diff --git a/CLAUDE.md b/CLAUDE.md
index 1857f4f..1544a50 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -67,7 +67,7 @@ make check      # Format, lint, and test
 
 ### Config
 
-Config stored at `~/.rootly-cli/config.yaml` or via `ROOTLY_API_TOKEN` env var:
+Config stored at `~/.rootly-cli/config.yaml` or via `ROOTLY_API_KEY` env var:
 
 ```yaml
 api_key: "your-api-key"
diff --git a/README.md b/README.md
index 06eca0e..abcd604 100644
--- a/README.md
+++ b/README.md
@@ -48,11 +48,11 @@ make build
 
 ## Configuration
 
-Set your API token via environment variable or config file:
+Set your API key via environment variable or config file:
 
 ```bash
 # Environment variable (recommended for CI/scripts)
-export ROOTLY_API_TOKEN="your-api-key"
+export ROOTLY_API_KEY="your-api-key"
 
 # Or config file at ~/.rootly-cli/config.yaml
 ```