diff --git a/README.md b/README.md
index 059426d..6906cfb 100644
--- a/README.md
+++ b/README.md
@@ -21,9 +21,9 @@ yarn add @theoryofnekomata/number-name
 
 ## TODO
 
-- [ ] Implement stream support
-- [ ] Implement `BigInt` support
-- [ ] Fully localizable number systems (e.g. custom rules for combining fragments of number words)
+- [X] Implement stream support
+- [X] Implement `BigInt` support
+- [X] Fully localizable number systems (e.g. custom rules for combining fragments of number words)
 - [ ] Optimizations for fractions.
 - [ ] Implement other `fractionType`s, (only `lazy` (digits) is supported as of 0.2.0, e.g. `0.05` => `zero point zero five`,
       will implement `ratio` (`zero and five over one hundred`) and `part` (`zero and five hundredths`))