diff --git a/environments/agent_loop.py b/environments/agent_loop.py
index 891ce42f448..7ca3a0f6ddb 100644
--- a/environments/agent_loop.py
+++ b/environments/agent_loop.py
@@ -403,7 +403,7 @@ class HermesAgentLoop:
                                     # Run tool calls in a thread pool so backends that
                                     # use asyncio.run() internally (modal, docker, daytona) get
                                     # a clean event loop instead of deadlocking.
-                                    loop = asyncio.get_event_loop()
+                                    loop = asyncio.get_running_loop()
                                     # Capture current tool_name/args for the lambda
                                     _tn, _ta, _tid = tool_name, args, self.task_id
                                     tool_result = await loop.run_in_executor(
diff --git a/environments/benchmarks/terminalbench_2/terminalbench2_env.py b/environments/benchmarks/terminalbench_2/terminalbench2_env.py
index db6f6f58d73..0e88ac347fa 100644
--- a/environments/benchmarks/terminalbench_2/terminalbench2_env.py
+++ b/environments/benchmarks/terminalbench_2/terminalbench2_env.py
@@ -575,7 +575,7 @@ class TerminalBench2EvalEnv(HermesAgentBaseEnv):
                 # other tasks, tqdm updates, and timeout timers).
                 ctx = ToolContext(task_id)
                 try:
-                    loop = asyncio.get_event_loop()
+                    loop = asyncio.get_running_loop()
                     reward = await loop.run_in_executor(
                         None,  # default thread pool
                         self._run_tests, eval_item, ctx, task_name,
diff --git a/hermes_cli/web_server.py b/hermes_cli/web_server.py
index c14cf762a40..c4647787209 100644
--- a/hermes_cli/web_server.py
+++ b/hermes_cli/web_server.py
@@ -533,7 +533,7 @@ async def get_status():
     remote_health_body: dict | None = None
 
     if not gateway_running and _GATEWAY_HEALTH_URL:
-        loop = asyncio.get_event_loop()
+        loop = asyncio.get_running_loop()
         alive, remote_health_body = await loop.run_in_executor(
             None, _probe_gateway_health
         )
@@ -1845,7 +1845,7 @@ async def _start_device_code_flow(provider_id: str) -> Dict[str, Any]:
                     client_id=client_id,
                     scope=scope,
                 )
-        device_data = await asyncio.get_event_loop().run_in_executor(None, _do_nous_device_request)
+        device_data = await asyncio.get_running_loop().run_in_executor(None, _do_nous_device_request)
         sid, sess = _new_oauth_session("nous", "device_code")
         sess["device_code"] = str(device_data["device_code"])
         sess["interval"] = int(device_data["interval"])
@@ -2134,7 +2134,7 @@ async def submit_oauth_code(provider_id: str, body: OAuthSubmitBody, request: Re
     """Submit the auth code for PKCE flows. Token-protected."""
     _require_token(request)
     if provider_id == "anthropic":
-        return await asyncio.get_event_loop().run_in_executor(
+        return await asyncio.get_running_loop().run_in_executor(
             None, _submit_anthropic_pkce, body.session_id, body.code,
         )
     raise HTTPException(status_code=400, detail=f"submit not supported for {provider_id}")
diff --git a/tools/browser_cdp_tool.py b/tools/browser_cdp_tool.py
index d43d200b4a6..8e829556a57 100644
--- a/tools/browser_cdp_tool.py
+++ b/tools/browser_cdp_tool.py
@@ -132,9 +132,9 @@ async def _cdp_call(
                     }
                 )
             )
-            deadline = asyncio.get_event_loop().time() + timeout
+            deadline = asyncio.get_running_loop().time() + timeout
             while True:
-                remaining = deadline - asyncio.get_event_loop().time()
+                remaining = deadline - asyncio.get_running_loop().time()
                 if remaining <= 0:
                     raise TimeoutError(
                         f"Timed out attaching to target {target_id}"
@@ -166,9 +166,9 @@ async def _cdp_call(
             req["sessionId"] = session_id
         await ws.send(json.dumps(req))
 
-        deadline = asyncio.get_event_loop().time() + timeout
+        deadline = asyncio.get_running_loop().time() + timeout
         while True:
-            remaining = deadline - asyncio.get_event_loop().time()
+            remaining = deadline - asyncio.get_running_loop().time()
             if remaining <= 0:
                 raise TimeoutError(
                     f"Timed out waiting for response to {method}"