diff --git a/src/uucore/Cargo.toml b/src/uucore/Cargo.toml
index 67e1bd3e5..268c775ec 100644
--- a/src/uucore/Cargo.toml
+++ b/src/uucore/Cargo.toml
@@ -21,17 +21,16 @@ all-features = true
 path = "src/lib/lib.rs"
 
 [dependencies]
-chrono = { workspace = true }
-chrono-tz = { workspace = true }
+chrono = { workspace = true, optional = true }
+chrono-tz = { workspace = true, optional = true }
 clap = { workspace = true }
 uucore_procs = { workspace = true }
 number_prefix = { workspace = true }
 dns-lookup = { workspace = true, optional = true }
 dunce = { version = "1.0.4", optional = true }
 wild = "2.2.1"
-glob = { workspace = true }
-iana-time-zone = { workspace = true }
-# * optional
+glob = { workspace = true, optional = true }
+iana-time-zone = { workspace = true, optional = true }
 itertools = { workspace = true, optional = true }
 thiserror = { workspace = true, optional = true }
 time = { workspace = true, optional = true, features = [
@@ -67,7 +66,6 @@ nix = { workspace = true, features = ["fs", "uio", "zerocopy", "signal"] }
 xattr = { workspace = true, optional = true }
 
 [dev-dependencies]
-clap = { workspace = true }
 tempfile = { workspace = true }
 
 [target.'cfg(target_os = "windows")'.dependencies]
@@ -114,7 +112,7 @@ proc-info = ["tty", "walkdir"]
 quoting-style = []
 ranges = []
 ringbuffer = []
-parser = ["extendedbigdecimal", "num-traits"]
+parser = ["extendedbigdecimal", "glob", "num-traits"]
 signals = []
 sum = [
   "digest",
@@ -134,6 +132,6 @@ utf8 = []
 utmpx = ["time", "time/macros", "libc", "dns-lookup"]
 version-cmp = []
 wide = []
-custom-tz-fmt = []
+custom-tz-fmt = ["chrono", "chrono-tz", "iana-time-zone"]
 tty = []
 uptime = ["libc", "windows-sys", "utmpx", "utmp-classic", "thiserror"]