Setting Your Ruby Version

Current default Ruby version Minimum supported Ruby version

Current default Ruby version	Minimum supported Ruby version
`3.3.5` Services created before 2024-09-05 have a different default version. See below.	`3.1.0` Existing services that use an older version can continue to do so until 2025-07-01. See details.

3.3.5

Services created before 2024-09-05 have a different default version. See below.

3.1.0

Existing services that use an older version can continue to do so until 2025-07-01. See details.

Set a different Ruby version in any of the following ways (in descending order of precedence):

Include a Gemfile.lock or a gems.locked file in the root of your repo that specifies the version to use under RUBY VERSION:
```
# Gemfile.lock
RUBY VERSION
  ruby 3.3.0
```
You can add this entry to an existing Gemfile.lock file or update its value by running:
```
bundle update --ruby
```
Add a file named .ruby-version to the root of your repo. This file contains a single line with the version to use:
```
3.3.0
```
Add a file named .tool-versions to the root of your repo. This file can specify versions for multiple languages. To set the Ruby version, add a line like the following:
```
ruby 3.3.0
```
Set the ruby directive in your Gemfile.

To avoid version mismatches across environments, you can set your Ruby version in the .ruby-version file, then read the value from that file in your Gemfile:

# Gemfile
ruby file: ".ruby-version"

History of default Ruby versions

If you don’t set a Ruby version for your service, Render’s default version depends on when you originally created the service:

Service Creation Date	Default Ruby Version
`2024-09-05` and later	`3.3.5`
`2024-07-11` to `2024-09-05`	`3.3.4`
`2024-06-13` to `2024-07-11`	`3.3.3`
`2024-06-03` to `2024-06-13`	`3.3.2`
`2024-04-23` to `2024-06-03`	`3.3.1`
`2024-03-18` to `2024-04-23`	`3.3.0`
`2023-11-01` to `2024-03-18`	`3.2.2`
Before `2023-11-01`	`2.6.8`