diff --git a/src/uu/uptime/Cargo.toml b/src/uu/uptime/Cargo.toml
index c6ae6664c..633c3ba1c 100644
--- a/src/uu/uptime/Cargo.toml
+++ b/src/uu/uptime/Cargo.toml
@@ -16,7 +16,7 @@ path = "src/uptime.rs"
 
 [dependencies]
 chrono = { version="^0.4.19", default-features=false, features=["std", "alloc", "clock"]}
-clap = { version = "3.2", features = ["wrap_help", "cargo"] }
+clap = { version = "4.0", features = ["wrap_help", "cargo"] }
 uucore = { version=">=0.0.16", package="uucore", path="../../uucore", features=["libc", "utmpx"] }
 
 [[bin]]
diff --git a/src/uu/uptime/src/uptime.rs b/src/uu/uptime/src/uptime.rs
index 41c962fb2..6b3ead6e9 100644
--- a/src/uu/uptime/src/uptime.rs
+++ b/src/uu/uptime/src/uptime.rs
@@ -9,7 +9,7 @@
 // spell-checker:ignore (ToDO) getloadavg upsecs updays nusers loadavg boottime uphours upmins
 
 use chrono::{Local, TimeZone, Utc};
-use clap::{crate_version, Arg, Command};
+use clap::{crate_version, Arg, ArgAction, Command};
 
 use uucore::format_usage;
 // import crate time from utmpx
@@ -43,7 +43,7 @@ pub fn uumain(args: impl uucore::Args) -> UResult<()> {
     if uptime < 0 {
         Err(USimpleError::new(1, "could not retrieve system uptime"))
     } else {
-        if matches.contains_id(options::SINCE) {
+        if matches.get_flag(options::SINCE) {
             let initial_date = Local.timestamp(Utc::now().timestamp() - uptime, 0);
             println!("{}", initial_date.format("%Y-%m-%d %H:%M:%S"));
             return Ok(());
@@ -59,7 +59,7 @@ pub fn uumain(args: impl uucore::Args) -> UResult<()> {
     }
 }
 
-pub fn uu_app<'a>() -> Command<'a> {
+pub fn uu_app() -> Command {
     Command::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
@@ -69,7 +69,8 @@ pub fn uu_app<'a>() -> Command<'a> {
             Arg::new(options::SINCE)
                 .short('s')
                 .long(options::SINCE)
-                .help("system up since"),
+                .help("system up since")
+                .action(ArgAction::SetTrue),
         )
 }