diff --git a/src/lib/isBtcAddress.js b/src/lib/isBtcAddress.js
index 08f12f4ca..1a309e682 100644
--- a/src/lib/isBtcAddress.js
+++ b/src/lib/isBtcAddress.js
@@ -1,7 +1,7 @@
 import assertString from './util/assertString';
 
-const bech32 = /^(bc1)[a-z0-9]{25,39}$/;
-const base58 = /^(1|3)[A-HJ-NP-Za-km-z1-9]{25,39}$/;
+const bech32 = /^(bc1|tb1|bc1p|tb1p)[ac-hj-np-z02-9]{39,58}$/;
+const base58 = /^(1|2|3|m)[A-HJ-NP-Za-km-z1-9]{25,39}$/;
 
 export default function isBtcAddress(str) {
   assertString(str);
diff --git a/test/validators.test.js b/test/validators.test.js
index 6b603ff1b..9c02e6a3c 100644
--- a/test/validators.test.js
+++ b/test/validators.test.js
@@ -11154,19 +11154,34 @@ describe('Validators', () => {
       validator: 'isBtcAddress',
       valid: [
         '1MUz4VMYui5qY1mxUiG8BQ1Luv6tqkvaiL',
+        'mucFNhKMYoBQYUAEsrFVscQ1YaFQPekBpg',
         '3J98t1WpEZ73CNmQviecrnyiWrnqRhWNLy',
+        '2NFUBBRcTJbYc1D4HSCbJhKZp6YCV4PQFpQ',
         'bc1qar0srrr7xfkvy5l643lydnw9re59gtzzwf5mdq',
         '14qViLJfdGaP4EeHnDyJbEGQysnCpwk3gd',
         '35bSzXvRKLpHsHMrzb82f617cV4Srnt7hS',
         '17VZNX1SN5NtKa8UQFxwQbFeFc3iqRYhemt',
         'bc1qw508d6qejxtdg4y5r3zarvary0c5xw7kv8f3t4',
+        'tb1qxhkl607frtvjsy9nlyeg03lf6fsq947pl2pe82',
+        'bc1p5d7rjq7g6rdk2yhzks9smlaqtedr4dekq08ge8ztwac72sfr9rusxg3297',
+        'tb1pzpelffrdh9ptpaqnurwx30dlewqv57rcxfeetp86hsssk30p4cws38tr9y',
       ],
       invalid: [
+        '3J98t1WpEZ73CNmQviecrnyiWrnqh0WNL0',
+        '3J98t1WpEZ73CNmQviecrnyiWrnqh0WNLo',
+        '3J98t1WpEZ73CNmQviecrnyiWrnqh0WNLI',
+        '3J98t1WpEZ73CNmQviecrnyiWrnqh0WNLl',
         '4J98t1WpEZ73CNmQviecrnyiWrnqRhWNLy',
         '0x56F0B8A998425c53c75C4A303D4eF987533c5597',
         'pp8skudq3x5hzw8ew7vzsw8tn4k8wxsqsv0lt0mf3g',
         '17VZNX1SN5NlKa8UQFxwQbFeFc3iqRYhem',
         'BC1QW508D6QEJXTDG4Y5R3ZARVAYR0C5XW7KV8F3T4',
+        'bc1p5d7rjq7g6rdk2yhzks9smlaqtedr4dekq08ge8ztwac72sfr9rusxg3291',
+        'bc1p5d7rjq7g6rdk2yhzks9smlaqtedr4dekq08ge8ztwac72sfr9rusxg329b',
+        'bc1p5d7rjq7g6rdk2yhzks9smlaqtedr4dekq08ge8ztwac72sfr9rusxg329i',
+        'bc1p5d7rjq7g6rdk2yhzks9smlaqtedr4dekq08ge8ztwac72sfr9rusxg329o',
+        'BC1P5D7RJQ7G6RDK2YHZKS9SMLAQTEDR4DEKQ08GE8ZTWAC72SFR9RUSXG3297',
+        'TB1PZPELFFRDH9PTPAQNURWX30DLEWQV57RCXFEETP86HSSSK30P4CWS38TR9Y',
       ],
     });
   });