composer install --dev fails

"composer install --dev" gives.
>[RuntimeException]                                                                
>  Failed to execute git checkout 'v2.3.0-BETA2' && git reset --hard 'v2.3.0-BETA2'  
>                                                                                    
>  error: pathspec 'v2.3.0-BETA2' did not match any file(s) known to git.

Update the vendors?