diff --git a/.github/workflows/motoko-composite-query-example.yaml b/.github/workflows/motoko-composite-query-example.yaml
index 681646bf4..9d5d40e43 100644
--- a/.github/workflows/motoko-composite-query-example.yaml
+++ b/.github/workflows/motoko-composite-query-example.yaml
@@ -19,8 +19,6 @@ jobs:
     steps:
       - uses: actions/checkout@v1
       - name: Provision Darwin
-        env:
-          DFX_VERSION: 0.15.0-beta.1
         run: bash .github/workflows/provision-darwin.sh
       - name: Motoko Composite Query Darwin
         run: |
@@ -33,8 +31,6 @@ jobs:
     steps:
       - uses: actions/checkout@v1
       - name: Provision Linux
-        env:
-          DFX_VERSION: 0.15.0-beta.1
         run: bash .github/workflows/provision-linux.sh
       - name: Motoko Composite Query Linux
         run: |
diff --git a/.github/workflows/motoko-defi-example.yml b/.github/workflows/motoko-defi-example.yml
index ab15c05e1..fb4488213 100644
--- a/.github/workflows/motoko-defi-example.yml
+++ b/.github/workflows/motoko-defi-example.yml
@@ -20,8 +20,6 @@ jobs:
         with:
           submodules: recursive
       - name: Provision Darwin
-        env:
-          DFX_VERSION: 0.15.3
         run: bash .github/workflows/provision-darwin.sh
       - name: Motoko Defi Darwin
         run: |
@@ -38,8 +36,6 @@ jobs:
         with:
           submodules: recursive
       - name: Provision Linux
-        env:
-          DFX_VERSION: 0.15.3
         run: bash .github/workflows/provision-linux.sh
       - name: Motoko Defi Linux
         run: |
diff --git a/.github/workflows/motoko-encrypted-notes-example.yml b/.github/workflows/motoko-encrypted-notes-example.yml
index b67312b11..7c7e8435f 100644
--- a/.github/workflows/motoko-encrypted-notes-example.yml
+++ b/.github/workflows/motoko-encrypted-notes-example.yml
@@ -18,8 +18,6 @@ jobs:
     steps:
       - uses: actions/checkout@v1
       - name: Provision Darwin
-        env:
-          DFX_VERSION: 0.14.2
         run: bash .github/workflows/provision-darwin.sh
       - name: Motoko Encrypted Notes Darwin (unit tests)
         run: |
@@ -36,8 +34,6 @@ jobs:
     steps:
       - uses: actions/checkout@v1
       - name: Provision Linux
-        env:
-          DFX_VERSION: 0.14.2
         run: bash .github/workflows/provision-linux.sh
       - name: Motoko Encrypted Notes Linux (unit tests)
         run: |
diff --git a/.github/workflows/motoko-icrc2-swap-example.yml b/.github/workflows/motoko-icrc2-swap-example.yml
index 75b8b0ba3..1714fcc3d 100644
--- a/.github/workflows/motoko-icrc2-swap-example.yml
+++ b/.github/workflows/motoko-icrc2-swap-example.yml
@@ -18,8 +18,6 @@ jobs:
     steps:
       - uses: actions/checkout@v1
       - name: Provision Linux
-        env:
-          DFX_VERSION: 0.15.1
         run: bash .github/workflows/provision-linux.sh
       - name: Motoko ICRC2-Swap Linux
         run: |
diff --git a/.github/workflows/motoko-internet-identity-integration-example.yaml b/.github/workflows/motoko-internet-identity-integration-example.yaml
index 343feca56..22bb64a5a 100644
--- a/.github/workflows/motoko-internet-identity-integration-example.yaml
+++ b/.github/workflows/motoko-internet-identity-integration-example.yaml
@@ -18,8 +18,6 @@ jobs:
     steps:
       - uses: actions/checkout@v1
       - name: Provision Darwin
-        env:
-          DFX_VERSION: 0.15.3
         run: bash .github/workflows/provision-darwin.sh
       - name: Motoko Internet Identity Integration Darwin
         run: |
@@ -32,8 +30,6 @@ jobs:
     steps:
       - uses: actions/checkout@v1
       - name: Provision Linux
-        env:
-          DFX_VERSION: 0.15.3
         run: bash .github/workflows/provision-linux.sh
       - name: Motoko Internet Identity Integration Linux
         run: |
diff --git a/.github/workflows/motoko-vetkd-example.yml b/.github/workflows/motoko-vetkd-example.yml
index ce2912a6f..c6ffae834 100644
--- a/.github/workflows/motoko-vetkd-example.yml
+++ b/.github/workflows/motoko-vetkd-example.yml
@@ -19,7 +19,6 @@ jobs:
       - uses: actions/checkout@v1
       - name: Provision Darwin
         env:
-          DFX_VERSION: 0.14.2
           NODE_VERSION: 19.8.1
         run: bash .github/workflows/provision-darwin.sh
       - name: Motoko vetKD Darwin
@@ -33,8 +32,6 @@ jobs:
     steps:
       - uses: actions/checkout@v1
       - name: Provision Linux
-        env:
-          DFX_VERSION: 0.14.2
         run: bash .github/workflows/provision-linux.sh
       - name: Motoko vetKD Linux
         run: |
diff --git a/.github/workflows/rust-counter-example.yml b/.github/workflows/rust-counter-example.yml
index 519172f94..8d7341a2c 100644
--- a/.github/workflows/rust-counter-example.yml
+++ b/.github/workflows/rust-counter-example.yml
@@ -18,7 +18,7 @@ jobs:
     steps:
       - uses: actions/checkout@v1
       - name: Provision Darwin
-        run: DFX_VERSION="0.15.2" bash .github/workflows/provision-darwin.sh
+        run: bash .github/workflows/provision-darwin.sh
       - name: Rust Counter Darwin
         run: |
           dfx start --background
@@ -30,7 +30,7 @@ jobs:
     steps:
       - uses: actions/checkout@v1
       - name: Provision Linux
-        run: DFX_VERSION="0.15.2" bash .github/workflows/provision-linux.sh
+        run: bash .github/workflows/provision-linux.sh
       - name: Rust Counter Linux
         run: |
           dfx start --background
diff --git a/.github/workflows/rust-defi-example.yml b/.github/workflows/rust-defi-example.yml
index 8cadf4ace..385c69520 100644
--- a/.github/workflows/rust-defi-example.yml
+++ b/.github/workflows/rust-defi-example.yml
@@ -20,8 +20,6 @@ jobs:
         with:
           submodules: recursive
       - name: Provision Darwin
-        env:
-          DFX_VERSION: 0.15.3
         run: bash .github/workflows/provision-darwin.sh
       - name: Rust Defi Darwin
         run: |
@@ -38,8 +36,6 @@ jobs:
         with:
           submodules: recursive
       - name: Provision Linux
-        env:
-          DFX_VERSION: 0.15.3
         run: bash .github/workflows/provision-linux.sh
       - name: Rust Defi Linux
         run: |
diff --git a/.github/workflows/rust-encrypted-notes-example.yml b/.github/workflows/rust-encrypted-notes-example.yml
index 194e20b95..22e7180cd 100644
--- a/.github/workflows/rust-encrypted-notes-example.yml
+++ b/.github/workflows/rust-encrypted-notes-example.yml
@@ -18,8 +18,6 @@ jobs:
     steps:
       - uses: actions/checkout@v1
       - name: Provision Darwin
-        env:
-          DFX_VERSION: 0.14.2
         run: bash .github/workflows/provision-darwin.sh
       - name: Rust Encrypted Notes Darwin (unit tests)
         run: |
@@ -36,8 +34,6 @@ jobs:
     steps:
       - uses: actions/checkout@v1
       - name: Provision Linux
-        env:
-          DFX_VERSION: 0.14.2
         run: bash .github/workflows/provision-linux.sh
       - name: Rust Encrypted Notes Linux (unit tests)
         run: |
diff --git a/.github/workflows/rust-hello-example.yml b/.github/workflows/rust-hello-example.yml
index e2e18ee9b..9c64dbdc0 100644
--- a/.github/workflows/rust-hello-example.yml
+++ b/.github/workflows/rust-hello-example.yml
@@ -18,7 +18,7 @@ jobs:
     steps:
       - uses: actions/checkout@v1
       - name: Provision Darwin
-        run: DFX_VERSION="0.15.2" bash .github/workflows/provision-darwin.sh
+        run: bash .github/workflows/provision-darwin.sh
       - name: Rust Hello Darwin
         run: |
           dfx start --background
@@ -30,7 +30,7 @@ jobs:
     steps:
       - uses: actions/checkout@v1
       - name: Provision Linux
-        run: DFX_VERSION="0.15.2" bash .github/workflows/provision-linux.sh
+        run: bash .github/workflows/provision-linux.sh
       - name: Rust Hello Linux
         run: |
           dfx start --background
diff --git a/.github/workflows/rust-performance_counters-example.yaml b/.github/workflows/rust-performance_counters-example.yaml
index 9890001d3..008022422 100644
--- a/.github/workflows/rust-performance_counters-example.yaml
+++ b/.github/workflows/rust-performance_counters-example.yaml
@@ -18,7 +18,7 @@ jobs:
     steps:
       - uses: actions/checkout@v1
       - name: Provision Darwin
-        run: DFX_VERSION="0.15.2" bash .github/workflows/provision-darwin.sh
+        run: bash .github/workflows/provision-darwin.sh
       - name: Rust Performance Counters Darwin
         run: |
           dfx start --background
@@ -30,7 +30,7 @@ jobs:
     steps:
       - uses: actions/checkout@v1
       - name: Provision Linux
-        run: DFX_VERSION="0.15.2" bash .github/workflows/provision-linux.sh
+        run: bash .github/workflows/provision-linux.sh
       - name: Rust Performance Counters Linux
         run: |
           dfx start --background
diff --git a/.github/workflows/rust-periodic_tasks-example.yaml b/.github/workflows/rust-periodic_tasks-example.yaml
index 29e6ee431..2e1a05c13 100644
--- a/.github/workflows/rust-periodic_tasks-example.yaml
+++ b/.github/workflows/rust-periodic_tasks-example.yaml
@@ -18,7 +18,7 @@ jobs:
     steps:
       - uses: actions/checkout@v1
       - name: Provision Darwin
-        run: DFX_VERSION="0.15.2" bash .github/workflows/provision-darwin.sh
+        run: bash .github/workflows/provision-darwin.sh
       - name: Rust Periodic Tasks Darwin
         run: |
           dfx start --background
@@ -30,7 +30,7 @@ jobs:
     steps:
       - uses: actions/checkout@v1
       - name: Provision Linux
-        run: DFX_VERSION="0.15.2" bash .github/workflows/provision-linux.sh
+        run: bash .github/workflows/provision-linux.sh
       - name: Rust Periodic Tasks Linux
         run: |
           dfx start --background
diff --git a/.github/workflows/rust-qrcode-example.yaml b/.github/workflows/rust-qrcode-example.yaml
index 36027a096..a3b1d91e2 100644
--- a/.github/workflows/rust-qrcode-example.yaml
+++ b/.github/workflows/rust-qrcode-example.yaml
@@ -18,7 +18,7 @@ jobs:
     steps:
       - uses: actions/checkout@v1
       - name: Provision Darwin
-        run: DFX_VERSION="0.15.2" bash .github/workflows/provision-darwin.sh
+        run: bash .github/workflows/provision-darwin.sh
       - name: Rust QRCode Darwin
         run: |
           dfx start --background
@@ -30,7 +30,7 @@ jobs:
     steps:
       - uses: actions/checkout@v1
       - name: Provision Linux
-        run: DFX_VERSION="0.15.2" bash .github/workflows/provision-linux.sh
+        run: bash .github/workflows/provision-linux.sh
       - name: Rust QRCode Linux
         run: |
           dfx start --background
diff --git a/.github/workflows/rust-vetkd-example.yml b/.github/workflows/rust-vetkd-example.yml
index d81be15c2..94e06370f 100644
--- a/.github/workflows/rust-vetkd-example.yml
+++ b/.github/workflows/rust-vetkd-example.yml
@@ -19,7 +19,6 @@ jobs:
       - uses: actions/checkout@v1
       - name: Provision Darwin
         env:
-          DFX_VERSION: 0.14.2
           NODE_VERSION: 19.8.1
         run: bash .github/workflows/provision-darwin.sh
       - name: Rust vetKD Darwin
@@ -33,8 +32,6 @@ jobs:
     steps:
       - uses: actions/checkout@v1
       - name: Provision Linux
-        env:
-          DFX_VERSION: 0.14.2
         run: bash .github/workflows/provision-linux.sh
       - name: Rust vetKD Linux
         run: |
diff --git a/motoko/encrypted-notes-dapp/package-lock.json b/motoko/encrypted-notes-dapp/package-lock.json
index 56134ec9b..a46cab380 100644
--- a/motoko/encrypted-notes-dapp/package-lock.json
+++ b/motoko/encrypted-notes-dapp/package-lock.json
@@ -35,7 +35,7 @@
         "babel-jest": "^27.4.6",
         "daisyui": "^1.25.4",
         "jest": "^27.4.7",
-        "postcss": "^8.4.5",
+        "postcss": "^8.4.31",
         "rollup": "^2.3.4",
         "rollup-plugin-css-only": "^3.1.0",
         "rollup-plugin-inject": "^3.0.2",
@@ -8958,10 +8958,16 @@
       "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
     },
     "node_modules/nanoid": {
-      "version": "3.2.0",
-      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.2.0.tgz",
-      "integrity": "sha512-fmsZYa9lpn69Ad5eDn7FMcnnSR+8R34W9qJEijxYhTbfOWzr22n1QxCMzXLK+ODyW2973V3Fux959iQoUxzUIA==",
+      "version": "3.3.7",
+      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.7.tgz",
+      "integrity": "sha512-eSRppjcPIatRIMC1U6UngP8XFcz8MQWGQdt1MTBQ7NaAmvXDfvNxbvWV3x2y6CdEUciCSsDHDQZbhYaB8QEo2g==",
       "dev": true,
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/ai"
+        }
+      ],
       "bin": {
         "nanoid": "bin/nanoid.cjs"
       },
@@ -9241,21 +9247,31 @@
       }
     },
     "node_modules/postcss": {
-      "version": "8.4.5",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.5.tgz",
-      "integrity": "sha512-jBDboWM8qpaqwkMwItqTQTiFikhs/67OYVvblFFTM7MrZjt6yMKd6r2kgXizEbTTljacm4NldIlZnhbjr84QYg==",
+      "version": "8.4.31",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.31.tgz",
+      "integrity": "sha512-PS08Iboia9mts/2ygV3eLpY5ghnUcfLV/EXTOW1E2qYxJKGGBUtNjN76FYHnMs36RmARn41bC0AZmn+rR0OVpQ==",
       "dev": true,
+      "funding": [
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/postcss/"
+        },
+        {
+          "type": "tidelift",
+          "url": "https://tidelift.com/funding/github/npm/postcss"
+        },
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/ai"
+        }
+      ],
       "dependencies": {
-        "nanoid": "^3.1.30",
+        "nanoid": "^3.3.6",
         "picocolors": "^1.0.0",
-        "source-map-js": "^1.0.1"
+        "source-map-js": "^1.0.2"
       },
       "engines": {
         "node": "^10 || ^12 || >=14"
-      },
-      "funding": {
-        "type": "opencollective",
-        "url": "https://opencollective.com/postcss/"
       }
     },
     "node_modules/postcss-js": {
@@ -17850,9 +17866,9 @@
       "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
     },
     "nanoid": {
-      "version": "3.2.0",
-      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.2.0.tgz",
-      "integrity": "sha512-fmsZYa9lpn69Ad5eDn7FMcnnSR+8R34W9qJEijxYhTbfOWzr22n1QxCMzXLK+ODyW2973V3Fux959iQoUxzUIA==",
+      "version": "3.3.7",
+      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.7.tgz",
+      "integrity": "sha512-eSRppjcPIatRIMC1U6UngP8XFcz8MQWGQdt1MTBQ7NaAmvXDfvNxbvWV3x2y6CdEUciCSsDHDQZbhYaB8QEo2g==",
       "dev": true
     },
     "natural-compare": {
@@ -18052,14 +18068,14 @@
       }
     },
     "postcss": {
-      "version": "8.4.5",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.5.tgz",
-      "integrity": "sha512-jBDboWM8qpaqwkMwItqTQTiFikhs/67OYVvblFFTM7MrZjt6yMKd6r2kgXizEbTTljacm4NldIlZnhbjr84QYg==",
+      "version": "8.4.31",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.31.tgz",
+      "integrity": "sha512-PS08Iboia9mts/2ygV3eLpY5ghnUcfLV/EXTOW1E2qYxJKGGBUtNjN76FYHnMs36RmARn41bC0AZmn+rR0OVpQ==",
       "dev": true,
       "requires": {
-        "nanoid": "^3.1.30",
+        "nanoid": "^3.3.6",
         "picocolors": "^1.0.0",
-        "source-map-js": "^1.0.1"
+        "source-map-js": "^1.0.2"
       }
     },
     "postcss-js": {
diff --git a/motoko/encrypted-notes-dapp/package.json b/motoko/encrypted-notes-dapp/package.json
index 1f5a057a9..6944aaed8 100644
--- a/motoko/encrypted-notes-dapp/package.json
+++ b/motoko/encrypted-notes-dapp/package.json
@@ -36,7 +36,7 @@
     "babel-jest": "^27.4.6",
     "daisyui": "^1.25.4",
     "jest": "^27.4.7",
-    "postcss": "^8.4.5",
+    "postcss": "^8.4.31",
     "rollup": "^2.3.4",
     "rollup-plugin-css-only": "^3.1.0",
     "rollup-plugin-inject": "^3.0.2",
diff --git a/rust/send_http_post/package-lock.json b/rust/send_http_post/package-lock.json
index 9d88e3c93..5f004a399 100644
--- a/rust/send_http_post/package-lock.json
+++ b/rust/send_http_post/package-lock.json
@@ -1817,9 +1817,9 @@
       }
     },
     "node_modules/follow-redirects": {
-      "version": "1.15.2",
-      "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.15.2.tgz",
-      "integrity": "sha512-VQLG33o04KaQ8uYi2tVNbdrWp1QWxNNea+nmIB4EVM28v0hmP17z7aG1+wAkNzVq4KeXTq3221ye5qTJP91JwA==",
+      "version": "1.15.5",
+      "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.15.5.tgz",
+      "integrity": "sha512-vSFWUON1B+yAw1VN4xMfxgn5fTUiaOzAJCKBwIIgT/+7CuGy9+r+5gITvP62j3RmaD5Ph65UaERdOSRGUzZtgw==",
       "dev": true,
       "funding": [
         {
@@ -6051,9 +6051,9 @@
       }
     },
     "follow-redirects": {
-      "version": "1.15.2",
-      "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.15.2.tgz",
-      "integrity": "sha512-VQLG33o04KaQ8uYi2tVNbdrWp1QWxNNea+nmIB4EVM28v0hmP17z7aG1+wAkNzVq4KeXTq3221ye5qTJP91JwA==",
+      "version": "1.15.5",
+      "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.15.5.tgz",
+      "integrity": "sha512-vSFWUON1B+yAw1VN4xMfxgn5fTUiaOzAJCKBwIIgT/+7CuGy9+r+5gITvP62j3RmaD5Ph65UaERdOSRGUzZtgw==",
       "dev": true
     },
     "for-each": {