diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 69d8ba9..eac63af 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -24,8 +24,8 @@ build:docker:
     - docker buildx create --use
   script:
     - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
-    - IMAGE=$CI_REGISTRY/$CI_PROJECT_PATH/$CI_BUILD_REF_NAME:$CI_BUILD_REF
-    - docker buildx build --progress=plain --platform linux/amd64,linux/arm64 --build-arg VERSION=$CI_BUILD_REF_NAME --build-arg COMMIT=$CI_COMMIT_SHA --tag $IMAGE --push .
+    - IMAGE=$CI_REGISTRY/$CI_PROJECT_PATH/$CI_COMMIT_REF_NAME:$CI_COMMIT_SHA
+    - docker buildx build --progress=plain --platform linux/amd64,linux/arm64 --build-arg VERSION=$CI_COMMIT_REF_NAME --build-arg COMMIT=$CI_COMMIT_SHA --tag $IMAGE --push .
     - docker buildx imagetools inspect $IMAGE
     - echo "CS_IMAGE=$IMAGE" > container_scanning.env
   artifacts:
@@ -39,7 +39,7 @@ build:apt:
   rules:
     - if: $CI_COMMIT_TAG
       variables:
-        VERSION: $CI_BUILD_REF_NAME
+        VERSION: $CI_COMMIT_REF_NAME
     - if: $CI_COMMIT_BRANCH && $CI_COMMIT_BRANCH != $CI_DEFAULT_BRANCH
       changes:
         - app/**/*
@@ -72,7 +72,7 @@ build:apt:
     # cd into "build/"
     - cd build/
   script:
-    # set version based on value in "$CI_BUILD_REF_NAME"
+    # set version based on value in "$CI_COMMIT_REF_NAME"
     - sed -i -E 's/(Version\:\s)0.0/\1'"$VERSION"'/g' DEBIAN/control
     # build
     - dpkg -b . build.deb
@@ -89,7 +89,7 @@ build:pacman:
   rules:
     - if: $CI_COMMIT_TAG
       variables:
-        VERSION: $CI_BUILD_REF_NAME
+        VERSION: $CI_COMMIT_REF_NAME
     - if: $CI_COMMIT_BRANCH && $CI_COMMIT_BRANCH != $CI_DEFAULT_BRANCH
       changes:
         - app/**/*
@@ -265,21 +265,21 @@ deploy:docker:
   extends: .deploy
   stage: deploy
   before_script:
-    - echo "Building docker image for commit $CI_COMMIT_SHA with version $CI_BUILD_REF_NAME"
+    - echo "Building docker image for commit $CI_COMMIT_SHA with version $CI_COMMIT_REF_NAME"
   script:
     - echo "========== GitLab-Registry =========="
     - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
-    - IMAGE=$CI_REGISTRY/$CI_PROJECT_PATH/$CI_BUILD_REF_NAME
-    - docker build . --build-arg VERSION=$CI_BUILD_REF_NAME --build-arg COMMIT=$CI_COMMIT_SHA --tag $IMAGE:$CI_BUILD_REF_NAME
-    - docker build . --build-arg VERSION=$CI_BUILD_REF_NAME --build-arg COMMIT=$CI_COMMIT_SHA --tag $IMAGE:latest
-    - docker push $IMAGE:$CI_BUILD_REF_NAME
+    - IMAGE=$CI_REGISTRY/$CI_PROJECT_PATH/$CI_COMMIT_REF_NAME
+    - docker build . --build-arg VERSION=$CI_COMMIT_REF_NAME --build-arg COMMIT=$CI_COMMIT_SHA --tag $IMAGE:$CI_COMMIT_REF_NAME
+    - docker build . --build-arg VERSION=$CI_COMMIT_REF_NAME --build-arg COMMIT=$CI_COMMIT_SHA --tag $IMAGE:latest
+    - docker push $IMAGE:$CI_COMMIT_REF_NAME
     - docker push $IMAGE:latest
     - echo "========== Docker-Hub =========="
     - docker login -u $PUBLIC_REGISTRY_USER -p $PUBLIC_REGISTRY_TOKEN
     - IMAGE=$PUBLIC_REGISTRY_USER/$CI_PROJECT_NAME
-    - docker build . --build-arg VERSION=$CI_BUILD_REF_NAME --build-arg COMMIT=$CI_COMMIT_SHA --tag $IMAGE:$CI_BUILD_REF_NAME
-    - docker build . --build-arg VERSION=$CI_BUILD_REF_NAME --build-arg COMMIT=$CI_COMMIT_SHA --tag $IMAGE:latest
-    - docker push $IMAGE:$CI_BUILD_REF_NAME
+    - docker build . --build-arg VERSION=$CI_COMMIT_REF_NAME --build-arg COMMIT=$CI_COMMIT_SHA --tag $IMAGE:$CI_COMMIT_REF_NAME
+    - docker build . --build-arg VERSION=$CI_COMMIT_REF_NAME --build-arg COMMIT=$CI_COMMIT_SHA --tag $IMAGE:latest
+    - docker push $IMAGE:$CI_COMMIT_REF_NAME
     - docker push $IMAGE:latest
 
 deploy:apt:
@@ -333,9 +333,9 @@ deploy:pacman:
     - source .PKGBUILD/PKGBUILD
     - source version.env
     # fastapi-dls-1.0-1-any.pkg.tar.zst
-    - BUILD_NAME=${pkgname}-${CI_BUILD_REF_NAME}-${pkgrel}-any.pkg.tar.zst
+    - BUILD_NAME=${pkgname}-${CI_COMMIT_REF_NAME}-${pkgrel}-any.pkg.tar.zst
     - PACKAGE_NAME=${pkgname}
-    - PACKAGE_VERSION=${CI_BUILD_REF_NAME}
+    - PACKAGE_VERSION=${CI_COMMIT_REF_NAME}
     - PACKAGE_ARCH=any
     - EXPORT_NAME=${BUILD_NAME}
     - 'echo "PACKAGE_NAME:    ${PACKAGE_NAME}"'
diff --git a/README.md b/README.md
index b972c92..4d78b1e 100644
--- a/README.md
+++ b/README.md
@@ -310,7 +310,7 @@ Packages are available here:
 
 Successful tested with:
 
-- Debian 12 (Bookworm) (works but not recommended because it is currently in *testing* state)
+- Debian 12 (Bookworm)
 - Ubuntu 22.10 (Kinetic Kudu)
 
 Not working with:
diff --git a/app/main.py b/app/main.py
index 9713f20..5efca11 100644
--- a/app/main.py
+++ b/app/main.py
@@ -195,6 +195,12 @@ async def _leases(request: Request, origin: bool = False):
     return JSONr(response)
 
 
+@app.delete('/-/leases/expired', summary='* Leases')
+async def _lease_delete_expired(request: Request):
+    Lease.delete_expired(db)
+    return Response(status_code=201)
+
+
 @app.delete('/-/lease/{lease_ref}', summary='* Lease')
 async def _lease_delete(request: Request, lease_ref: str):
     if Lease.delete(db, lease_ref) == 1:
diff --git a/app/orm.py b/app/orm.py
index 0eaf511..13d1210 100644
--- a/app/orm.py
+++ b/app/orm.py
@@ -291,6 +291,14 @@ class Lease(Base):
         session.close()
         return deletions
 
+    @staticmethod
+    def delete_expired(engine: Engine) -> int:
+        session = sessionmaker(bind=engine)()
+        deletions = session.query(Lease).filter(Lease.lease_expires <= datetime.utcnow()).delete()
+        session.commit()
+        session.close()
+        return deletions
+
     @staticmethod
     def calculate_renewal(renewal_period: float, delta: timedelta) -> timedelta:
         """
diff --git a/requirements.txt b/requirements.txt
index 2aaec8d..a460548 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,8 +1,8 @@
-fastapi==0.95.1
+fastapi==0.97.0
 uvicorn[standard]==0.22.0
 python-jose==3.3.0
-pycryptodome==3.17
+pycryptodome==3.18.0
 python-dateutil==2.8.2
-sqlalchemy==2.0.12
+sqlalchemy==2.0.16
 markdown==3.4.3
 python-dotenv==1.0.0