diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 24548c3..c8e95a7 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -50,12 +50,12 @@ jobs:
       - name: Build for Universal macOS
         run: lipo -create -output target/deepctl-macos target/x86_64-apple-darwin/release/deepctl target/aarch64-apple-darwin/release/deepctl
 
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
           name: deepctl-linux
           path: target/x86_64-unknown-linux-musl/release/deepctl
 
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
           name: deepctl-macos
           path: target/deepctl-macos
diff --git a/README.md b/README.md
index 8c44ece..1cec0b8 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,10 @@
 # deepctl
+
+> [!WARNING]
+> **deepctl is deprecated and no longer maintained.** This repository is archived, and `deepctl auth login` will stop working.
+>
+> Use the [Deep Infra HTTP API](https://docs.deepinfra.com/) or any OpenAI-compatible SDK instead. Create API keys in the [dashboard](https://deepinfra.com/dash/api_keys).
+
 Command line tool for [Deep Infra cloud ML inference service](https://deepinfra.com/).
 
 ## Installation