diff --git a/Cargo.lock b/Cargo.lock
index 1621202..837f7f7 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -653,73 +653,6 @@ dependencies = [
  "getrandom",
 ]
 
-[[package]]
-name = "num"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "43db66d1170d347f9a065114077f7dccb00c1b9478c89384490a3425279a4606"
-dependencies = [
- "num-bigint",
- "num-complex",
- "num-integer",
- "num-iter",
- "num-rational",
- "num-traits",
-]
-
-[[package]]
-name = "num-bigint"
-version = "0.4.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f93ab6289c7b344a8a9f60f88d80aa20032336fe78da341afc91c8a2341fc75f"
-dependencies = [
- "autocfg",
- "num-integer",
- "num-traits",
-]
-
-[[package]]
-name = "num-complex"
-version = "0.4.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "02e0d21255c828d6f128a1e41534206671e8c3ea0c62f32291e808dc82cff17d"
-dependencies = [
- "num-traits",
-]
-
-[[package]]
-name = "num-integer"
-version = "0.1.45"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "225d3389fb3509a24c93f5c29eb6bde2586b98d9f016636dff58d7c6f7569cd9"
-dependencies = [
- "autocfg",
- "num-traits",
-]
-
-[[package]]
-name = "num-iter"
-version = "0.1.43"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7d03e6c028c5dc5cac6e2dec0efda81fc887605bb3d884578bb6d6bf7514e252"
-dependencies = [
- "autocfg",
- "num-integer",
- "num-traits",
-]
-
-[[package]]
-name = "num-rational"
-version = "0.4.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0638a1c9d0a3c0914158145bc76cff373a75a627e6ecbfb71cbe6f453a5a19b0"
-dependencies = [
- "autocfg",
- "num-bigint",
- "num-integer",
- "num-traits",
-]
-
 [[package]]
 name = "num-traits"
 version = "0.2.15"
@@ -773,7 +706,6 @@ dependencies = [
  "libc",
  "linked-hash-map",
  "lzzzz",
- "num",
  "once_cell",
  "parse-display",
  "proptest",
diff --git a/Cargo.toml b/Cargo.toml
index c8dff06..d7291ee 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -23,7 +23,6 @@ ignore = "0.4.20"
 libc = "0.2.140"
 linked-hash-map = "0.5.6"
 lzzzz = "1.0.4"
-num = "0.4.0"
 once_cell = "1.17.1"
 rayon = "1.7.0"
 same-file = "1.0.6"
diff --git a/src/commands/compress.rs b/src/commands/compress.rs
index f8da228..6d941ac 100644
--- a/src/commands/compress.rs
+++ b/src/commands/compress.rs
@@ -46,37 +46,40 @@ pub fn compress_files(
                 // instead of the regular default that flate2 uses
                 gzp::par::compress::ParCompress::<gzp::deflate::Gzip>::builder()
                     .compression_level(
-                        level.map_or_else(Default::default, |l| gzp::Compression::new(num::clamp(l as u32, 1, 9))),
+                        level.map_or_else(Default::default, |l| gzp::Compression::new((l as u32).clamp(0, 9))),
                     )
                     .from_writer(encoder),
             ),
             Bzip => Box::new(bzip2::write::BzEncoder::new(
                 encoder,
-                level.map_or_else(Default::default, |l| {
-                    bzip2::Compression::new(num::clamp(l as u32, 1, 9))
-                }),
+                level.map_or_else(Default::default, |l| bzip2::Compression::new((l as u32).clamp(1, 9))),
             )),
             Lz4 => Box::new(lzzzz::lz4f::WriteCompressor::new(
                 encoder,
                 lzzzz::lz4f::PreferencesBuilder::new()
-                    .compression_level(level.map_or(0, |l| num::clamp(l as i32, 1, 12)))
+                    .compression_level(level.map_or(0, |l| (l as i32).clamp(1, lzzzz::lz4f::CLEVEL_MAX)))
                     .build(),
             )?),
             Lzma => Box::new(xz2::write::XzEncoder::new(
                 encoder,
-                level.map_or(6, |l| num::clamp(l as u32, 0, 9)),
+                level.map_or(6, |l| (l as u32).clamp(0, 9)),
             )),
             Snappy => Box::new(
                 gzp::par::compress::ParCompress::<gzp::snap::Snap>::builder()
                     .compression_level(gzp::par::compress::Compression::new(
-                        level.map_or_else(Default::default, |l| num::clamp(l as u32, 0, 9)),
+                        level.map_or_else(Default::default, |l| (l as u32).clamp(0, 9)),
                     ))
                     .from_writer(encoder),
             ),
             Zstd => Box::new(
-                zstd::stream::write::Encoder::new(encoder, level.map_or(0, |l| num::clamp(l as i32, 1, 22)))
-                    .unwrap()
-                    .auto_finish(),
+                zstd::stream::write::Encoder::new(
+                    encoder,
+                    level.map_or(0, |l| {
+                        (l as i32).clamp(zstd::zstd_safe::min_c_level(), zstd::zstd_safe::max_c_level())
+                    }),
+                )
+                .unwrap()
+                .auto_finish(),
             ),
             Tar | Zip => unreachable!(),
         };