diff --git a/index.js b/index.js
index cfc5fa2..90380a5 100644
--- a/index.js
+++ b/index.js
@@ -1,6 +1,6 @@
 import en from './locale/en.js'
 
-const durationRE = /((?:\d{1,16}(?:\.\d{1,16})?|\.\d{1,16})(?:[eE][-+]?\d{1,4})?)\s*([\p{L}]{0,14})/gu
+const durationRE = /((?:\d+(?:\.\d+)?|\.\d+)(?:[eE][-+]?\d+)?)\s*([\p{L}]{0,14})/gu
 
 parse.unit = en
 
diff --git a/test.js b/test.js
index d806c9a..f292ee3 100644
--- a/test.js
+++ b/test.js
@@ -210,3 +210,10 @@ t('custom locale without group/placeholder', t => {
 	parse.unit = en
 	t.end()
 })
+
+t('numbers with long digit runs are not split into separate matches', t => {
+	t.equal(parse('0.30000000000000004s'), 0.30000000000000004 * 1000)
+	t.equal(parse('0.12345678901234567s'), 0.12345678901234567 * 1000)
+	t.equal(parse('12345678901234567ms'), 12345678901234567)
+	t.end()
+})