A required update for Nuclear Dawn has been released. The update notes are below.

• Improved voice chat quality by adding support for the CELT voice codec (now the default).
• Improved client server networking defaults, and increased maximum rate.
• Enabled sv_voicecodec server ConVar. Valid values are "vaudio_celt" and "vaudio_speex".
• Reverted some changes causing some new issues with building placement and physics crashes.
• Ported fixes for multiple security vulnerabilities in the Source engine.