diff --git a/dev-setup.sh b/dev-setup.sh
index d5b06ab8..1f4fd53e 100755
--- a/dev-setup.sh
+++ b/dev-setup.sh
@@ -93,7 +93,7 @@ sudo apt-get install -y \
 sudo apt-get install -y jq
 
 # NodeJs
-curl -fsSL https://deb.nodesource.com/setup_14.x | sudo -E bash -
+curl -fsSL https://deb.nodesource.com/setup_16.x | sudo -E bash -
 sudo apt-get install -y nodejs
 # ncc build utility for nodejs compiled builds.
 sudo npm i -g @vercel/ncc
diff --git a/examples/js_client/package-lock.json b/examples/js_client/package-lock.json
index a96de439..c765eaf6 100644
--- a/examples/js_client/package-lock.json
+++ b/examples/js_client/package-lock.json
@@ -1,6 +1,137 @@
 {
+    "name": "js_client",
+    "lockfileVersion": 2,
     "requires": true,
-    "lockfileVersion": 1,
+    "packages": {
+        "": {
+            "dependencies": {
+                "bson": "4.5.3",
+                "hotpocket-js-client": "0.5.3"
+            }
+        },
+        "node_modules/base64-js": {
+            "version": "1.5.1",
+            "resolved": "https://registry.npmjs.org/base64-js/-/base64-js-1.5.1.tgz",
+            "integrity": "sha512-AKpaYlHn8t4SVbOHCy+b5+KKgvR4vrsD8vbvrbiQJps7fKDTkjkDry6ji0rUJjC0kzbNePLwzxq8iypo41qeWA==",
+            "funding": [
+                {
+                    "type": "github",
+                    "url": "https://github.com/sponsors/feross"
+                },
+                {
+                    "type": "patreon",
+                    "url": "https://www.patreon.com/feross"
+                },
+                {
+                    "type": "consulting",
+                    "url": "https://feross.org/support"
+                }
+            ]
+        },
+        "node_modules/blake3": {
+            "version": "2.1.4",
+            "resolved": "https://registry.npmjs.org/blake3/-/blake3-2.1.4.tgz",
+            "integrity": "sha512-70hmx0lPd6zmtNwxPT4/1P0pqaEUlTJ0noUBvCXPLfMpN0o8PPaK3q7ZlpRIyhrqcXxeMAJSowNm/L9oi/x1XA==",
+            "hasInstallScript": true
+        },
+        "node_modules/bson": {
+            "version": "4.5.3",
+            "resolved": "https://registry.npmjs.org/bson/-/bson-4.5.3.tgz",
+            "integrity": "sha512-qVX7LX79Mtj7B3NPLzCfBiCP6RAsjiV8N63DjlaVVpZW+PFoDTxQ4SeDbSpcqgE6mXksM5CAwZnXxxxn/XwC0g==",
+            "dependencies": {
+                "buffer": "^5.6.0"
+            },
+            "engines": {
+                "node": ">=6.9.0"
+            }
+        },
+        "node_modules/buffer": {
+            "version": "5.7.1",
+            "resolved": "https://registry.npmjs.org/buffer/-/buffer-5.7.1.tgz",
+            "integrity": "sha512-EHcyIPBQ4BSGlvjB16k5KgAJ27CIsHY/2JBmCRReo48y9rQ3MaUzWX3KVlBa4U7MyX02HdVj0K7C3WaB3ju7FQ==",
+            "funding": [
+                {
+                    "type": "github",
+                    "url": "https://github.com/sponsors/feross"
+                },
+                {
+                    "type": "patreon",
+                    "url": "https://www.patreon.com/feross"
+                },
+                {
+                    "type": "consulting",
+                    "url": "https://feross.org/support"
+                }
+            ],
+            "dependencies": {
+                "base64-js": "^1.3.1",
+                "ieee754": "^1.1.13"
+            }
+        },
+        "node_modules/hotpocket-js-client": {
+            "version": "0.5.3",
+            "resolved": "https://registry.npmjs.org/hotpocket-js-client/-/hotpocket-js-client-0.5.3.tgz",
+            "integrity": "sha512-q+qglTOTtI8t8BRqeKnb2cFyaGsb0RrTx4tQnF9HPYZYsNYkQfQcBpt+p8QzhEP2UqIbIlx8nz7HQ+CsdYr1xw==",
+            "dependencies": {
+                "blake3": "2.1.4",
+                "bson": "4.5.3",
+                "libsodium-wrappers": "0.7.9",
+                "ws": "8.2.3"
+            }
+        },
+        "node_modules/ieee754": {
+            "version": "1.2.1",
+            "resolved": "https://registry.npmjs.org/ieee754/-/ieee754-1.2.1.tgz",
+            "integrity": "sha512-dcyqhDvX1C46lXZcVqCpK+FtMRQVdIMN6/Df5js2zouUsqG7I6sFxitIC+7KYK29KdXOLHdu9zL4sFnoVQnqaA==",
+            "funding": [
+                {
+                    "type": "github",
+                    "url": "https://github.com/sponsors/feross"
+                },
+                {
+                    "type": "patreon",
+                    "url": "https://www.patreon.com/feross"
+                },
+                {
+                    "type": "consulting",
+                    "url": "https://feross.org/support"
+                }
+            ]
+        },
+        "node_modules/libsodium": {
+            "version": "0.7.9",
+            "resolved": "https://registry.npmjs.org/libsodium/-/libsodium-0.7.9.tgz",
+            "integrity": "sha512-gfeADtR4D/CM0oRUviKBViMGXZDgnFdMKMzHsvBdqLBHd9ySi6EtYnmuhHVDDYgYpAO8eU8hEY+F8vIUAPh08A=="
+        },
+        "node_modules/libsodium-wrappers": {
+            "version": "0.7.9",
+            "resolved": "https://registry.npmjs.org/libsodium-wrappers/-/libsodium-wrappers-0.7.9.tgz",
+            "integrity": "sha512-9HaAeBGk1nKTRFRHkt7nzxqCvnkWTjn1pdjKgcUnZxj0FyOP4CnhgFhMdrFfgNsukijBGyBLpP2m2uKT1vuWhQ==",
+            "dependencies": {
+                "libsodium": "^0.7.0"
+            }
+        },
+        "node_modules/ws": {
+            "version": "8.2.3",
+            "resolved": "https://registry.npmjs.org/ws/-/ws-8.2.3.tgz",
+            "integrity": "sha512-wBuoj1BDpC6ZQ1B7DWQBYVLphPWkm8i9Y0/3YdHjHKHiohOJ1ws+3OccDWtH+PoC9DZD5WOTrJvNbWvjS6JWaA==",
+            "engines": {
+                "node": ">=10.0.0"
+            },
+            "peerDependencies": {
+                "bufferutil": "^4.0.1",
+                "utf-8-validate": "^5.0.2"
+            },
+            "peerDependenciesMeta": {
+                "bufferutil": {
+                    "optional": true
+                },
+                "utf-8-validate": {
+                    "optional": true
+                }
+            }
+        }
+    },
     "dependencies": {
         "base64-js": {
             "version": "1.5.1",
@@ -30,9 +161,9 @@
             }
         },
         "hotpocket-js-client": {
-            "version": "0.5.2",
-            "resolved": "https://registry.npmjs.org/hotpocket-js-client/-/hotpocket-js-client-0.5.2.tgz",
-            "integrity": "sha512-WjixO8nmpAvrPdPVPT5LbMVNw4MBSD8iLjVWW4YvKVPy9hxZqFzORFZz6qD+Asx+6KQMncMsCxkXJGJ2QxKCOA==",
+            "version": "0.5.3",
+            "resolved": "https://registry.npmjs.org/hotpocket-js-client/-/hotpocket-js-client-0.5.3.tgz",
+            "integrity": "sha512-q+qglTOTtI8t8BRqeKnb2cFyaGsb0RrTx4tQnF9HPYZYsNYkQfQcBpt+p8QzhEP2UqIbIlx8nz7HQ+CsdYr1xw==",
             "requires": {
                 "blake3": "2.1.4",
                 "bson": "4.5.3",
@@ -61,7 +192,8 @@
         "ws": {
             "version": "8.2.3",
             "resolved": "https://registry.npmjs.org/ws/-/ws-8.2.3.tgz",
-            "integrity": "sha512-wBuoj1BDpC6ZQ1B7DWQBYVLphPWkm8i9Y0/3YdHjHKHiohOJ1ws+3OccDWtH+PoC9DZD5WOTrJvNbWvjS6JWaA=="
+            "integrity": "sha512-wBuoj1BDpC6ZQ1B7DWQBYVLphPWkm8i9Y0/3YdHjHKHiohOJ1ws+3OccDWtH+PoC9DZD5WOTrJvNbWvjS6JWaA==",
+            "requires": {}
         }
     }
 }
diff --git a/examples/js_client/package.json b/examples/js_client/package.json
index 94a6045d..9bfd16b5 100644
--- a/examples/js_client/package.json
+++ b/examples/js_client/package.json
@@ -1,6 +1,6 @@
 {
     "dependencies": {
-        "hotpocket-js-client": "0.5.2",
+        "hotpocket-js-client": "0.5.3",
         "bson": "4.5.3"
     }
 }
diff --git a/examples/nodejs_contract/package-lock.json b/examples/nodejs_contract/package-lock.json
index b7585579..006dfc1d 100644
--- a/examples/nodejs_contract/package-lock.json
+++ b/examples/nodejs_contract/package-lock.json
@@ -1,6 +1,62 @@
 {
+    "name": "nodejs_contract",
+    "lockfileVersion": 2,
     "requires": true,
-    "lockfileVersion": 1,
+    "packages": {
+        "": {
+            "dependencies": {
+                "bson": "4.0.4",
+                "hotpocket-nodejs-contract": "0.5.3",
+                "seedrandom": "3.0.5"
+            }
+        },
+        "node_modules/base64-js": {
+            "version": "1.3.1",
+            "resolved": "https://registry.npmjs.org/base64-js/-/base64-js-1.3.1.tgz",
+            "integrity": "sha512-mLQ4i2QO1ytvGWFWmcngKO//JXAQueZvwEKtjgQFM4jIK0kU+ytMfplL8j+n5mspOfjHwoAg+9yhb7BwAHm36g=="
+        },
+        "node_modules/bson": {
+            "version": "4.0.4",
+            "resolved": "https://registry.npmjs.org/bson/-/bson-4.0.4.tgz",
+            "integrity": "sha512-Ioi3TD0/1V3aI8+hPfC56TetYmzfq2H07jJa9A1lKTxWsFtHtYdLMGMXjtGEg9v0f72NSM07diRQEUNYhLupIA==",
+            "dependencies": {
+                "buffer": "^5.1.0",
+                "long": "^4.0.0"
+            },
+            "engines": {
+                "node": ">=6.9.0"
+            }
+        },
+        "node_modules/buffer": {
+            "version": "5.6.0",
+            "resolved": "https://registry.npmjs.org/buffer/-/buffer-5.6.0.tgz",
+            "integrity": "sha512-/gDYp/UtU0eA1ys8bOs9J6a+E/KWIY+DZ+Q2WESNUA0jFRsJOc0SNUO6xJ5SGA1xueg3NL65W6s+NY5l9cunuw==",
+            "dependencies": {
+                "base64-js": "^1.0.2",
+                "ieee754": "^1.1.4"
+            }
+        },
+        "node_modules/hotpocket-nodejs-contract": {
+            "version": "0.5.3",
+            "resolved": "https://registry.npmjs.org/hotpocket-nodejs-contract/-/hotpocket-nodejs-contract-0.5.3.tgz",
+            "integrity": "sha512-IMyH6noQB1w6dcPTLxdrArMpfeT9d9VJPEQ5bxubDi9Gqeu+s+0E2tKP7wDY85ie7cG/IzC9v0TCbTggp2u12w=="
+        },
+        "node_modules/ieee754": {
+            "version": "1.1.13",
+            "resolved": "https://registry.npmjs.org/ieee754/-/ieee754-1.1.13.tgz",
+            "integrity": "sha512-4vf7I2LYV/HaWerSo3XmlMkp5eZ83i+/CDluXi/IGTs/O1sejBNhTtnxzmRZfvOUqj7lZjqHkeTvpgSFDlWZTg=="
+        },
+        "node_modules/long": {
+            "version": "4.0.0",
+            "resolved": "https://registry.npmjs.org/long/-/long-4.0.0.tgz",
+            "integrity": "sha512-XsP+KhQif4bjX1kbuSiySJFNAehNxgLb6hPRGJ9QsUr8ajHkuXGdrHmFUTUUXhDwVX2R5bY4JNZEwbUiMhV+MA=="
+        },
+        "node_modules/seedrandom": {
+            "version": "3.0.5",
+            "resolved": "https://registry.npmjs.org/seedrandom/-/seedrandom-3.0.5.tgz",
+            "integrity": "sha512-8OwmbklUNzwezjGInmZ+2clQmExQPvomqjL7LFqOYqtmuxRgQYqOD3mHaU+MvZn5FLUeVxVfQjwLZW/n/JFuqg=="
+        }
+    },
     "dependencies": {
         "base64-js": {
             "version": "1.3.1",
@@ -26,9 +82,9 @@
             }
         },
         "hotpocket-nodejs-contract": {
-            "version": "0.5.2",
-            "resolved": "https://registry.npmjs.org/hotpocket-nodejs-contract/-/hotpocket-nodejs-contract-0.5.2.tgz",
-            "integrity": "sha512-kBDpdWqA5x3i72wkhUVnhpp5Z5Qojw9MQD6NUbpjpzo4YYf14KNT5MZjX+ugRggE26UlueCaYdhKcBu+vaYNaQ=="
+            "version": "0.5.3",
+            "resolved": "https://registry.npmjs.org/hotpocket-nodejs-contract/-/hotpocket-nodejs-contract-0.5.3.tgz",
+            "integrity": "sha512-IMyH6noQB1w6dcPTLxdrArMpfeT9d9VJPEQ5bxubDi9Gqeu+s+0E2tKP7wDY85ie7cG/IzC9v0TCbTggp2u12w=="
         },
         "ieee754": {
             "version": "1.1.13",
diff --git a/examples/nodejs_contract/package.json b/examples/nodejs_contract/package.json
index 7c52fbb1..ec3f56fe 100644
--- a/examples/nodejs_contract/package.json
+++ b/examples/nodejs_contract/package.json
@@ -5,7 +5,7 @@
         "build-diag": "ncc build diagnostic_contract.js -o dist/diagnostic-contract"
     },
     "dependencies": {
-        "hotpocket-nodejs-contract": "0.5.2",
+        "hotpocket-nodejs-contract": "0.5.3",
         "bson": "4.0.4",
         "seedrandom": "3.0.5"
     }
diff --git a/test/docker/build.sh b/test/docker/build.sh
index f542ca39..0738d634 100755
--- a/test/docker/build.sh
+++ b/test/docker/build.sh
@@ -22,11 +22,11 @@ rm -r $tmp/*
 
 # NodeJs image
 # Download and place the nodejs binary in the build context.
-curl -fsSL -o $tmp/nodejs.tar.xz https://nodejs.org/dist/v14.17.3/node-v14.17.3-linux-x64.tar.xz
-tar -xvJf $tmp/nodejs.tar.xz --strip-components=2 -C $tmp/ node-v14.17.3-linux-x64/bin/node
+curl -fsSL -o $tmp/nodejs.tar.xz https://nodejs.org/dist/v16.14.0/node-v16.14.0-linux-x64.tar.xz
+tar -xvJf $tmp/nodejs.tar.xz --strip-components=2 -C $tmp/ node-v16.14.0-linux-x64/bin/node
 rm $tmp/nodejs.tar.xz
 cp ./$njsfile $tmp/
 sed -i "s/%ver%/$imgversion/g" $tmp/$njsfile
-docker build -t $img:$imgversion-ubt.20.04-njs.14 -f $tmp/$njsfile $tmp
+docker build -t $img:$imgversion-ubt.20.04-njs.16 -f $tmp/$njsfile $tmp
 
 rm -r $tmp
\ No newline at end of file
diff --git a/test/local-cluster/Dockerfile b/test/local-cluster/Dockerfile
index 8eb77990..3a803cce 100644
--- a/test/local-cluster/Dockerfile
+++ b/test/local-cluster/Dockerfile
@@ -1,6 +1,7 @@
 # We are going with Hot Pocket NodeJs docker image because sample contracts need NodeJs to run.
-FROM evernodedev/hotpocket:0.5-ubt.20.04-njs.14
+FROM evernodedev/hotpocket:latest-ubt.20.04-njs.16
 
+# Copy (overwrite) the local build outputs into the docker image.
 COPY hpcore hpfs hpws /usr/local/bin/hotpocket/
 
 ENTRYPOINT ["/usr/local/bin/hotpocket/hpcore"]
diff --git a/test/vm-cluster/setup-hp.sh b/test/vm-cluster/setup-hp.sh
index cdcd23a8..ce995aac 100755
--- a/test/vm-cluster/setup-hp.sh
+++ b/test/vm-cluster/setup-hp.sh
@@ -21,7 +21,7 @@ else
    echo "Installing NodeJs..."
    sudo apt-get update
    sudo apt-get -y install curl
-   curl -sL https://deb.nodesource.com/setup_14.x | sudo -E bash -
+   curl -sL https://deb.nodesource.com/setup_16.x | sudo -E bash -
    sudo apt-get install -y nodejs
 fi