diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index 370d75d..350fbca 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -23,22 +23,22 @@ classifiers = [
 ]
 
 dependencies = [
-    "fastapi==0.115.6",
-    "uvicorn[standard]==0.34.0",
-    "pydantic==2.10.5",
-    "pydantic-settings==2.7.1",
-    "sqlalchemy==2.0.36",
-    "aiosqlite==0.20.0",
+    "fastapi==0.141.1",
+    "uvicorn[standard]==0.52.4",
+    "pydantic==2.13.5",
+    "pydantic-settings==2.15.0",
+    "sqlalchemy==2.0.52",
+    "aiosqlite==0.22.1",
     "openai==1.58.1",
     "httpx==0.28.1",
     "passlib[bcrypt]==1.7.4",
     # Mirror requirements.txt: PyJWT is imported by app/core/auth.py; bcrypt 4.1+
     # removes __about__.__version__ which passlib 1.7.4 reads at runtime.
-    "pyjwt==2.8.0",
+    "pyjwt==2.14.0",
     "bcrypt==4.0.1",
     "email-validator==2.3.0",
-    "apscheduler==3.11.0",
-    "sentry-sdk==2.19.2",
+    "apscheduler==3.11.3",
+    "sentry-sdk==2.69.1",
 ]
 
 [project.optional-dependencies]
@@ -46,8 +46,8 @@ dev = [
     "pytest==8.3.4",
     "pytest-asyncio==0.24.0",
     "pytest-cov==6.0.0",
-    "pytest-mock==3.14.0",
-    "ruff==0.8.6",
+    "pytest-mock==3.15.1",
+    "ruff==0.16.7",
     "mypy==1.13.0",
 ]
 
diff --git a/backend/requirements-dev.txt b/backend/requirements-dev.txt
index d84d648..bba1bd9 100644
--- a/backend/requirements-dev.txt
+++ b/backend/requirements-dev.txt
@@ -3,6 +3,6 @@
 pytest==8.3.4
 pytest-asyncio==0.24.0
 pytest-cov==6.0.0
-pytest-mock==3.14.0
-ruff==0.8.6
+pytest-mock==3.15.1
+ruff==0.16.7
 mypy==1.13.0
diff --git a/backend/requirements.txt b/backend/requirements.txt
index 9d21d24..4f0c677 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -2,14 +2,14 @@
 # All versions pinned for reproducible builds
 
 # Web Framework
-fastapi==0.115.6
-uvicorn[standard]==0.34.0
-pydantic==2.10.5
-pydantic-settings==2.7.1
+fastapi==0.141.1
+uvicorn[standard]==0.52.4
+pydantic==2.13.5
+pydantic-settings==2.15.0
 
 # Database
-sqlalchemy==2.0.36
-aiosqlite==0.20.0
+sqlalchemy==2.0.52
+aiosqlite==0.22.1
 
 # LLM / AI
 openai==1.58.1
@@ -18,13 +18,13 @@ openai==1.58.1
 httpx==0.28.1
 
 # Authentication
-PyJWT==2.8.0
+PyJWT==2.14.0
 bcrypt==4.0.1
 email-validator==2.3.0
 passlib[bcrypt]==1.7.4
 
 # Scheduling
-apscheduler==3.11.0
+apscheduler==3.11.3
 
 # Monitoring
-sentry-sdk==2.19.2
+sentry-sdk==2.69.1