diff --git a/.vscode/cspell.dictionaries/workspace.wordlist.txt b/.vscode/cspell.dictionaries/workspace.wordlist.txt
index d6e91dca5..6d6533bcf 100644
--- a/.vscode/cspell.dictionaries/workspace.wordlist.txt
+++ b/.vscode/cspell.dictionaries/workspace.wordlist.txt
@@ -20,6 +20,7 @@ exacl
 filetime
 formatteriteminfo
 fsext
+fundu
 getopts
 getrandom
 globset
diff --git a/Cargo.lock b/Cargo.lock
index 4d53a4c2e..ca348f194 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -880,9 +880,9 @@ dependencies = [
 
 [[package]]
 name = "fundu"
-version = "0.3.0"
+version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "925250bc259498d4008ee072bf16586083ab2c491aa4b06b3c4d0a6556cebd74"
+checksum = "da58c38fe7b706cead98429d8a8535261addbe55fd531c7d7c7d770346464010"
 
 [[package]]
 name = "futures"
diff --git a/Cargo.toml b/Cargo.toml
index be545c860..1fe04f34c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -282,7 +282,7 @@ filetime = "0.2"
 fnv = "1.0.7"
 fs_extra = "1.1.0"
 fts-sys = "0.2"
-fundu = "0.3.0"
+fundu = "0.4.2"
 gcd = "2.2"
 glob = "0.3.0"
 half = "2.1"
diff --git a/tests/by-util/test_tail.rs b/tests/by-util/test_tail.rs
index eb18e858f..93ca1046d 100644
--- a/tests/by-util/test_tail.rs
+++ b/tests/by-util/test_tail.rs
@@ -4459,7 +4459,7 @@ fn test_follow_when_files_are_pointing_to_same_relative_file_and_file_stays_same
 }
 
 #[rstest]
-#[case::exponent_exceed_float_max("1.0e2048")]
+#[case::exponent_exceed_float_max("1.0e100000")]
 #[case::underscore_delimiter("1_000")]
 #[case::only_point(".")]
 #[case::space_in_primes("' '")]