diff --git a/pyproject.toml b/pyproject.toml
index ae76a77..d308655 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -7,9 +7,9 @@ readme = "README.md"
 # 3.13), because "does this script make sense" is answered by that interpreter and its packages.
 requires-python = ">= 3.13"
 dependencies = [
-    "fastapi==0.139.0",
-    "pydantic==2.13.4",
-    "uvicorn[standard]==0.51.0",
+    "fastapi==0.162.2",
+    "pydantic==2.14.3",
+    "uvicorn[standard]==0.54.0",
     "jedi==0.20.1",
     "pyflakes==4.1.0",
 ]
@@ -19,17 +19,17 @@ dependencies = [
 
 [project.optional-dependencies]
 formatting = [
-    "ruff==0.15.21",
-    "mypy==2.2.0",
+    "ruff==0.17.4",
+    "mypy==2.4.1",
     "mantid-python-script-lsp[test]",
 ]
 
 test = [
-    "pytest==9.1.1",
-    "pytest-asyncio==1.4.0",
+    "pytest==9.2.0",
+    "pytest-asyncio==1.4.1.post1",
     "pytest-cov==7.1.0",
     "pytest-random-order==1.2.0",
-    "pytest-env==1.6.0",
+    "pytest-env==1.8.5",
     "httpx==0.28.1",
 ]