v1.90.5

BerriAI/litellmv1.90.5Jul 17, 2026by yuneng-berri

AI Summary

This release introduces cryptographic verification for LiteLLM Docker images using cosign and includes a backport of changes from PR #33592 to the stable branch.

Key Highlights

Docker images are now signed with cosign for enhanced security verification.
Instructions provided to verify images using either a pinned commit hash or the release tag.
Includes backport of PR #33592 to stable/1.90.x.
Standard release cut for version 1.90.5.

New Features

Docker image signature verification using cosign.
Verification methods via commit hash or release tag.

Full Release Notes

## Verify Docker Image Signature

All LiteLLM Docker images are signed with [cosign](https://docs.sigstore.dev/cosign/overview/). Every release is signed with the same key introduced in [commit `0112e53`](https://github.com/BerriAI/litellm/commit/0112e53046018d726492c814b3644b7d376029d0).

**Verify using the pinned commit hash (recommended):**

A commit hash is cryptographically immutable, so this is the strongest way to ensure you are using the original signing key:

```bash
cosign verify \
  --key https://raw.githubusercontent.com/BerriAI/litellm/0112e53046018d726492c814b3644b7d376029d0/cosign.pub \
  ghcr.io/berriai/litellm:v1.90.5
```

**Verify using the release tag (convenience):**

Tags are protected in this repository and resolve to the same key. This option is easier to read but relies on tag protection rules:

```bash
cosign verify \
  --key https://raw.githubusercontent.com/BerriAI/litellm/v1.90.5/cosign.pub \
  ghcr.io/berriai/litellm:v1.90.5
```

Expected output:

```
The following checks were performed on each of these signatures:
  - The cosign claims were validated
  - The signatures were verified against the specified public key
```

---
## What's Changed
* chore(release): backport #33592 to stable/1.90.x and cut 1.90.5 by @yuneng-berri in https://github.com/BerriAI/litellm/pull/33610


**Full Changelog**: https://github.com/BerriAI/litellm/compare/v1.90.4...v1.90.5