diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5dbe60a..dfacc7a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,14 @@
 
 All notable changes to the OpenClaw Home Assistant Integration will be documented in this file.
 
+## [0.1.39] - 2026-02-20
+
+### Fixed
+- Aligned gateway chat requests with OpenClaw session behavior by sending OpenAI `user` with the stable session ID.
+- Added `x-openclaw-session-key` request header for explicit session routing on OpenClaw gateways.
+- Improves multi-turn continuity where `/v1/chat/completions` would otherwise default to stateless per-request sessions.
+- Removed per-request chat-history replay to avoid unnecessary prompt growth when gateway session memory is active.
+
 ## [0.1.37] - 2026-02-20
 
 ### Fixed
diff --git a/custom_components/openclaw/__init__.py b/custom_components/openclaw/__init__.py
index 26a6f7e..5b0a610 100644
--- a/custom_components/openclaw/__init__.py
+++ b/custom_components/openclaw/__init__.py
@@ -78,7 +78,7 @@ _CARD_PATH = Path(__file__).parent / "www" / _CARD_FILENAME
 # URL at which the card JS is served (registered via register_static_path)
 _CARD_STATIC_URL = f"/openclaw/{_CARD_FILENAME}"
 # Versioned URL used for Lovelace resource registration to avoid stale browser cache
-_CARD_URL = f"{_CARD_STATIC_URL}?v=0.1.37"
+_CARD_URL = f"{_CARD_STATIC_URL}?v=0.1.39"
 
 OpenClawConfigEntry = ConfigEntry
 
@@ -386,6 +386,7 @@ def _async_register_services(hass: HomeAssistant) -> None:
             system_prompt = apply_context_policy(raw_context, max_chars, strategy)
 
             _append_chat_history(hass, session_id, "user", message)
+
             response = await client.async_send_message(
                 message=message,
                 session_id=session_id,
diff --git a/custom_components/openclaw/__pycache__/__init__.cpython-312.pyc b/custom_components/openclaw/__pycache__/__init__.cpython-312.pyc
index b775949..69d0de4 100644
Binary files a/custom_components/openclaw/__pycache__/__init__.cpython-312.pyc and b/custom_components/openclaw/__pycache__/__init__.cpython-312.pyc differ
diff --git a/custom_components/openclaw/__pycache__/api.cpython-312.pyc b/custom_components/openclaw/__pycache__/api.cpython-312.pyc
index 1e25152..8aff5c3 100644
Binary files a/custom_components/openclaw/__pycache__/api.cpython-312.pyc and b/custom_components/openclaw/__pycache__/api.cpython-312.pyc differ
diff --git a/custom_components/openclaw/api.py b/custom_components/openclaw/api.py
index 8d4fc10..4007e88 100644
--- a/custom_components/openclaw/api.py
+++ b/custom_components/openclaw/api.py
@@ -193,6 +193,7 @@ class OpenClawApiClient:
         }
         if session_id:
             payload["session_id"] = session_id
+            payload["user"] = session_id
         if model:
             payload["model"] = model
 
@@ -200,6 +201,7 @@ class OpenClawApiClient:
         headers = self._headers()
         if session_id:
             headers["X-Session-Id"] = session_id
+            headers["x-openclaw-session-key"] = session_id
 
         session = await self._get_session()
         url = f"{self._base_url}{API_CHAT_COMPLETIONS}"
@@ -253,12 +255,14 @@ class OpenClawApiClient:
         }
         if session_id:
             payload["session_id"] = session_id
+            payload["user"] = session_id
         if model:
             payload["model"] = model
 
         headers = self._headers()
         if session_id:
             headers["X-Session-Id"] = session_id
+            headers["x-openclaw-session-key"] = session_id
 
         session = await self._get_session()
         url = f"{self._base_url}{API_CHAT_COMPLETIONS}"
diff --git a/custom_components/openclaw/manifest.json b/custom_components/openclaw/manifest.json
index 79dc099..c18c93b 100644
--- a/custom_components/openclaw/manifest.json
+++ b/custom_components/openclaw/manifest.json
@@ -8,7 +8,7 @@
   "iot_class": "local_polling",
   "issue_tracker": "https://github.com/techartdev/OpenClawHomeAssistant/issues",
   "requirements": [],
-  "version": "0.1.37",
+  "version": "0.1.39",
   "dependencies": ["conversation"],
   "after_dependencies": ["hassio", "lovelace"]
 }
diff --git a/www/openclaw-chat-card.js b/www/openclaw-chat-card.js
index 5807994..bbaa813 100644
--- a/www/openclaw-chat-card.js
+++ b/www/openclaw-chat-card.js
@@ -1,7 +1,7 @@
 (async () => {
   try {
     if (!customElements.get("openclaw-chat-card")) {
-      const src = "/openclaw/openclaw-chat-card.js?v=0.1.37";
+      const src = "/openclaw/openclaw-chat-card.js?v=0.1.39";
       console.info("OpenClaw loader importing", src);
       await import(src);
     }