diff --git a/.github/_typos.toml b/.github/_typos.toml
new file mode 100644
index 0000000000..6234b2c783
--- /dev/null
+++ b/.github/_typos.toml
@@ -0,0 +1,4 @@
+[default.extend-words]
+TGE = "TGE"
+TKO = "TKO"
+Ethereum = "Ethereum"
\ No newline at end of file
diff --git a/.github/actions/install-pnpm-dependencies/action.yml b/.github/actions/install-pnpm-dependencies/action.yml
index 5d98115c22..d3fec869f9 100644
--- a/.github/actions/install-pnpm-dependencies/action.yml
+++ b/.github/actions/install-pnpm-dependencies/action.yml
@@ -5,12 +5,12 @@ runs:
   using: "composite"
   steps:
     - name: Setup Node.js
-      uses: actions/setup-node@v3
+      uses: actions/setup-node@v4
       with:
-        node-version: 18
+        node-version: 20
 
     - name: Install pnpm
-      uses: pnpm/action-setup@v2
+      uses: pnpm/action-setup@v3
       id: pnpm-install
       with:
         version: 8
@@ -23,7 +23,7 @@ runs:
         echo "STORE_PATH=$(pnpm store path)" >> $GITHUB_OUTPUT
 
     - name: Setup pnpm cache
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: ${{ steps.pnpm-cache.outputs.STORE_PATH }}
         key: ${{ runner.os }}-pnpm-store-${{ hashFiles('**/pnpm-lock.yaml') }}
diff --git a/.github/workflows/typos.yml b/.github/workflows/typos.yml
index 2155dc1341..ea5584f3c4 100644
--- a/.github/workflows/typos.yml
+++ b/.github/workflows/typos.yml
@@ -11,3 +11,5 @@ jobs:
 
       - name: Check for typos
         uses: crate-ci/typos@master
+        with:
+          config: ${{github.workspace}}/.github/_typos.toml
diff --git a/.github/workflows/validate-pr-title.yml b/.github/workflows/validate-pr-title.yml
index fea00761e3..70240c32d3 100644
--- a/.github/workflows/validate-pr-title.yml
+++ b/.github/workflows/validate-pr-title.yml
@@ -42,8 +42,8 @@ jobs:
             taikoon
             supplementary-contracts
           requireScope: true
-          subjectPattern: ^(?![A-Z]).+$ # Require lowercase PR title
+          subjectPattern: ^(?![A-Z])(?!.*\btypo\b).+$ # Require lowercase PR title and prohibit word "typo"
           subjectPatternError: |
             The subject "{subject}" found in the pull request title "{title}"
             didn't match the configured pattern. Please ensure that the subject
-            doesn't start with an uppercase character.
+            doesn't start with an uppercase character and doesn't contains word "typo".
diff --git a/README.md b/README.md
index 18e4e52d63..40ed82d51f 100644
--- a/README.md
+++ b/README.md
@@ -44,7 +44,9 @@ taiko-mono/
 │   ├── <a href="./packages/guardian-prover-health-check">guardian-prover-health-check</a>: Guardian prover health check service.
 │   ├── <a href="./packages/guardian-prover-health-check-ui">guardian-prover-health-check-ui</a>: Guardian prover health check UI.
 │   ├── <a href="./packages/protocol">protocol</a>: Taiko protocol smart contracts.
-│   └── <a href="./packages/relayer">relayer</a>: Bridge backend relayer.
+│   ├── <a href="./packages/relayer">relayer</a>: Bridge backend relayer.
+│   ├── <a href="./packages/taikoon">taikoon</a>: Taikoon NFT contracts.
+│   └── <a href="./packages/supplementary-contracts">supplementary-contracts</a>: Supplementary smart contracts that are not part of the Taiko rollup protocol.
 ...
 </pre>