diff --git a/project1/terraform.tfstate b/project1/terraform.tfstate
index 0dd0865..21b4466 100644
--- a/project1/terraform.tfstate
+++ b/project1/terraform.tfstate
@@ -1,181 +1,8 @@
 {
   "version": 4,
   "terraform_version": "0.12.24",
-  "serial": 21,
+  "serial": 24,
   "lineage": "6efb1875-c719-ba5d-da5b-08b8b95e015f",
   "outputs": {},
-  "resources": [
-    {
-      "mode": "managed",
-      "type": "aws_instance",
-      "name": "cedric-instance1",
-      "provider": "provider.aws",
-      "instances": [
-        {
-          "schema_version": 1,
-          "attributes": {
-            "ami": "ami-01a6e31ac994bbc09",
-            "arn": "arn:aws:ec2:eu-west-2:031660489033:instance/i-05de7fb7bb5344d0e",
-            "associate_public_ip_address": true,
-            "availability_zone": "eu-west-2a",
-            "cpu_core_count": 1,
-            "cpu_threads_per_core": 1,
-            "credit_specification": [
-              {
-                "cpu_credits": "standard"
-              }
-            ],
-            "disable_api_termination": false,
-            "ebs_block_device": [],
-            "ebs_optimized": false,
-            "ephemeral_block_device": [],
-            "get_password_data": false,
-            "hibernation": false,
-            "host_id": null,
-            "iam_instance_profile": "",
-            "id": "i-05de7fb7bb5344d0e",
-            "instance_initiated_shutdown_behavior": null,
-            "instance_state": "running",
-            "instance_type": "t2.micro",
-            "ipv6_address_count": 0,
-            "ipv6_addresses": [],
-            "key_name": "cedric",
-            "metadata_options": [
-              {
-                "http_endpoint": "enabled",
-                "http_put_response_hop_limit": 1,
-                "http_tokens": "optional"
-              }
-            ],
-            "monitoring": false,
-            "network_interface": [],
-            "network_interface_id": null,
-            "outpost_arn": "",
-            "password_data": "",
-            "placement_group": "",
-            "primary_network_interface_id": "eni-028e3ee75982e4331",
-            "private_dns": "ip-172-31-21-118.eu-west-2.compute.internal",
-            "private_ip": "172.31.21.118",
-            "public_dns": "ec2-18-130-0-243.eu-west-2.compute.amazonaws.com",
-            "public_ip": "18.130.0.243",
-            "root_block_device": [
-              {
-                "delete_on_termination": true,
-                "device_name": "/dev/xvda",
-                "encrypted": false,
-                "iops": 100,
-                "kms_key_id": "",
-                "volume_id": "vol-0573fb38c464d83f9",
-                "volume_size": 8,
-                "volume_type": "gp2"
-              }
-            ],
-            "security_groups": [
-              "default"
-            ],
-            "source_dest_check": true,
-            "subnet_id": "subnet-d9ae3aa3",
-            "tags": {
-              "Name": "cedric-instance1"
-            },
-            "tenancy": "default",
-            "timeouts": null,
-            "user_data": null,
-            "user_data_base64": null,
-            "volume_tags": {},
-            "vpc_security_group_ids": [
-              "sg-64368d06"
-            ]
-          },
-          "private": "eyJlMmJmYjczMC1lY2FhLTExZTYtOGY4OC0zNDM2M2JjN2M0YzAiOnsiY3JlYXRlIjo2MDAwMDAwMDAwMDAsImRlbGV0ZSI6MTIwMDAwMDAwMDAwMCwidXBkYXRlIjo2MDAwMDAwMDAwMDB9LCJzY2hlbWFfdmVyc2lvbiI6IjEifQ=="
-        }
-      ]
-    },
-    {
-      "mode": "managed",
-      "type": "aws_instance",
-      "name": "cedric-instance2",
-      "provider": "provider.aws",
-      "instances": [
-        {
-          "schema_version": 1,
-          "attributes": {
-            "ami": "ami-01a6e31ac994bbc09",
-            "arn": "arn:aws:ec2:eu-west-2:031660489033:instance/i-078e2a848ed2044d6",
-            "associate_public_ip_address": true,
-            "availability_zone": "eu-west-2a",
-            "cpu_core_count": 1,
-            "cpu_threads_per_core": 1,
-            "credit_specification": [
-              {
-                "cpu_credits": "standard"
-              }
-            ],
-            "disable_api_termination": false,
-            "ebs_block_device": [],
-            "ebs_optimized": false,
-            "ephemeral_block_device": [],
-            "get_password_data": false,
-            "hibernation": false,
-            "host_id": null,
-            "iam_instance_profile": "",
-            "id": "i-078e2a848ed2044d6",
-            "instance_initiated_shutdown_behavior": null,
-            "instance_state": "running",
-            "instance_type": "t2.micro",
-            "ipv6_address_count": 0,
-            "ipv6_addresses": [],
-            "key_name": "cedric",
-            "metadata_options": [
-              {
-                "http_endpoint": "enabled",
-                "http_put_response_hop_limit": 1,
-                "http_tokens": "optional"
-              }
-            ],
-            "monitoring": false,
-            "network_interface": [],
-            "network_interface_id": null,
-            "outpost_arn": "",
-            "password_data": "",
-            "placement_group": "",
-            "primary_network_interface_id": "eni-0bc1ed77db79d25df",
-            "private_dns": "ip-172-31-30-118.eu-west-2.compute.internal",
-            "private_ip": "172.31.30.118",
-            "public_dns": "ec2-3-8-134-92.eu-west-2.compute.amazonaws.com",
-            "public_ip": "3.8.134.92",
-            "root_block_device": [
-              {
-                "delete_on_termination": true,
-                "device_name": "/dev/xvda",
-                "encrypted": false,
-                "iops": 100,
-                "kms_key_id": "",
-                "volume_id": "vol-0e37009c992ca4481",
-                "volume_size": 8,
-                "volume_type": "gp2"
-              }
-            ],
-            "security_groups": [
-              "default"
-            ],
-            "source_dest_check": true,
-            "subnet_id": "subnet-d9ae3aa3",
-            "tags": {
-              "Name": "cedric-instance2"
-            },
-            "tenancy": "default",
-            "timeouts": null,
-            "user_data": null,
-            "user_data_base64": null,
-            "volume_tags": {},
-            "vpc_security_group_ids": [
-              "sg-64368d06"
-            ]
-          },
-          "private": "eyJlMmJmYjczMC1lY2FhLTExZTYtOGY4OC0zNDM2M2JjN2M0YzAiOnsiY3JlYXRlIjo2MDAwMDAwMDAwMDAsImRlbGV0ZSI6MTIwMDAwMDAwMDAwMCwidXBkYXRlIjo2MDAwMDAwMDAwMDB9LCJzY2hlbWFfdmVyc2lvbiI6IjEifQ=="
-        }
-      ]
-    }
-  ]
+  "resources": []
 }
diff --git a/project3/base.tf b/project3/base.tf
index 7753a9c..1e13917 100644
--- a/project3/base.tf
+++ b/project3/base.tf
@@ -3,6 +3,7 @@ terraform {
     bucket = "terraformsanofieu"
     region = "eu-west-2"
     key = "cedric/project3.tfstate"
+    dynamodb_table = "terraform-state-lock-cedric"
   }
 }
 
@@ -10,6 +11,18 @@ provider "aws" {
   region = "eu-west-2"
 }
 
+resource "aws_dynamodb_table" "terraform-state-lock" {
+  name = "terraform-state-lock-cedric"
+  hash_key = "LockID"
+  write_capacity = 20
+  read_capacity = 20
+
+  attribute {
+    name = "LockID"
+    type = "S"
+  }
+}
+
 resource "aws_instance" "cedric-instance3" {
   ami           = "ami-01a6e31ac994bbc09"
   instance_type = "t2.micro"