diff --git a/sentence_api/README.md b/sentence_api/README.md
index 3cdeb76..252ed6b 100644
--- a/sentence_api/README.md
+++ b/sentence_api/README.md
@@ -62,12 +62,22 @@ POST   /api/v1/admin/videos/{sha256}/process
 PUT    /api/v1/admin/videos/{sha256}/sentences/{index}
 PUT    /api/v1/admin/videos/{sha256}/sentences/{index}/split
 PUT    /api/v1/admin/videos/{sha256}/sentences/{index}/boundary
+PUT    /api/v1/admin/users/password
 DELETE /api/v1/admin/videos/{sha256}
 ```
 
 Admin endpoints use `X-Admin-Key` when `ADMIN_API_KEY` is configured. Assessment
 requests use `X-Client-Key` when `CLIENT_API_KEY` is configured.
 
+Administrators can set a local password for an SSO-linked account with:
+
+```bash
+curl -X PUT https://your-server/api/v1/admin/users/password \
+  -H "X-Admin-Key: $ADMIN_API_KEY" \
+  -H "Content-Type: application/json" \
+  -d '{"username":"bobcoc","password":"new-password"}'
+```
+
 `POST /api/v1/audio/sentence-boundaries` accepts an audio file from an
 authenticated client, generates boundaries in memory/temp storage only, and
 returns a sentence document. It does not register or archive the uploaded
diff --git a/sentence_api/main.py b/sentence_api/main.py
index 6dee872..a97d67d 100644
--- a/sentence_api/main.py
+++ b/sentence_api/main.py
@@ -44,6 +44,7 @@ from .models import (
     SentenceBoundaryDocument,
     SentenceExplanationRequest,
     SentenceExplanationResponse,
+    PasswordResetRequest,
     SentenceTextUpdate,
     UserDubShareSummary,
     SsoExchangeRequest,
@@ -441,6 +442,19 @@ def create_app(
             raise HTTPException(status_code=404, detail="User was not found.")
         return Response(status_code=204)
 
+    @application.put(
+        "/api/v1/admin/users/password",
+        status_code=204,
+        dependencies=[Depends(require_admin)],
+    )
+    def reset_user_password(
+        payload: PasswordResetRequest,
+    ) -> Response:
+        updated = video_repository.set_user_password(payload.username, payload.password)
+        if not updated:
+            raise HTTPException(status_code=404, detail="User was not found.")
+        return Response(status_code=204)
+
     @application.get("/api/v1/videos", response_model=VideoListResponse)
     def list_videos() -> VideoListResponse:
         return VideoListResponse(
diff --git a/sentence_api/models.py b/sentence_api/models.py
index f388ed5..331b4b9 100644
--- a/sentence_api/models.py
+++ b/sentence_api/models.py
@@ -92,6 +92,13 @@ class SentenceTextUpdate(BaseModel):
     language: Optional[str] = Field(default=None, max_length=32)
 
 
+class PasswordResetRequest(BaseModel):
+    model_config = ConfigDict(extra="forbid")
+
+    username: str = Field(min_length=3, max_length=50)
+    password: str = Field(min_length=8, max_length=128)
+
+
 class SentenceExplanationRequest(BaseModel):
     model_config = ConfigDict(extra="forbid")
 
diff --git a/sentence_api/repository.py b/sentence_api/repository.py
index a49b656..8bcda5f 100644
--- a/sentence_api/repository.py
+++ b/sentence_api/repository.py
@@ -984,6 +984,22 @@ class VideoRepository:
             return None
         return self.get_user_by_id(row["id"])
 
+    def set_user_password(self, username: str, password: str) -> bool:
+        """Set a local password for either a normal or SSO-linked account."""
+        username = username.strip()
+        if not username:
+            return False
+        with self._connect() as connection:
+            cursor = connection.execute(
+                """
+                UPDATE users
+                SET password_hash = ?
+                WHERE username = ? COLLATE NOCASE
+                """,
+                (hash_password(password), username),
+            )
+        return cursor.rowcount > 0
+
     def create_session(self, user_id: str) -> str:
         token = new_token()
         now = datetime.now(timezone.utc)
@@ -1205,4 +1221,3 @@ def _is_cjk_char(char: str) -> bool:
         or 0xF900 <= code <= 0xFAFF
         or 0x20000 <= code <= 0x2CEAF
     )
-
diff --git a/sentence_api/tests/test_api.py b/sentence_api/tests/test_api.py
index a2532f2..55e30c3 100644
--- a/sentence_api/tests/test_api.py
+++ b/sentence_api/tests/test_api.py
@@ -15,7 +15,7 @@ from sentence_api.store import BoundaryStore
 VIDEO_HASH = "a" * 64
 
 
-def make_client(tmp_path):
+def make_client(tmp_path, admin_api_key=""):
     index_path = tmp_path / "boundaries.json"
     index_path.write_text(
         json.dumps({
@@ -36,6 +36,7 @@ def make_client(tmp_path):
         Settings.from_env(),
         data_dir=tmp_path / "data",
         legacy_boundaries_file=index_path,
+        admin_api_key=admin_api_key,
     )
     settings.ensure_directories()
     client = TestClient(
@@ -116,6 +117,27 @@ def test_adhoc_audio_boundaries_require_login(tmp_path):
     assert response.status_code == 401
 
 
+def test_admin_can_reset_sso_user_password(tmp_path):
+    client = make_client(tmp_path, admin_api_key="test-admin-key")
+    repository = client.app.state.video_repository
+    created = repository.create_sso_user(
+        username="bobcoc",
+        nickname="Bob",
+        sso_provider="d1kt",
+    )
+    assert created is not None
+    assert repository.authenticate_user("bobcoc", "anything-123") is None
+
+    response = client.put(
+        "/api/v1/admin/users/password",
+        json={"username": "bobcoc", "password": "new-password-123"},
+        headers={"X-Admin-Key": "test-admin-key"},
+    )
+
+    assert response.status_code == 204
+    assert repository.authenticate_user("bobcoc", "new-password-123") is not None
+
+
 def test_sentence_explanation_requires_login(tmp_path):
     index_path = tmp_path / "boundaries.json"
     index_path.write_text("{}", encoding="utf-8")