Version 5.0.1 of Nuspell has been released. Parsing of .dic files for some problematic dictionaries has been fixed. Internal calls to icu::UnicodeString::toTitle() have been simplified, which results with a minor speedup. This enables Nuspell to be linked to unconventional ICU builds without break iterator, like the one in Firefox. This version requires GCC 8 as minimal version of GCC because internally std::from_chars() is used now.