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Regex for Semantic Version

Semantic version matching is useful in release tooling, changelog parsing, and dependency dashboards where you need to distinguish versions from free text.

Regex
/^(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)(?:-[0-9A-Za-z-]+(?:\.[0-9A-Za-z-]+)*)?(?:\+[0-9A-Za-z-]+(?:\.[0-9A-Za-z-]+)*)?$/

Try this pattern

Matches current input
1.2.3

1 match found in the current text.

Passing examples

  • 1.2.3
  • 2.0.0-beta.1+build7

Failing examples

  • 01.2.3
  • v1.2

Code examples

JavaScript
const regex = /^(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)(?:-[0-9A-Za-z-]+(?:\.[0-9A-Za-z-]+)*)?(?:\+[0-9A-Za-z-]+(?:\.[0-9A-Za-z-]+)*)?$/g;
regex.test(input);
Python
import re
pattern = re.compile(r"^(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)(?:-[0-9A-Za-z-]+(?:\.[0-9A-Za-z-]+)*)?(?:\+[0-9A-Za-z-]+(?:\.[0-9A-Za-z-]+)*)?$")
bool(pattern.search(input))
Go
re := regexp.MustCompile("^(0|[1-9]\\d*)\\.(0|[1-9]\\d*)\\.(0|[1-9]\\d*)(?:-[0-9A-Za-z-]+(?:\\.[0-9A-Za-z-]+)*)?(?:\\+[0-9A-Za-z-]+(?:\\.[0-9A-Za-z-]+)*)?$")
matched := re.MatchString(input)

Related Validation Patterns

Regex for Valid Email Address
/^[^\s@]+@[^\s@]+\.[^\s@]+$/i
Regex for URL Slug
/^[a-z0-9]+(?:-[a-z0-9]+)*$/
Regex for Strong Password
/^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[^A-Za-z\d]).{12,}$/
Regex for UUID v4
/^[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i
Regex for IPv4 Address
/^(?:25[0-5]|2[0-4]\d|1?\d?\d)(?:\.(?:25[0-5]|2[0-4]\d|1?\d?\d)){3}$/
Regex for Hex Color
/^#?(?:[0-9a-fA-F]{3}|[0-9a-fA-F]{6})$/