diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index 595d473..d8297a7 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -6,28 +6,32 @@ authors = []
 readme = "README.md"
 requires-python = ">=3.11"
 dependencies = [
-    "fastapi>=0.116.1",
-    "temporalio>=1.6.0",
-    "boto3>=1.34.0",
-    "pydantic>=2.0.0",
-    "pyyaml>=6.0",
-    "docker>=7.0.0",
-    "aiofiles>=23.0.0",
-    "uvicorn>=0.30.0",
-    "aiohttp>=3.12.15",
-    "fastmcp",
+    "aiofiles==25.1.0",
+    "aiohttp==3.13.2",
+    "boto3==1.40.68",
+    "docker==7.1.0",
+    "fastapi==0.121.0",
+    "fastmcp==2.13.0.2",
+    "pydantic==2.12.4",
+    "pyyaml==6.0.3",
+    "temporalio==1.18.2",
+    "uvicorn==0.38.0",
 ]
 
 [project.optional-dependencies]
 dev = [
-    "pytest>=8.0.0",
-    "pytest-asyncio>=0.23.0",
-    "pytest-benchmark>=4.0.0",
-    "pytest-cov>=5.0.0",
-    "pytest-xdist>=3.5.0",
-    "pytest-mock>=3.12.0",
-    "httpx>=0.27.0",
-    "ruff>=0.1.0",
+    "httpx==0.28.1",
+    "pytest==8.4.2",
+    "pytest-asyncio==1.2.0",
+    "pytest-benchmark==5.2.1",
+    "pytest-cov==7.0.0",
+    "pytest-mock==3.15.1",
+    "pytest-xdist==3.8.0",
+]
+lints = [
+    "bandit==1.8.6",
+    "mypy==1.18.2",
+    "ruff==0.14.4",
 ]
 
 [tool.pytest.ini_options]