diff --git a/packages/rstack/src/fmt/ignore.ts b/packages/rstack/src/fmt/ignore.ts
index f1f40c0d..545050ff 100644
--- a/packages/rstack/src/fmt/ignore.ts
+++ b/packages/rstack/src/fmt/ignore.ts
@@ -8,7 +8,7 @@ import { loadNativeBinding } from '../native/index.ts';
 import type { ResolvedFmtConfig } from './types.ts';
 
 /**
- * Common lock files that Prettier can format but `rs fmt` leaves to their generating tools.
+ * Generated files and tool distributions that `rs fmt` leaves to their owning tools.
  *
  * Prettier already skips other generated lock files when it cannot infer a parser, so this list
  * contains only the additional defaults owned by `rs fmt`.
@@ -17,6 +17,7 @@ const defaultIgnorePatterns = [
   'package-lock.json',
   'pnpm-lock.yaml',
   'skills-lock.json',
+  '**/.yarn/releases/',
 ];
 
 type IgnorePredicate = (filePath: string, isDirectory?: boolean) => boolean;
diff --git a/website/docs/en/guide/formatting.mdx b/website/docs/en/guide/formatting.mdx
index 10c7da05..ae47fa0f 100644
--- a/website/docs/en/guide/formatting.mdx
+++ b/website/docs/en/guide/formatting.mdx
@@ -122,7 +122,7 @@ define.fmt({
 `rs fmt` uses the following three steps to decide which paths to format:
 
 1. **Process command-line arguments and `.gitignore`**: It first processes the files, directories, and glob patterns passed on the command line. A glob that starts with `!` excludes matching paths. Directory and glob scans follow `.gitignore`, while files passed directly do not. Paths excluded in this step cannot be re-included later.
-2. **Apply default ignore rules and `ignorePatterns`**: By default, the command ignores [lock files](#lock-files), then applies `ignorePatterns`. These rules are evaluated in order, with later rules taking precedence. For example, `!pnpm-lock.yaml` re-includes the otherwise ignored file.
+2. **Apply default ignore rules and `ignorePatterns`**: By default, the command ignores [lock files](#lock-files) and `.yarn/releases/` directories, then applies `ignorePatterns`. These rules are evaluated in order, with later rules taking precedence. For example, `!pnpm-lock.yaml` re-includes the otherwise ignored file.
 3. **Apply files specified with [`--ignore-path`](./cli/fmt#--ignore-path-path)**: Each ignore file is evaluated separately, and later rules take precedence within that file. Exclusions from different files and `ignorePatterns` are combined: if any source ignores a path, that path remains excluded, even if another source re-includes it.
 
 > Even when a file is passed directly on the command line, the default ignore rules, `ignorePatterns`, and rules from `--ignore-path` still apply. The same is true for paths specified with [`--stdin-filepath`](./cli/fmt#--stdin-filepath-path) and for documents formatted through [`--lsp`](./cli/fmt#--lsp).
diff --git a/website/docs/zh/guide/formatting.mdx b/website/docs/zh/guide/formatting.mdx
index abe23c07..7615fbfb 100644
--- a/website/docs/zh/guide/formatting.mdx
+++ b/website/docs/zh/guide/formatting.mdx
@@ -122,7 +122,7 @@ define.fmt({
 `rs fmt` 会通过以下三个步骤，决定需要格式化哪些路径：
 
 1. **处理命令行参数和 `.gitignore`**：首先处理命令行中指定的文件、目录和 glob 模式。以 `!` 开头的 glob 模式用于排除路径。扫描目录或 glob 模式时会遵循 `.gitignore`，直接指定的文件则不会。在这一步被排除的路径无法被后续规则重新包含。
-2. **应用默认忽略规则和 `ignorePatterns`**：默认忽略 [lock 文件](#lock-files)，随后应用 `ignorePatterns`。这些规则按顺序匹配，后面的规则优先。例如，`!pnpm-lock.yaml` 可以重新包含默认忽略的文件。
+2. **应用默认忽略规则和 `ignorePatterns`**：默认忽略 [lock 文件](#lock-files) 和 `.yarn/releases/` 目录，随后应用 `ignorePatterns`。这些规则按顺序匹配，后面的规则优先。例如，`!pnpm-lock.yaml` 可以重新包含默认忽略的文件。
 3. **应用 [`--ignore-path`](./cli/fmt#--ignore-path-path) 指定的文件**：每个 ignore 文件单独匹配，同一文件中后面的规则优先。不同 ignore 文件与 `ignorePatterns` 的排除结果会叠加：只要任一来源忽略某个路径，该路径就会保持排除，即使其他来源尝试重新包含它。
 
 > 即使命令行直接指定了某个文件，默认忽略规则、`ignorePatterns` 和 `--ignore-path` 中的规则仍然有效。通过 [`--stdin-filepath`](./cli/fmt#--stdin-filepath-path) 指定的路径，以及通过 [`--lsp`](./cli/fmt#--lsp) 格式化的文档也是如此。