diff --git a/backend/requirements-dev.txt b/backend/requirements-dev.txt
index ff61c4f..0b91864 100644
--- a/backend/requirements-dev.txt
+++ b/backend/requirements-dev.txt
@@ -1,7 +1,7 @@
 # Development and testing dependencies
 pytest==7.4.3
 pytest-asyncio==0.21.1
-black==25.11.0
+black==26.3.1
 isort==5.12.0
 flake8==6.1.0
 
diff --git a/backend/requirements.txt b/backend/requirements.txt
index eb119d4..de5977c 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -17,7 +17,7 @@ python-jose[cryptography]==3.3.0
 passlib[bcrypt]==1.7.4
 python-multipart==0.0.20
 bcrypt==4.1.2
-cryptography==46.0.4
+cryptography==46.0.5
 
 # Session and Cache Management
 redis==5.0.1
diff --git a/requirements-linux.txt b/requirements-linux.txt
index 46ef968..d90d206 100644
--- a/requirements-linux.txt
+++ b/requirements-linux.txt
@@ -16,7 +16,7 @@ python-jose[cryptography]==3.3.0
 passlib[bcrypt]==1.7.4
 python-multipart==0.0.22
 bcrypt==4.1.2
-cryptography==46.0.4
+cryptography==46.0.5
 
 # Session and Cache Management
 redis==5.0.1
@@ -37,7 +37,7 @@ emails==0.6
 jinja2==3.1.6
 
 # Validation and Serialization
-marshmallow==4.2.2
+marshmallow==4.1.2
 cerberus==1.3.5
 
 # Utilities
diff --git a/requirements-windows.txt b/requirements-windows.txt
index 40d8de0..4a69d7e 100644
--- a/requirements-windows.txt
+++ b/requirements-windows.txt
@@ -15,7 +15,7 @@ python-jose[cryptography]==3.3.0
 passlib[bcrypt]==1.7.4
 python-multipart==0.0.22
 bcrypt==4.1.2
-cryptography==46.0.4
+cryptography==46.0.5
 
 # Session and Cache Management
 redis==5.0.1
@@ -36,7 +36,7 @@ emails==0.6
 jinja2==3.1.6
 
 # Validation and Serialization
-marshmallow==4.2.2
+marshmallow==4.1.2
 cerberus==1.3.5
 
 # Utilities
@@ -62,7 +62,7 @@ python-json-logger==2.0.7
 # Development and Testing
 pytest==7.4.3
 pytest-asyncio==0.21.1
-black==26.1.0
+black==26.3.1
 isort==5.12.0
 flake8==6.1.0
 mypy==1.6.1
diff --git a/requirements.txt b/requirements.txt
index b85abd0..1b7b73c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,7 +17,7 @@ python-jose[cryptography]==3.3.0
 passlib[bcrypt]==1.7.4
 python-multipart==0.0.22
 bcrypt==4.1.2
-cryptography==46.0.4
+cryptography==46.0.5
 
 # Session and Cache Management
 redis==5.0.1
@@ -38,7 +38,7 @@ emails==0.6
 jinja2==3.1.6
 
 # Validation and Serialization
-marshmallow==4.2.2
+marshmallow==4.1.2
 cerberus==1.3.5
 
 # Utilities
@@ -67,7 +67,7 @@ python-json-logger==2.0.7
 # Development and Testing (optional for production)
 pytest==7.4.3
 pytest-asyncio==0.21.1
-black==26.1.0
+black==26.3.1
 isort==5.12.0
 flake8==6.1.0
 mypy==1.6.1