diff --git a/claude-agent-sdk/requirements.txt b/claude-agent-sdk/requirements.txt
index 59049a0..eecd164 100644
--- a/claude-agent-sdk/requirements.txt
+++ b/claude-agent-sdk/requirements.txt
@@ -6,4 +6,4 @@ aiohttp>=3.13.5
 python-dotenv==1.2.2
 
 pytest
-ruff==0.15.12
+ruff==0.15.13
diff --git a/openai-agents-sdk/requirements.txt b/openai-agents-sdk/requirements.txt
index 99f4fea..880573e 100644
--- a/openai-agents-sdk/requirements.txt
+++ b/openai-agents-sdk/requirements.txt
@@ -5,4 +5,4 @@ openai-agents
 python-dotenv==1.2.2
 
 pytest
-ruff==0.15.12
+ruff==0.15.13
diff --git a/pydantic-ai/requirements.txt b/pydantic-ai/requirements.txt
index 8536381..39e4fc5 100644
--- a/pydantic-ai/requirements.txt
+++ b/pydantic-ai/requirements.txt
@@ -5,4 +5,4 @@ pydantic-ai[openai,anthropic]
 python-dotenv==1.2.2
 
 pytest
-ruff==0.15.12
+ruff==0.15.13