
       uses: mozilla-actions/sccache-action@v0.0.3
@@ -1000,7 +1000,7 @@ jobs:
         outputs() { step_id="${{ github.action }}"; for var in "$@" ; do echo steps.${step_id}.outputs.${var}="${!var}"; echo "${var}=${!var}" >> $GITHUB_OUTPUT; done; }
         TEST_SUMMARY_FILE="toybox-result.json"
         outputs TEST_SUMMARY_FILE
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: dtolnay/rust-toolchain@master
       with:
         toolchain: ${{ env.RUST_MIN_SRV }}
@@ -1071,7 +1071,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Clone repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Check
         run: npx --yes @taplo/cli fmt --check
@@ -1091,7 +1091,7 @@ jobs:
           - { os: macos-latest   , features: macos, toolchain: nightly }
           - { os: windows-latest , features: windows, toolchain: nightly-x86_64-pc-windows-gnu }
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: dtolnay/rust-toolchain@master
       with:
         toolchain: ${{ matrix.job.toolchain }}
diff --git a/.github/workflows/CheckScripts.yml b/.github/workflows/CheckScripts.yml
index e1b3b24d2..98ae6cb75 100644
--- a/.github/workflows/CheckScripts.yml
+++ b/.github/workflows/CheckScripts.yml
@@ -29,7 +29,7 @@ jobs:
     permissions:
       contents: read
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Run ShellCheck
         uses: ludeeus/action-shellcheck@master
         env:
@@ -50,7 +50,7 @@ jobs:
       contents: write
       pull-requests: write
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Setup shfmt
         uses: mfinelli/setup-shfmt@v2
       - name: Run shfmt
diff --git a/.github/workflows/FixPR.yml b/.github/workflows/FixPR.yml
index 97b0be34a..7f5e5234d 100644
--- a/.github/workflows/FixPR.yml
+++ b/.github/workflows/FixPR.yml
@@ -26,7 +26,7 @@ jobs:
         job:
           - { os: ubuntu-latest , features: feat_os_unix }
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Initialize job variables
       id: vars
       shell: bash
@@ -85,7 +85,7 @@ jobs:
         job:
           - { os: ubuntu-latest , features: feat_os_unix }
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Initialize job variables
       id: vars
       shell: bash
diff --git a/.github/workflows/GnuTests.yml b/.github/workflows/GnuTests.yml
index ccb5a6f74..61f30eba4 100644
--- a/.github/workflows/GnuTests.yml
+++ b/.github/workflows/GnuTests.yml
@@ -55,7 +55,7 @@ jobs:
         TEST_FULL_SUMMARY_FILE='gnu-full-result.json'
         outputs SUITE_LOG_FILE ROOT_SUITE_LOG_FILE TEST_FILESET_PREFIX TEST_FILESET_SUFFIX TEST_LOGS_GLOB TEST_SUMMARY_FILE TEST_FULL_SUMMARY_FILE
     - name: Checkout code (uutil)
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         path: '${{ steps.vars.outputs.path_UUTILS }}'
     - uses: dtolnay/rust-toolchain@master
@@ -66,7 +66,7 @@ jobs:
       with:
         workspaces: "./${{ steps.vars.outputs.path_UUTILS }} -> target"
     - name: Checkout code (GNU coreutils)
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         repository: 'coreutils/coreutils'
         path: '${{ steps.vars.outputs.path_GNU }}'
@@ -307,11 +307,11 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
     - name: Checkout code uutil
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         path: 'uutils'
     - name: Checkout GNU coreutils
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         repository: 'coreutils/coreutils'
         path: 'gnu'
diff --git a/.github/workflows/android.yml b/.github/workflows/android.yml
index a6929b171..5834aceff 100644
--- a/.github/workflows/android.yml
+++ b/.github/workflows/android.yml
@@ -26,7 +26,7 @@ jobs:
     env:
       TERMUX: v0.118.0
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Restore AVD cache
       uses: actions/cache/restore@v3
       id: avd-cache
diff --git a/.github/workflows/freebsd.yml b/.github/workflows/freebsd.yml
index 095ec3230..5af3da320 100644
--- a/.github/workflows/freebsd.yml
+++ b/.github/workflows/freebsd.yml
@@ -30,7 +30,7 @@ jobs:
       SCCACHE_GHA_ENABLED: "true"
       RUSTC_WRAPPER: "sccache"
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: Swatinem/rust-cache@v2
     - name: Run sccache-cache
       uses: mozilla-actions/sccache-action@v0.0.3
@@ -120,7 +120,7 @@ jobs:
       SCCACHE_GHA_ENABLED: "true"
       RUSTC_WRAPPER: "sccache"
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: Swatinem/rust-cache@v2
     - name: Run sccache-cache
       uses: mozilla-actions/sccache-action@v0.0.3
diff --git a/Cargo.lock b/Cargo.lock
index f4885faa0..eb1cdd4b1 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -34,16 +34,15 @@ dependencies = [
 
 [[package]]
 name = "anstream"
-version = "0.3.2"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0ca84f3628370c59db74ee214b3263d58f9aadd9b4fe7e711fd87dc452b7f163"
+checksum = "b1f58811cfac344940f1a400b6e6231ce35171f614f26439e80f8c1465c5cc0c"
 dependencies = [
  "anstyle",
  "anstyle-parse",
  "anstyle-query",
  "anstyle-wincon",
  "colorchoice",
- "is-terminal",
  "utf8parse",
 ]
 
@@ -73,9 +72,9 @@ dependencies = [
 
 [[package]]
 name = "anstyle-wincon"
-version = "1.0.1"
+version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "180abfa45703aebe0093f79badacc01b8fd4ea2e35118747e5811127f926e188"
+checksum = "58f54d10c6dfa51283a066ceab3ec1ab78d13fae00aa49243a45e4571fb79dfd"
 dependencies = [
  "anstyle",
  "windows-sys 0.48.0",
@@ -263,32 +262,31 @@ dependencies = [
 
 [[package]]
 name = "clap"
-version = "4.3.21"
+version = "4.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c27cdf28c0f604ba3f512b0c9a409f8de8513e4816705deb0498b627e7c3a3fd"
+checksum = "6a13b88d2c62ff462f88e4a121f17a82c1af05693a2f192b5c38d14de73c19f6"
 dependencies = [
  "clap_builder",
 ]
 
 [[package]]
 name = "clap_builder"
-version = "4.3.21"
+version = "4.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "08a9f1ab5e9f01a9b81f202e8562eb9a10de70abf9eaeac1be465c28b75aa4aa"
+checksum = "2bb9faaa7c2ef94b2743a21f5a29e6f0010dff4caa69ac8e9d6cf8b6fa74da08"
 dependencies = [
  "anstream",
  "anstyle",
  "clap_lex",
- "once_cell",
  "strsim",
  "terminal_size",
 ]
 
 [[package]]
 name = "clap_complete"
-version = "4.3.0"
+version = "4.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a04ddfaacc3bc9e6ea67d024575fafc2a813027cf374b8f24f7bc233c6b6be12"
+checksum = "586a385f7ef2f8b4d86bddaa0c094794e7ccbfe5ffef1f434fe928143fc783a5"
 dependencies = [
  "clap",
 ]
@@ -389,7 +387,6 @@ dependencies = [
  "filetime",
  "glob",
  "hex-literal",
- "is-terminal",
  "libc",
  "nix",
  "once_cell",
@@ -1030,10 +1027,11 @@ checksum = "d2fabcfbdc87f4758337ca535fb41a6d701b65693ce38287d856d1674551ec9b"
 
 [[package]]
 name = "half"
-version = "2.2.1"
+version = "2.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "02b4af3693f1b705df946e9fe5631932443781d0aabb423b62fcd4d73f6d2fd0"
+checksum = "bc52e53916c08643f1b56ec082790d1e86a32e58dc5268f897f313fbae7b4872"
 dependencies = [
+ "cfg-if",
  "crunchy",
 ]
 
@@ -1138,17 +1136,6 @@ dependencies = [
  "windows-sys 0.48.0",
 ]
 
-[[package]]
-name = "is-terminal"
-version = "0.4.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cb0889898416213fab133e1d33a0e5858a48177452750691bde3666d0fdbaf8b"
-dependencies = [
- "hermit-abi",
- "rustix 0.38.8",
- "windows-sys 0.48.0",
-]
-
 [[package]]
 name = "itertools"
 version = "0.11.0"
@@ -2311,7 +2298,6 @@ name = "uu_cat"
 version = "0.0.21"
 dependencies = [
  "clap",
- "is-terminal",
  "nix",
  "thiserror",
  "uucore",
@@ -2411,7 +2397,6 @@ version = "0.0.21"
 dependencies = [
  "bstr",
  "clap",
- "is-terminal",
  "memchr",
  "uucore",
 ]
@@ -2679,7 +2664,6 @@ dependencies = [
  "chrono",
  "clap",
  "glob",
- "is-terminal",
  "lscolors",
  "number_prefix",
  "once_cell",
@@ -2732,7 +2716,6 @@ version = "0.0.21"
 dependencies = [
  "clap",
  "crossterm",
- "is-terminal",
  "nix",
  "unicode-segmentation",
  "unicode-width",
@@ -2773,7 +2756,6 @@ name = "uu_nohup"
 version = "0.0.21"
 dependencies = [
  "clap",
- "is-terminal",
  "libc",
  "uucore",
 ]
@@ -3072,7 +3054,6 @@ version = "0.0.21"
 dependencies = [
  "clap",
  "fundu",
- "is-terminal",
  "libc",
  "memchr",
  "notify",
@@ -3162,7 +3143,6 @@ name = "uu_tty"
 version = "0.0.21"
 dependencies = [
  "clap",
- "is-terminal",
  "nix",
  "uucore",
 ]
@@ -3331,12 +3311,11 @@ checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
 
 [[package]]
 name = "walkdir"
-version = "2.3.2"
+version = "2.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "808cf2735cd4b6866113f648b791c6adc5714537bc222d9347bb203386ffda56"
+checksum = "d71d857dc86794ca4c280d616f7da00d2dbfd8cd788846559a6813e6aa4b54ee"
 dependencies = [
  "same-file",
- "winapi",
  "winapi-util",
 ]
 
diff --git a/Cargo.toml b/Cargo.toml
index 320aa0f43..dbe5bd10e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,7 +16,7 @@ repository = "https://github.com/uutils/coreutils"
 readme = "README.md"
 keywords = ["coreutils", "uutils", "cross-platform", "cli", "utility"]
 categories = ["command-line-utilities"]
-rust-version = "1.64.0"
+rust-version = "1.70.0"
 edition = "2021"
 
 build = "build.rs"
@@ -268,8 +268,8 @@ chrono = { version = "^0.4.28", default-features = false, features = [
   "alloc",
   "clock",
 ] }
-clap = { version = "4.3", features = ["wrap_help", "cargo"] }
-clap_complete = "4.3"
+clap = { version = "4.4", features = ["wrap_help", "cargo"] }
+clap_complete = "4.4"
 clap_mangen = "0.2"
 compare = "0.1.0"
 coz = { version = "0.1.3" }
@@ -284,9 +284,8 @@ fts-sys = "0.2"
 fundu = "2.0.0"
 gcd = "2.3"
 glob = "0.3.1"
-half = "2.2"
+half = "2.3"
 indicatif = "0.17"
-is-terminal = "0.4.9"
 itertools = "0.11.0"
 libc = "0.2.147"
 lscolors = { version = "0.15.0", default-features = false, features = [
@@ -328,7 +327,7 @@ time = { version = "0.3" }
 unicode-segmentation = "1.10.1"
 unicode-width = "0.1.10"
 utf-8 = "0.7.6"
-walkdir = "2.3"
+walkdir = "2.4"
 winapi-util = "0.1.5"
 windows-sys = { version = "0.48.0", default-features = false }
 xattr = "1.0.1"
@@ -491,7 +490,6 @@ time = { workspace = true, features = ["local-offset"] }
 unindent = "0.2"
 uucore = { workspace = true, features = ["entries", "process", "signals"] }
 walkdir = { workspace = true }
-is-terminal = { workspace = true }
 hex-literal = "0.4.1"
 rstest = { workspace = true }
 
diff --git a/README.md b/README.md
index c5b4609c9..4f341638b 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@
 [![dependency status](https://deps.rs/repo/github/uutils/coreutils/status.svg)](https://deps.rs/repo/github/uutils/coreutils)
 
 [![CodeCov](https://codecov.io/gh/uutils/coreutils/branch/master/graph/badge.svg)](https://codecov.io/gh/uutils/coreutils)
-![MSRV](https://img.shields.io/badge/MSRV-1.64.0-brightgreen)
+![MSRV](https://img.shields.io/badge/MSRV-1.70.0-brightgreen)
 
 </div>
 
@@ -71,7 +71,7 @@ the [coreutils docs](https://github.com/uutils/uutils.github.io) repository.
 ### Rust Version
 
 uutils follows Rust's release channels and is tested against stable, beta and
-nightly. The current Minimum Supported Rust Version (MSRV) is `1.64.0`.
+nightly. The current Minimum Supported Rust Version (MSRV) is `1.70.0`.
 
 ## Building
 
diff --git a/src/uu/cat/Cargo.toml b/src/uu/cat/Cargo.toml
index d67cd1b25..166e1823b 100644
--- a/src/uu/cat/Cargo.toml
+++ b/src/uu/cat/Cargo.toml
@@ -17,7 +17,6 @@ path = "src/cat.rs"
 [dependencies]
 clap = { workspace = true }
 thiserror = { workspace = true }
-is-terminal = { workspace = true }
 uucore = { workspace = true, features = ["fs", "pipes"] }
 
 [target.'cfg(unix)'.dependencies]
diff --git a/src/uu/cat/src/cat.rs b/src/uu/cat/src/cat.rs
index 8ce805251..d49f4aa07 100644
--- a/src/uu/cat/src/cat.rs
+++ b/src/uu/cat/src/cat.rs
@@ -7,9 +7,8 @@
 
 // last synced with: cat (GNU coreutils) 8.13
 use clap::{crate_version, Arg, ArgAction, Command};
-use is_terminal::IsTerminal;
 use std::fs::{metadata, File};
-use std::io::{self, Read, Write};
+use std::io::{self, IsTerminal, Read, Write};
 use thiserror::Error;
 use uucore::display::Quotable;
 use uucore::error::UResult;
diff --git a/src/uu/cut/Cargo.toml b/src/uu/cut/Cargo.toml
index affeb3805..a55ce7d58 100644
--- a/src/uu/cut/Cargo.toml
+++ b/src/uu/cut/Cargo.toml
@@ -19,7 +19,6 @@ clap = { workspace = true }
 uucore = { workspace = true, features = ["ranges"] }
 memchr = { workspace = true }
 bstr = { workspace = true }
-is-terminal = { workspace = true }
 
 [[bin]]
 name = "cut"
diff --git a/src/uu/cut/src/cut.rs b/src/uu/cut/src/cut.rs
index 891281753..4d3145c05 100644
--- a/src/uu/cut/src/cut.rs
+++ b/src/uu/cut/src/cut.rs
@@ -7,9 +7,8 @@
 
 use bstr::io::BufReadExt;
 use clap::{crate_version, Arg, ArgAction, Command};
-use is_terminal::IsTerminal;
 use std::fs::File;
-use std::io::{stdin, stdout, BufReader, BufWriter, Read, Write};
+use std::io::{stdin, stdout, BufReader, BufWriter, IsTerminal, Read, Write};
 use std::path::Path;
 use uucore::display::Quotable;
 use uucore::error::{FromIo, UResult, USimpleError};
diff --git a/src/uu/ls/Cargo.toml b/src/uu/ls/Cargo.toml
index b1114644d..f3fc2eb6b 100644
--- a/src/uu/ls/Cargo.toml
+++ b/src/uu/ls/Cargo.toml
@@ -25,7 +25,6 @@ glob = { workspace = true }
 lscolors = { workspace = true }
 uucore = { workspace = true, features = ["entries", "fs"] }
 once_cell = { workspace = true }
-is-terminal = { workspace = true }
 selinux = { workspace = true, optional = true }
 
 [[bin]]
diff --git a/src/uu/ls/src/ls.rs b/src/uu/ls/src/ls.rs
index 1f5165e83..652b978a5 100644
--- a/src/uu/ls/src/ls.rs
+++ b/src/uu/ls/src/ls.rs
@@ -10,12 +10,11 @@ use clap::{
     crate_version, Arg, ArgAction, Command,
 };
 use glob::{MatchOptions, Pattern};
-use is_terminal::IsTerminal;
 use lscolors::LsColors;
 use number_prefix::NumberPrefix;
 use once_cell::unsync::OnceCell;
-use std::collections::HashSet;
 use std::num::IntErrorKind;
+use std::{collections::HashSet, io::IsTerminal};
 
 #[cfg(windows)]
 use std::os::windows::fs::MetadataExt;
diff --git a/src/uu/more/Cargo.toml b/src/uu/more/Cargo.toml
index ef2240133..bc0f25217 100644
--- a/src/uu/more/Cargo.toml
+++ b/src/uu/more/Cargo.toml
@@ -18,7 +18,6 @@ path = "src/more.rs"
 clap = { workspace = true }
 uucore = { workspace = true }
 crossterm = { workspace = true }
-is-terminal = { workspace = true }
 unicode-width = { workspace = true }
 unicode-segmentation = { workspace = true }
 
diff --git a/src/uu/more/src/more.rs b/src/uu/more/src/more.rs
index 75cf79c07..02ed0feea 100644
--- a/src/uu/more/src/more.rs
+++ b/src/uu/more/src/more.rs
@@ -7,7 +7,7 @@
 
 use std::{
     fs::File,
-    io::{stdin, stdout, BufReader, Read, Stdout, Write},
+    io::{stdin, stdout, BufReader, IsTerminal, Read, Stdout, Write},
     path::Path,
     time::Duration,
 };
@@ -22,7 +22,6 @@ use crossterm::{
     terminal::{self, Clear, ClearType},
 };
 
-use is_terminal::IsTerminal;
 use unicode_segmentation::UnicodeSegmentation;
 use unicode_width::UnicodeWidthStr;
 use uucore::display::Quotable;
diff --git a/src/uu/nohup/Cargo.toml b/src/uu/nohup/Cargo.toml
index 2a454b9f4..9fbf125bf 100644
--- a/src/uu/nohup/Cargo.toml
+++ b/src/uu/nohup/Cargo.toml
@@ -17,7 +17,6 @@ path = "src/nohup.rs"
 [dependencies]
 clap = { workspace = true }
 libc = { workspace = true }
-is-terminal = { workspace = true }
 uucore = { workspace = true, features = ["fs"] }
 
 [[bin]]
diff --git a/src/uu/nohup/src/nohup.rs b/src/uu/nohup/src/nohup.rs
index fdbed9395..c64f7bf71 100644
--- a/src/uu/nohup/src/nohup.rs
+++ b/src/uu/nohup/src/nohup.rs
@@ -6,14 +6,13 @@
 // spell-checker:ignore (ToDO) execvp SIGHUP cproc vprocmgr cstrs homeout
 
 use clap::{crate_version, Arg, ArgAction, Command};
-use is_terminal::IsTerminal;
 use libc::{c_char, dup2, execvp, signal};
 use libc::{SIGHUP, SIG_IGN};
 use std::env;
 use std::ffi::CString;
 use std::fmt::{Display, Formatter};
 use std::fs::{File, OpenOptions};
-use std::io::Error;
+use std::io::{Error, IsTerminal};
 use std::os::unix::prelude::*;
 use std::path::{Path, PathBuf};
 use uucore::display::Quotable;
diff --git a/src/uu/tail/Cargo.toml b/src/uu/tail/Cargo.toml
index 792b7fcf1..5ff532e60 100644
--- a/src/uu/tail/Cargo.toml
+++ b/src/uu/tail/Cargo.toml
@@ -22,7 +22,6 @@ memchr = { workspace = true }
 notify = { workspace = true }
 uucore = { workspace = true }
 same-file = { workspace = true }
-is-terminal = { workspace = true }
 fundu = { workspace = true }
 
 [target.'cfg(windows)'.dependencies]
diff --git a/src/uu/tail/src/args.rs b/src/uu/tail/src/args.rs
index 795652f26..388842a14 100644
--- a/src/uu/tail/src/args.rs
+++ b/src/uu/tail/src/args.rs
@@ -10,9 +10,9 @@ use crate::{parse, platform, Quotable};
 use clap::{crate_version, value_parser};
 use clap::{Arg, ArgAction, ArgMatches, Command};
 use fundu::{DurationParser, SaturatingInto};
-use is_terminal::IsTerminal;
 use same_file::Handle;
 use std::ffi::OsString;
+use std::io::IsTerminal;
 use std::time::Duration;
 use uucore::error::{UResult, USimpleError, UUsageError};
 use uucore::parse_size::{parse_size, ParseSizeError};
diff --git a/src/uu/tty/Cargo.toml b/src/uu/tty/Cargo.toml
index fde233250..917d04c10 100644
--- a/src/uu/tty/Cargo.toml
+++ b/src/uu/tty/Cargo.toml
@@ -17,7 +17,6 @@ path = "src/tty.rs"
 [dependencies]
 clap = { workspace = true }
 nix = { workspace = true, features = ["term"] }
-is-terminal = { workspace = true }
 uucore = { workspace = true, features = ["fs"] }
 
 [[bin]]
diff --git a/src/uu/tty/src/tty.rs b/src/uu/tty/src/tty.rs
index 96d851d37..efda4a7be 100644
--- a/src/uu/tty/src/tty.rs
+++ b/src/uu/tty/src/tty.rs
@@ -8,8 +8,7 @@
 // spell-checker:ignore (ToDO) ttyname filedesc
 
 use clap::{crate_version, Arg, ArgAction, Command};
-use is_terminal::IsTerminal;
-use std::io::Write;
+use std::io::{IsTerminal, Write};
 use std::os::unix::io::AsRawFd;
 use uucore::error::{set_exit_code, UResult};
 use uucore::{format_usage, help_about, help_usage};
diff --git a/src/uu/wc/src/wc.rs b/src/uu/wc/src/wc.rs
index 6d5894db0..663bbda15 100644
--- a/src/uu/wc/src/wc.rs
+++ b/src/uu/wc/src/wc.rs
@@ -702,7 +702,7 @@ fn compute_number_width(inputs: &Inputs, settings: &Settings) -> usize {
             if total == 0 {
                 minimum_width
             } else {
-                let total_width = (1 + ilog10_u64(total))
+                let total_width = (1 + total.ilog10())
                     .try_into()
                     .expect("ilog of a u64 should fit into a usize");
                 max(total_width, minimum_width)
@@ -857,29 +857,3 @@ fn print_stats(
         writeln!(stdout)
     }
 }
-
-// TODO: remove and just use usize::ilog10 once the MSRV is >= 1.67.
-fn ilog10_u64(mut u: u64) -> u32 {
-    if u == 0 {
-        panic!("cannot compute log of 0")
-    }
-    let mut log = 0;
-    if u >= 10_000_000_000 {
-        log += 10;
-        u /= 10_000_000_000;
-    }
-    if u >= 100_000 {
-        log += 5;
-        u /= 100_000;
-    }
-    // Rust's standard library in versions >= 1.67 does something even more clever than this, but
-    // this should work just fine for the time being.
-    log + match u {
-        1..=9 => 0,
-        10..=99 => 1,
-        100..=999 => 2,
-        1000..=9999 => 3,
-        10000..=99999 => 4,
-        _ => unreachable!(),
-    }
-}
diff --git a/src/uu/yes/src/yes.rs b/src/uu/yes/src/yes.rs
index e6868d9d8..a58b73404 100644
--- a/src/uu/yes/src/yes.rs
+++ b/src/uu/yes/src/yes.rs
@@ -58,10 +58,7 @@ fn args_into_buffer<'a>(
     buf: &mut Vec<u8>,
     i: Option<impl Iterator<Item = &'a OsString>>,
 ) -> Result<(), Box<dyn Error>> {
-    // TODO: this should be replaced with let/else once available in the MSRV.
-    let i = if let Some(i) = i {
-        i
-    } else {
+    let Some(i) = i else {
         buf.extend_from_slice(b"y\n");
         return Ok(());
     };
diff --git a/tests/by-util/test_more.rs b/tests/by-util/test_more.rs
index b6ded2298..e80020d39 100644
--- a/tests/by-util/test_more.rs
+++ b/tests/by-util/test_more.rs
@@ -3,7 +3,7 @@
 // For the full copyright and license information, please view the LICENSE
 // file that was distributed with this source code.
 use crate::common::util::TestScenario;
-use is_terminal::IsTerminal;
+use std::io::IsTerminal;
 
 #[test]
 fn test_more_no_arg() {
diff --git a/tests/by-util/test_split.rs b/tests/by-util/test_split.rs
index 965f2733e..053b6f8bf 100644
--- a/tests/by-util/test_split.rs
+++ b/tests/by-util/test_split.rs
@@ -1188,7 +1188,7 @@ fn test_short_combination() {
     assert_eq!(at.read("x00"), "a");
     assert_eq!(at.read("x01"), "b");
     assert_eq!(at.read("x02"), "c");
-    assert_eq!(at.file_exists("x03"), false);
+    assert!(!at.file_exists("x03"));
 }
 
 /// Test for the last effective suffix, ignoring all others - numeric long last
diff --git a/util/build-gnu.sh b/util/build-gnu.sh
index 157265f61..b57b4fe76 100755
--- a/util/build-gnu.sh
+++ b/util/build-gnu.sh
@@ -18,16 +18,17 @@ path_GNU="$(readlink -fm -- "${path_GNU:-${path_UUTILS}/../gnu}")"
 
 ###
 
-# On MacOS there is no system /usr/bin/timeout 
+# On MacOS there is no system /usr/bin/timeout
+
 # and trying to add it to /usr/bin (with symlink of copy binary) will fail unless system integrity protection is disabled (not ideal)
 # ref: https://support.apple.com/en-us/102149
 # On MacOS the Homebrew coreutils could be installed and then "sudo ln -s /opt/homebrew/bin/timeout /usr/local/bin/timeout"
 # Set to /usr/local/bin/timeout instead if /usr/bin/timeout is not found
 SYSTEM_TIMEOUT="timeout"
-if [ -x /usr/bin/timeout ] ; then
+if [ -x /usr/bin/timeout ]; then
     SYSTEM_TIMEOUT="/usr/bin/timeout"
-elif [ -x /usr/local/bin/timeout ] ; then
-    SYSTEM_TIMEOUT="/usr/local/bin/timeout"  
+elif [ -x /usr/local/bin/timeout ]; then
+    SYSTEM_TIMEOUT="/usr/local/bin/timeout"
 fi
 
 ###