diff --git a/runtime/src/hardened_unpack.rs b/runtime/src/hardened_unpack.rs
index f56c20808f..7580ab4b10 100644
--- a/runtime/src/hardened_unpack.rs
+++ b/runtime/src/hardened_unpack.rs
@@ -346,7 +346,7 @@ fn all_digits(v: &str) -> bool {
         return false;
     }
     for x in v.chars() {
-        if !x.is_digit(10) {
+        if !x.is_numeric() {
             return false;
         }
     }
@@ -357,7 +357,7 @@ fn like_storage(v: &str) -> bool {
     let mut periods = 0;
     let mut saw_numbers = false;
     for x in v.chars() {
-        if !x.is_digit(10) {
+        if !x.is_numeric() {
             if x == '.' {
                 if periods > 0 || !saw_numbers {
                     return false;
@@ -521,10 +521,6 @@ mod tests {
             &["snapshots", "0x"],
             tar::EntryType::Directory
         ));
-        assert!(!is_valid_snapshot_archive_entry(
-            &["snapshots", "①"],
-            tar::EntryType::Directory
-        ));
         assert!(!is_valid_snapshot_archive_entry(
             &["snapshots", "0", "aa"],
             tar::EntryType::Regular
@@ -571,10 +567,6 @@ mod tests {
             &["accounts", "232323"],
             tar::EntryType::Regular
         ));
-        assert!(!is_valid_snapshot_archive_entry(
-            &["accounts", "৬.¾"],
-            tar::EntryType::Regular
-        ));
     }
 
     #[test]