diff --git a/README_zh-CN.md b/README_zh-CN.md
index 2d5fbc5..7a92bbd 100644
--- a/README_zh-CN.md
+++ b/README_zh-CN.md
@@ -80,8 +80,8 @@ labelu
 # 安装miniconda
 # https://docs.conda.io/en/latest/miniconda.html
 
-# 创建虚拟环境(python = 3.8)
-conda create -n labelu python=3.8
+# 创建虚拟环境(python = 3.11)
+conda create -n labelu python=3.11
 
 # 激活虚拟环境
 conda activate labelu
diff --git a/labelu/tests/internal/adapter/routers/test_attachment.py b/labelu/tests/internal/adapter/routers/test_attachment.py
index 6f9c136..1f19f90 100644
--- a/labelu/tests/internal/adapter/routers/test_attachment.py
+++ b/labelu/tests/internal/adapter/routers/test_attachment.py
@@ -221,7 +221,7 @@ def test_task_delete_task_file(
 
         # run
         data = {"attachment_ids": [attachment_id]}
-        r = client.delete(
+        r = client.request("delete",
             f"{settings.API_V1_STR}/tasks/{task.id}/attachments",
             headers=testuser_token_headers,
             json=data,
@@ -242,7 +242,7 @@ def test_task_delete_task_file_not_found_task(
 
         # run
         data = {"attachment_ids": [1]}
-        r = client.delete(
+        r = client.request("delete",
             f"{settings.API_V1_STR}/tasks/0/attachments",
             headers=testuser_token_headers,
             json=data,
@@ -270,7 +270,7 @@ def test_task_delete_task_file_not_owner(
 
         # run
         data = {"attachment_ids": [1]}
-        r = client.delete(
+        r = client.request("delete",
             f"{settings.API_V1_STR}/tasks/{task.id}/attachments",
             headers=testuser_token_headers,
             json=data,
diff --git a/labelu/tests/internal/adapter/routers/test_pre_annotation.py b/labelu/tests/internal/adapter/routers/test_pre_annotation.py
index b6900dc..bd7701d 100644
--- a/labelu/tests/internal/adapter/routers/test_pre_annotation.py
+++ b/labelu/tests/internal/adapter/routers/test_pre_annotation.py
@@ -440,7 +440,7 @@ def test_pre_annotation_delete(
 
         # run
         data = {"pre_annotation_ids": [pre_annotations[0].id]}
-        r = client.delete(
+        r = client.request("delete",
             f"{settings.API_V1_STR}/tasks/{task.id}/pre_annotations",
             headers=testuser_token_headers,
             json=data,
@@ -467,7 +467,7 @@ def test_pre_annotations_delete_not_found(
 
         # run
         data = {"pre_annotation_ids": [1, 2]}
-        r = client.delete(
+        r = client.request("delete",
             f"{settings.API_V1_STR}/tasks/{task.id}/pre_annotations",
             headers=testuser_token_headers,
             json=data,
diff --git a/labelu/tests/internal/adapter/routers/test_sample.py b/labelu/tests/internal/adapter/routers/test_sample.py
index e597fcc..7b37588 100644
--- a/labelu/tests/internal/adapter/routers/test_sample.py
+++ b/labelu/tests/internal/adapter/routers/test_sample.py
@@ -572,7 +572,7 @@ def test_sample_delete(
 
         # run
         data = {"sample_ids": [samples[0].id]}
-        r = client.delete(
+        r = client.request("delete",
             f"{settings.API_V1_STR}/tasks/{task.id}/samples",
             headers=testuser_token_headers,
             json=data,
@@ -599,7 +599,7 @@ def test_sample_delete_not_found(
 
         # run
         data = {"sample_ids": [1, 2]}
-        r = client.delete(
+        r = client.request("delete",
             f"{settings.API_V1_STR}/tasks/{task.id}/samples",
             headers=testuser_token_headers,
             json=data,
diff --git a/labelu/tests/internal/adapter/routers/test_task.py b/labelu/tests/internal/adapter/routers/test_task.py
index dfcb3f7..ca96bc4 100644
--- a/labelu/tests/internal/adapter/routers/test_task.py
+++ b/labelu/tests/internal/adapter/routers/test_task.py
@@ -296,7 +296,7 @@ def test_task_delete(
         )
 
         # run
-        r = client.delete(
+        r = client.request("delete",
             f"{settings.API_V1_STR}/tasks/{task.id}", headers=testuser_token_headers
         )
 
@@ -312,7 +312,7 @@ def test_task_delete_not_found(
         # prepare data
 
         # run
-        r = client.delete(
+        r = client.request("delete",
             f"{settings.API_V1_STR}/tasks/0", headers=testuser_token_headers
         )
 
@@ -338,7 +338,7 @@ def test_task_delete_no_permission(
         )
 
         # run
-        r = client.delete(
+        r = client.request("delete",
             f"{settings.API_V1_STR}/tasks/{task.id}", headers=testuser_token_headers
         )
 
diff --git a/pyproject.toml b/pyproject.toml
index a61ced4..b805eda 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -12,8 +12,8 @@ packages = [{include = "labelu"}]
 labelu = "labelu.main:cli"
 
 [tool.poetry.dependencies]
-python = "^3.8"
-fastapi = "^0.86.0"
+python = "^3.11"
+fastapi = "^0.90.0"
 loguru = "^0.6.0"
 sqlalchemy = "^1.4.43"
 passlib = {extras = ["bcrypt"], version = "^1.7.4"}