diff --git a/backend/requirements.txt b/backend/requirements.txt
index d59c2fa..a5a5230 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -15,7 +15,7 @@ aiosqlite==0.19.0
 # Authentication and Security
 python-jose[cryptography]==3.4.0
 passlib[bcrypt]==1.7.4
-python-multipart==0.0.20
+python-multipart==0.0.27
 bcrypt==4.1.2
 cryptography==46.0.7
 
@@ -25,7 +25,7 @@ celery==5.3.4
 
 # HTTP and API
 httpx==0.25.2
-requests==2.32.5
+requests==2.33.0
 aiofiles==23.2.1
 
 # Data Processing and Reports
@@ -39,7 +39,7 @@ emails==0.6
 jinja2==3.1.6
 
 # Validation and Serialization
-marshmallow==4.0.1
+marshmallow==4.1.2
 cerberus==1.3.5
 
 # Utilities
@@ -53,7 +53,7 @@ forex-python==1.8
 
 # PDF and Document Generation
 reportlab==4.0.7
-weasyprint==60.2
+weasyprint==68.0
 
 # Production and Monitoring
 gunicorn==23.0.0
@@ -62,7 +62,7 @@ structlog==23.2.0
 psutil==5.9.6
 
 # Environment and Configuration
-python-dotenv==1.0.0
+python-dotenv==1.2.2
 
 # Development and Testing (optional, use requirements-dev.txt for dev environment)
 # pytest==7.4.3
diff --git a/requirements-linux.txt b/requirements-linux.txt
index df9ce22..4d920f4 100644
--- a/requirements-linux.txt
+++ b/requirements-linux.txt
@@ -14,7 +14,7 @@ aiosqlite==0.19.0
 # Authentication and Security
 python-jose[cryptography]==3.4.0
 passlib[bcrypt]==1.7.4
-python-multipart==0.0.26
+python-multipart==0.0.27
 bcrypt==4.1.2
 cryptography==46.0.7
 
diff --git a/requirements-minimal.txt b/requirements-minimal.txt
index 6943fe4..a202cd1 100644
--- a/requirements-minimal.txt
+++ b/requirements-minimal.txt
@@ -13,7 +13,7 @@ aiosqlite==0.19.0
 # Authentication
 python-jose[cryptography]==3.4.0
 passlib[bcrypt]==1.7.4
-python-multipart==0.0.26
+python-multipart==0.0.27
 
 # Basic utilities
 python-dotenv==1.2.2
diff --git a/requirements-windows.txt b/requirements-windows.txt
index f654aac..ce2e204 100644
--- a/requirements-windows.txt
+++ b/requirements-windows.txt
@@ -13,7 +13,7 @@ psycopg2==2.9.9
 # Authentication and Security
 python-jose[cryptography]==3.4.0
 passlib[bcrypt]==1.7.4
-python-multipart==0.0.26
+python-multipart==0.0.27
 bcrypt==4.1.2
 cryptography==46.0.7
 
diff --git a/requirements.txt b/requirements.txt
index 300b981..3c8ec61 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,7 @@ psycopg2==2.9.9; sys_platform == "win32"
 # Authentication and Security
 python-jose[cryptography]==3.4.0
 passlib[bcrypt]==1.7.4
-python-multipart==0.0.26
+python-multipart==0.0.27
 bcrypt==4.1.2
 cryptography==46.0.7