This page provides key dates for App Engine flexible environment language runtimes as described in the Runtime lifecycle page.
Based on qualification and stability of releases, availability and key dates might be delayed. Revisit this page to stay up to date.
Go
| Runtime |
Environment |
Runtime Version |
End of support |
Deprecated |
Decommission |
| Go 1.22 |
Ubuntu 22.04 |
1.22 |
|
|
|
| Go 1.21 |
Ubuntu 22.04 |
1.21 |
|
|
|
| Go 1.20 |
Ubuntu 22.04 |
1.20 |
|
|
|
| Go 1.19 |
Ubuntu 22.04 |
1.19 |
2024-07-10 |
2025-07-10 |
|
| Go 1.18 |
Ubuntu 22.04 |
1.18 |
2024-07-10 |
2025-07-10 |
|
| Go 1.15 |
Distroless |
1.15 |
2024-07-10 |
2025-07-10 |
|
| Go 1.14 |
Distroless |
1.14 |
2024-07-10 |
2025-07-10 |
|
| Go 1.13 |
Distroless |
1.13 |
2024-07-10 |
2025-07-10 |
|
| Go 1.12 |
Distroless |
1.12 |
2024-07-10 |
2025-07-10 |
|
| Go 1.11 |
Distroless |
1.11 |
2024-07-10 |
2025-07-10 |
|
| Go 1.10 |
Distroless |
1.10 |
2024-07-10 |
2025-07-10 |
|
| Go 1.9 |
Distroless |
1.9 |
2024-07-10 |
2025-07-10 |
|
Java
| Runtime |
Environment |
Runtime Version |
End of support |
Deprecated |
Decommission |
| Java 21 |
Ubuntu 22.04 |
21 |
Oct 2031 |
|
|
| Java 17 |
Ubuntu 22.04 |
17 |
Oct 2027 |
|
|
| Java 11 |
Ubuntu 18.04 |
11 |
Oct 2024 |
|
|
| Java 8 |
Debian 9 |
8 |
2024-07-10 |
2025-07-10 |
|
Node.js
| Runtime |
Environment |
Runtime Version |
End of support |
Deprecated |
Decommission |
| Node.js 20 |
Ubuntu 22.04 |
20 |
2026-04-30 |
2027-04-30 |
|
| Node.js 18 |
Ubuntu 22.04 |
18 |
2025-04-30 |
2026-04-30 |
|
| Node.js 16 |
Ubuntu 16.04 |
16 |
2024-07-10 |
2025-07-10 |
|
| Node.js 14 |
Ubuntu 16.04 |
14 |
2024-07-10 |
2025-07-10 |
|
| Node.js 12 |
Ubuntu 16.04 |
12 |
2024-07-10 |
2025-07-10 |
|
| Node.js 10 |
Ubuntu 16.04 |
10 |
2024-07-10 |
2025-07-10 |
|
| Node.js 8 |
Ubuntu 16.04 |
8 |
2024-07-10 |
2025-07-10 |
|
Python
| Runtime |
Environment |
Runtime Version |
End of support |
Deprecated |
Decommission |
| Python 3.12 |
Ubuntu 22.04 |
3.12 |
2028-10-02 |
2029-10-02 |
|
| Python 3.11 |
Ubuntu 22.04 |
3.11 |
2027-10-24 |
2028-10-24 |
|
| Python 3.10 |
Ubuntu 22.04 |
3.10 |
2026-10-04 |
2027-10-04 |
|
| Python 3.9 |
Ubuntu 18.04 |
3.9 |
2025-10-05 |
2026-10-05 |
|
| Python 3.8 |
Ubuntu 18.04 |
3.8 |
2024-10-14 |
2025-10-14 |
|
| Python 3.7 |
Ubuntu 16.04 |
3.7 |
2024-07-10 |
2025-07-10 |
|
| Python 3.6 |
Ubuntu 16.04 |
3.6 |
2024-07-10 |
2025-07-10 |
|
| Python 3.5 |
Ubuntu 16.04 |
3.5 |
2024-07-10 |
2025-07-10 |
|
| Python 3.4 |
Ubuntu 16.04 |
3.4 |
2024-07-10 |
2025-07-10 |
|
| Python 2.7 |
Ubuntu 16.04 |
2 |
2024-07-10 |
2025-07-10 |
|
PHP
| Runtime |
Environment |
Runtime Version |
End of support |
Deprecated |
Decommission |
| PHP 8.3 |
Ubuntu 22.04 |
8.3 |
2026-11-23 |
2027-11-23 |
|
| PHP 8.2 |
Ubuntu 22.04 |
8.2 |
2025-12-08 |
2026-12-08 |
|
| PHP 8.1 |
Ubuntu 18.04 |
8.1 |
2024-11-25 |
2025-11-25 |
|
| PHP 7.4 |
Ubuntu 18.04 |
7.4 |
2024-07-10 |
2025-07-10 |
|
| PHP 7.3 |
Ubuntu 16.04 |
7.3 |
2024-07-10 |
2025-07-10 |
|
| PHP 7.2 |
Ubuntu 16.04 |
7.2 |
2024-07-10 |
2025-07-10 |
|
Ruby
| Runtime |
Environment |
Runtime Version |
End of support |
Deprecated |
Decommission |
| Ruby 3.2 |
Ubuntu 22.04 |
3.2 |
2026-03-31 |
2027-03-31 |
|
| Ruby 3.1 |
Ubuntu 16.04 |
3.1 |
2024-07-10 |
2025-07-10 |
|
| Ruby 3.0 |
Ubuntu 16.04 |
3.0 |
2024-07-10 |
2025-07-10 |
|
| Ruby 2.7 |
Ubuntu 16.04 |
2.7 |
2024-07-10 |
2025-07-10 |
|
| Ruby 2.6 |
Ubuntu 16.04 |
2.6 |
2024-07-10 |
2025-07-10 |
|
.NET
| Runtime |
Environment |
Runtime Version |
End of support |
Deprecated |
Decommission |
| .NET 8 |
Ubuntu 22.04 |
8 |
|
|
|
| .NET 6 |
Ubuntu 22.04 |
6 |
2024-11-12 |
2025-11-12 |
|
| .NET 3 |
Ubuntu 16.04 |
3 |
2024-07-10 |
2025-07-10 |
|
| .NET 2 |
Ubuntu 16.04 |
2 |
2024-07-10 |
2025-07-10 |
|
| .NET 1 |
Ubuntu 16.04 |
1 |
2024-07-10 |
2025-07-10 |
|
