---
name: "Perl::Critic::Policy::ValuesAndExpressions::ProhibitVersionStrings"
section: "3pm"
platform: "linux"
package: "perl-perl-critic"
version: "1.156-3"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/Perl::Critic::Policy::ValuesAndExpressions::ProhibitVersionStrings"
---

# Perl::Critic::Policy::ValuesAndExpressions::ProhibitVersionStrings(3pm)

Don't use strings like "v1.4" or "1.4.5" when including other modules.

## NAME

Perl::Critic::Policy::ValuesAndExpressions::ProhibitVersionStrings - Don't use strings like "v1.4" or "1.4.5" when including other modules.

## AFFILIATION

This Policy is part of the core Perl::Critic distribution.

## DESCRIPTION

Whenever you `"use"` or `"require"` a module, you can specify a minimum version requirement.  To ensure compatibility with older Perls, this version number should be expressed as a floating-point number.  Do not use v-strings or three-part numbers.  The Perl convention for expressing version numbers as floats is: version + (patch level / 1000).

```
    use Foo v1.2    qw(foo bar);  # not ok
    use Foo 1.2.03  qw(foo bar);  # not ok
    use Foo 1.00203 qw(foo bar);  # ok
```

## CONFIGURATION

This Policy is not configurable except for the standard options.

## AUTHOR

Jeffrey Ryan Thalhammer \<jeff@imaginative-software.com\>

## COPYRIGHT

Copyright (c) 2005-2011 Imaginative Software Systems.  All rights reserved.

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.  The full text of this license can be found in the LICENSE file included with this module.