diff --git a/requirements-base.txt b/requirements-base.txt
index 20c438599..524860f0a 100644
--- a/requirements-base.txt
+++ b/requirements-base.txt
@@ -3,7 +3,7 @@
 
 # 数据库（基础层）
 psycopg2-binary==2.9.10
-psycopg[binary]>=3.2.2
+psycopg[binary]==3.2.2
 sqlalchemy==2.0.35
 alembic==1.13.3
 
diff --git a/requirements-dev.txt b/requirements-dev.txt
index e0959a8cc..041915523 100755
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -11,4 +11,4 @@ pytest==8.3.3
 pytest-asyncio==0.24.0
 pytest-cov==6.0.0
 pytest-timeout==2.3.1
-diff-cover>=8.0
+diff-cover==8.0.3
diff --git a/requirements-worker.txt b/requirements-worker.txt
index 2a01cb870..f96035c16 100644
--- a/requirements-worker.txt
+++ b/requirements-worker.txt
@@ -2,13 +2,13 @@
 # 这些包体积大，API 服务不需要安装
 
 # 数值计算
-numpy>=1.24.0
+numpy==1.26.4
 
 # 科学计算
-scipy>=1.10.0
+scipy==1.13.1
 
 # 计算机视觉（视频去重、帧处理）
-opencv-python-headless>=4.8.0
+opencv-python-headless==4.10.0.84
 
 # 图像处理
 Pillow==10.4.0