diff --git a/nodejs/devin/sample-agent/package.json b/nodejs/devin/sample-agent/package.json
index 426bb851..2ea64242 100644
--- a/nodejs/devin/sample-agent/package.json
+++ b/nodejs/devin/sample-agent/package.json
@@ -19,10 +19,13 @@
     "@microsoft/agents-a365-runtime": "^0.1.0-preview.30",
     "@microsoft/agents-a365-tooling": "^0.1.0-preview.30",
     "@microsoft/agents-hosting": "^1.0.15",
-    "uuid": "^13.0.0"
+    "uuid": "^13.0.0",
+    "express": "^5.1.0"
   },
   "devDependencies": {
     "@microsoft/m365agentsplayground": "^0.2.20",
-    "typescript": "^5.9.2"
+    "typescript": "^5.9.2", 
+    "@types/express": "^5.0.6", 
+    "@types/node": "^25.2.3" 
   }
 }
diff --git a/nodejs/langchain/quickstart-before/package.json b/nodejs/langchain/quickstart-before/package.json
index edf660a1..65b31fe2 100644
--- a/nodejs/langchain/quickstart-before/package.json
+++ b/nodejs/langchain/quickstart-before/package.json
@@ -39,6 +39,8 @@
     "@types/express": "^4.17.25",
     "@types/node": "^20.19.37",
     "nodemon": "^3.1.10",
-    "ts-node": "^10.9.2"
+    "ts-node": "^10.9.2", 
+    "@types/express": "^5.0.6" ,
+    "@types/node": "^25.2.3"
   }
 }
diff --git a/python/agent-framework/sample-agent/agent.py b/python/agent-framework/sample-agent/agent.py
index 04974e8b..081050a7 100644
--- a/python/agent-framework/sample-agent/agent.py
+++ b/python/agent-framework/sample-agent/agent.py
@@ -37,7 +37,31 @@
 # <DependencyImports>
 
 # AgentFramework SDK
-from agent_framework import ChatAgent
+# -----------------------------------------------------------------------------
+# TEMPORARY COMPATIBILITY WORKAROUND (NOT A LONG-TERM SOLUTION)
+#
+# Context:
+# - Recent versions of agent-framework-core no longer export `ChatAgent`.
+# - This sample / tooling extension currently imports and/or expects `ChatAgent`.
+#
+# What this does:
+# - Provides a short-term compatibility so the sample can run until upstream
+#   packages are updated.
+#
+# Why it's temporary:
+# - Monkey-patching is fragile and can break with import order or
+#   future package changes.
+#
+# Removal plan:
+# - Remove this block once either:
+#   (1) agent-framework-core exports ChatAgent again, OR
+#   (2) microsoft_agents_a365_tooling_extensions_agentframework is updated to use `Agent`
+#       (or a stable interface) instead of ChatAgent.
+#
+# -----------------------------------------------------------------------------
+import agent_framework as _af
+from agent_framework import Agent as ChatAgent
+_af.ChatAgent = ChatAgent
 from agent_framework.azure import AzureOpenAIChatClient
 
 # Agent Interface
@@ -151,9 +175,9 @@ def _create_agent(self):
         """Create the AgentFramework agent with initial configuration"""
         try:
             self.agent = ChatAgent(
-                chat_client=self.chat_client,
-                instructions=self.AGENT_PROMPT,
-                tools=[],
+            client=self.chat_client,  # correct keyword name
+            instructions=self.AGENT_PROMPT,
+            tools=[],
             )
             logger.info("✅ AgentFramework agent created")
         except Exception as e: