diff --git a/src/agents/tatlock.py b/src/agents/tatlock.py
index b3331be..bc5ed4c 100644
--- a/src/agents/tatlock.py
+++ b/src/agents/tatlock.py
@@ -736,8 +736,8 @@ class TatlockAgent(AgentInterface):
 
         # Extract tool calls and results from the agent's messages
         tools_called = []
-        expert_results = {}
-        tool_outputs = {}
+        expert_results: dict[str, Any] = {}
+        tool_outputs: dict[str, Any] = {}
 
         # Parse through new messages to find tool calls and returns
         for msg in result.new_messages():
diff --git a/src/core/tracing_router.py b/src/core/tracing_router.py
index bffb00a..caf6c22 100644
--- a/src/core/tracing_router.py
+++ b/src/core/tracing_router.py
@@ -7,6 +7,7 @@ Only available when DEBUG=true.
 
 from datetime import UTC
 from pathlib import Path
+from typing import Any
 
 from fastapi import APIRouter, HTTPException
 from fastapi.responses import HTMLResponse, JSONResponse
@@ -82,7 +83,7 @@ async def list_traces(
         reverse=True,
     )
 
-    traces = []
+    traces: list[dict[str, Any]] = []
     for path in trace_files:
         if len(traces) >= limit:
             break
diff --git a/src/responses/context.py b/src/responses/context.py
index a255004..cea180a 100644
--- a/src/responses/context.py
+++ b/src/responses/context.py
@@ -83,7 +83,7 @@ class ContextWindow:
             return []
 
         # Start from most recent, work backwards
-        kept_items = []
+        kept_items: list[Any] = []
         current_tokens = 0
 
         for item in reversed(items):