diff --git a/.github/workflows/claude.yml b/.github/workflows/claude.yml
index 35d9fe3..99407a3 100644
--- a/.github/workflows/claude.yml
+++ b/.github/workflows/claude.yml
@@ -36,4 +36,4 @@ jobs:
           anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
           allowed_tools: "Bash(bun install),Bash(bun test:*),Bash(bun run format),Bash(bun typecheck)"
           custom_instructions: "You have also been granted tools for editing files and running bun commands (install, run, test, typecheck) for testing your changes: bun install, bun test, bun run format, bun typecheck."
-          model: "claude-opus-4-20250514"
+          model: "claude-opus-4-1-20250805"
diff --git a/base-action/README.md b/base-action/README.md
index 2166511..2a9a863 100644
--- a/base-action/README.md
+++ b/base-action/README.md
@@ -69,7 +69,7 @@ Add the following to your workflow file:
   uses: anthropics/claude-code-base-action@beta
   with:
     prompt: "Review and fix TypeScript errors"
-    model: "claude-opus-4-20250514"
+    model: "claude-opus-4-1-20250805"
     fallback_model: "claude-sonnet-4-20250514"
     allowed_tools: "Bash(git:*),View,GlobTool,GrepTool,BatchTool"
     anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
@@ -217,7 +217,7 @@ Provide the settings configuration directly as a JSON string:
     prompt: "Your prompt here"
     settings: |
       {
-        "model": "claude-opus-4-20250514",
+        "model": "claude-opus-4-1-20250805",
         "env": {
           "DEBUG": "true",
           "API_URL": "https://api.example.com"
diff --git a/base-action/test/setup-claude-code-settings.test.ts b/base-action/test/setup-claude-code-settings.test.ts
index c5a103b..19cf0cd 100644
--- a/base-action/test/setup-claude-code-settings.test.ts
+++ b/base-action/test/setup-claude-code-settings.test.ts
@@ -134,7 +134,7 @@ describe("setupClaudeCodeSettings", () => {
     // Then, add new settings
     const newSettings = JSON.stringify({
       newKey: "newValue",
-      model: "claude-opus-4-20250514",
+      model: "claude-opus-4-1-20250805",
     });
 
     await setupClaudeCodeSettings(newSettings, testHomeDir);
@@ -145,7 +145,7 @@ describe("setupClaudeCodeSettings", () => {
     expect(settings.enableAllProjectMcpServers).toBe(true);
     expect(settings.existingKey).toBe("existingValue");
     expect(settings.newKey).toBe("newValue");
-    expect(settings.model).toBe("claude-opus-4-20250514");
+    expect(settings.model).toBe("claude-opus-4-1-20250805");
   });
 
   test("should copy slash commands to .claude directory when path provided", async () => {
diff --git a/docs/configuration.md b/docs/configuration.md
index 5d3d125..ec0f317 100644
--- a/docs/configuration.md
+++ b/docs/configuration.md
@@ -252,7 +252,7 @@ You can provide Claude Code settings to customize behavior such as model selecti
   with:
     settings: |
       {
-        "model": "claude-opus-4-20250514",
+        "model": "claude-opus-4-1-20250805",
         "env": {
           "DEBUG": "true",
           "API_URL": "https://api.example.com"