revalorize
/ˌriːˈvalərʌɪz/(also revalorise)
verb
1 [with object] Economics. To establish a new (especially a higher) price or value for (a commodity, asset, etc.); specifically to revalue (a currency).
2 [with object] To assign worth or importance to (something previously considered of little value); to re-evaluate in more positive terms.
Origin
1920s; earliest use found in The Times. From re- + valorize, after revalorization.