diff --git a/Cargo.lock b/Cargo.lock
index a74acc33a..72e78bcc0 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -962,9 +962,9 @@ dependencies = [
 
 [[package]]
 name = "fundu"
-version = "0.5.0"
+version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bd020eeb034c9fc682e8fe6b9a28e1c0eda92eeb347c38776c09a0b227cdf9e5"
+checksum = "2a37cfff04a32112c22c5497b20b0b09100fca406e76afd47b2ba5ab33d7a851"
 
 [[package]]
 name = "futures"
diff --git a/Cargo.toml b/Cargo.toml
index bae5080da..b27986c1c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -282,7 +282,7 @@ filetime = "0.2"
 fnv = "1.0.7"
 fs_extra = "1.3.0"
 fts-sys = "0.2"
-fundu = "0.5.0"
+fundu = "0.5.1"
 gcd = "2.3"
 glob = "0.3.1"
 half = "2.2"
diff --git a/tests/by-util/test_sleep.rs b/tests/by-util/test_sleep.rs
index 06a22deae..13aa882b9 100644
--- a/tests/by-util/test_sleep.rs
+++ b/tests/by-util/test_sleep.rs
@@ -10,7 +10,7 @@ fn test_invalid_time_interval() {
     new_ucmd!()
         .arg("xyz")
         .fails()
-        .usage_error("invalid time interval 'xyz': Invalid character: 'x' at position 1");
+        .usage_error("invalid time interval 'xyz': Invalid input: 'xyz' at position 1");
     new_ucmd!()
         .args(&["--", "-1"])
         .fails()
@@ -211,7 +211,7 @@ fn test_sleep_when_input_has_only_whitespace_then_error(#[case] input: &str) {
 
 #[test]
 fn test_sleep_when_multiple_input_some_with_error_then_shows_all_errors() {
-    let expected = "invalid time interval 'abc': Invalid character: 'a' at position 1\n\
+    let expected = "invalid time interval 'abc': Invalid input: 'abc' at position 1\n\
         sleep: invalid time interval '1years': Invalid time unit: 'years' at position 2\n\
         sleep: invalid time interval ' ': Found only whitespace in input";