diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 07cd061..1d96772 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -57,7 +57,7 @@ jobs:
         # your codebase is analyzed, see https://docs.github.com/en/code-security/code-scanning/creating-an-advanced-setup-for-code-scanning/codeql-code-scanning-for-compiled-languages
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@v7
 
     # Add any setup steps before running the `github/codeql-action/init` action.
     # This includes steps like installing compilers or runtimes (`actions/setup-node`
@@ -67,7 +67,7 @@ jobs:
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@v3
+      uses: github/codeql-action/init@v4
       with:
         languages: ${{ matrix.language }}
         build-mode: ${{ matrix.build-mode }}
@@ -95,6 +95,6 @@ jobs:
         exit 1
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v3
+      uses: github/codeql-action/analyze@v4
       with:
         category: "/language:${{matrix.language}}"
diff --git a/.github/workflows/python-package.yml b/.github/workflows/python-package.yml
index f146b70..a8f13b5 100644
--- a/.github/workflows/python-package.yml
+++ b/.github/workflows/python-package.yml
@@ -16,10 +16,10 @@ jobs:
         python-version: ["3.10", "3.11"]
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v7
     
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@v6
       with:
         python-version: ${{ matrix.python-version }}
         
diff --git a/.github/workflows/python-publish.yml b/.github/workflows/python-publish.yml
index 82f8dbd..96bf4ac 100644
--- a/.github/workflows/python-publish.yml
+++ b/.github/workflows/python-publish.yml
@@ -20,9 +20,9 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: "3.x"
 
@@ -33,7 +33,7 @@ jobs:
           python -m build
 
       - name: Upload distributions
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: release-dists
           path: dist/
@@ -59,7 +59,7 @@ jobs:
 
     steps:
       - name: Retrieve release distributions
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v8
         with:
           name: release-dists
           path: dist/
diff --git a/backend/requirements.txt b/backend/requirements.txt
index 128ada2..c18da58 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -1,11 +1,11 @@
-fastapi>=0.104.1
+fastapi>=0.139.0
 uvicorn[standard]>=0.24.0
 pydantic>=2.13.4
 pydantic-settings>=2.1.0
 ollama>=0.2.0
 openai>=1.0.0
-httpx>=0.27.0
-python-dotenv>=1.0.0
+httpx>=0.28.1
+python-dotenv>=1.2.2
 tenacity>=9.1.4
 sentence-transformers>=5.6.0
 faiss-cpu>=1.14.3