diff --git a/client.go b/client.go
index 14e4581..03d59f8 100644
--- a/client.go
+++ b/client.go
@@ -71,7 +71,7 @@ func (c *Client) NewRequest(ctx context.Context, method, path string, in any) (*
 		req.Header.Set("Content-Type", "application/json")
 	}
 	if len(c.apiKey) > 0 {
-		req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", c.apiKey))
+		req.Header.Set("X-Api-Key", c.apiKey)
 	}
 	return req, nil
 }