diff --git a/claude-agent-sdk/requirements.txt b/claude-agent-sdk/requirements.txt
index cfe0111..67a241b 100644
--- a/claude-agent-sdk/requirements.txt
+++ b/claude-agent-sdk/requirements.txt
@@ -6,4 +6,4 @@ aiohttp>=3.14.1
 python-dotenv==1.2.2
 
 pytest
-ruff==0.15.17
+ruff==0.15.18
diff --git a/openai-agents-sdk/requirements.txt b/openai-agents-sdk/requirements.txt
index 32aa376..bd1e1d8 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==0.15.17
+ruff==0.15.18
diff --git a/pydantic-ai/requirements.txt b/pydantic-ai/requirements.txt
index 038a8cf..2624017 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==0.15.17
+ruff==0.15.18