diff --git a/renovate.json b/renovate.json
index 1bbc5c14..ff8cf1f2 100644
--- a/renovate.json
+++ b/renovate.json
@@ -19,6 +19,16 @@
       ],
       "allowedVersions": "<5.2"
     },
+    {
+      "groupName": "allowed redis versions",
+      "matchManagers": [
+        "pep621"
+      ],
+      "matchPackageNames": [
+        "redis"
+      ],
+      "allowedVersions": "<6.0.0"
+    },
     {
       "enabled": false,
       "groupName": "ignored js dependencies",
diff --git a/src/backend/pyproject.toml b/src/backend/pyproject.toml
index 2342a480..89de2af2 100644
--- a/src/backend/pyproject.toml
+++ b/src/backend/pyproject.toml
@@ -25,17 +25,16 @@ license = { file = "LICENSE" }
 readme = "README.md"
 requires-python = ">=3.12"
 dependencies = [
-    "beautifulsoup4==4.13.3",
-    "boto3==1.37.33",
+    "beautifulsoup4==4.13.4",
+    "boto3==1.38.9",
     "Brotli==1.1.0",
-    "celery[redis]==5.5.1",
+    "celery[redis]==5.5.2",
     "django-configurations==2.5.1",
     "django-cors-headers==4.7.0",
     "django-countries==7.6.1",
     "django-filter==25.1",
     "django-lasuite==0.0.7",
     "django-parler==2.3",
-    "redis==5.2.1",
     "django-redis==5.4.0",
     "django-storages[s3]==1.14.6",
     "django-timezone-field>=5.1",
@@ -48,17 +47,18 @@ dependencies = [
     "factory_boy==3.3.3",
     "gunicorn==23.0.0",
     "jsonschema==4.23.0",
-    "lxml==5.3.2",
+    "lxml==5.4.0",
     "markdown==3.8",
     "mozilla-django-oidc==4.0.1",
     "nested-multipart-parser==1.5.0",
-    "openai==1.73.0",
-    "psycopg[binary]==3.2.6",
-    "pycrdt==0.12.12", 
+    "openai==1.77.0",
+    "psycopg[binary]==3.2.7",
+    "pycrdt==0.12.15", 
     "PyJWT==2.10.1",
     "python-magic==0.4.27",
+    "redis<6.0.0",
     "requests==2.32.3",
-    "sentry-sdk==2.25.1",
+    "sentry-sdk==2.27.0",
     "whitenoise==6.9.0",
 ]
 
@@ -71,21 +71,21 @@ dependencies = [
 [project.optional-dependencies]
 dev = [
     "django-extensions==4.1",
-    "django-test-migrations==1.4.0",
-    "drf-spectacular-sidecar==2025.4.1",
+    "django-test-migrations==1.5.0",
+    "drf-spectacular-sidecar==2025.5.1",
     "freezegun==1.5.1",
     "ipdb==0.13.13",
-    "ipython==9.1.0",
+    "ipython==9.2.0",
     "pyfakefs==5.8.0",
     "pylint-django==2.6.1",
-    "pylint==3.3.6",
+    "pylint==3.3.7",
     "pytest-cov==6.1.1",
     "pytest-django==4.11.1",
     "pytest==8.3.5",
     "pytest-icdiff==0.9",
     "pytest-xdist==3.6.1",
     "responses==0.25.7",
-    "ruff==0.11.5",
+    "ruff==0.11.8",
     "types-requests==2.32.0.20250328",
 ]