[Compile or cmake problems]

-- Detected 64-bit platform
-- UNIX: Using default configuration directory
-- UNIX: Using default library directory
-- UNIX: Configuring uninstall target
-- UNIX: Created uninstall target
-- UNIX: Detected compiler: /usr/bin/cc
CMake Error at cmake/compiler/gcc/settings.cmake:9 (message):
  GCC: TrinityCore requires version 6.3.0 to build but found 6.0.0
Call Stack (most recent call first):
  cmake/platform/unix/settings.cmake:29 (include)
  cmake/macros/CheckPlatform.cmake:13 (include)
  CMakeLists.txt:61 (include)

getting this response when starting to compile. why is it telling me my Trinity isn't up to date when I downloaded it today?