diff --git a/src/uu/printenv/Cargo.toml b/src/uu/printenv/Cargo.toml
index 226ac8fc5..99f673cbf 100644
--- a/src/uu/printenv/Cargo.toml
+++ b/src/uu/printenv/Cargo.toml
@@ -15,7 +15,7 @@ edition = "2021"
 path = "src/printenv.rs"
 
 [dependencies]
-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" }
 
 [[bin]]
diff --git a/src/uu/printenv/src/printenv.rs b/src/uu/printenv/src/printenv.rs
index fe550b967..d2f3291a0 100644
--- a/src/uu/printenv/src/printenv.rs
+++ b/src/uu/printenv/src/printenv.rs
@@ -7,7 +7,7 @@
 
 /* last synced with: printenv (GNU coreutils) 8.13 */
 
-use clap::{crate_version, Arg, Command};
+use clap::{crate_version, Arg, ArgAction, Command};
 use std::env;
 use uucore::{error::UResult, format_usage};
 
@@ -27,7 +27,7 @@ pub fn uumain(args: impl uucore::Args) -> UResult<()> {
         .map(|v| v.map(ToString::to_string).collect())
         .unwrap_or_default();
 
-    let separator = if matches.contains_id(OPT_NULL) {
+    let separator = if matches.get_flag(OPT_NULL) {
         "\x00"
     } else {
         "\n"
@@ -56,7 +56,7 @@ 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)
@@ -66,12 +66,12 @@ pub fn uu_app<'a>() -> Command<'a> {
             Arg::new(OPT_NULL)
                 .short('0')
                 .long(OPT_NULL)
-                .help("end each output line with 0 byte rather than newline"),
+                .help("end each output line with 0 byte rather than newline")
+                .action(ArgAction::SetTrue),
         )
         .arg(
             Arg::new(ARG_VARIABLES)
-                .multiple_occurrences(true)
-                .takes_value(true)
-                .min_values(1),
+                .action(ArgAction::Append)
+                .num_args(1..),
         )
 }