diff --git a/.github/actions/cached-image-pull/action.yml b/.github/actions/cached-image-pull/action.yml
index 351bb3e6a..efcb0201e 100644
--- a/.github/actions/cached-image-pull/action.yml
+++ b/.github/actions/cached-image-pull/action.yml
@@ -27,7 +27,7 @@ runs:
 
     - name: check image cache
       id: image-cache
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: ${{ steps.image-file.outputs.path }}
         key: image-cache-${{ inputs.image }}
diff --git a/.github/workflows/devpackpublish.yml b/.github/workflows/devpackpublish.yml
index 0ae25a497..4ba79507e 100644
--- a/.github/workflows/devpackpublish.yml
+++ b/.github/workflows/devpackpublish.yml
@@ -6,12 +6,12 @@ jobs:
     runs-on: ubuntu-latest
     if: "! startsWith(github.event.head_commit.message, '[CI Skip]') && github.repository == 'kiltprotocol/sdk-js'"
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           # fetch-depth 0 and token needed to push changes on the package.json files back.
           fetch-depth: 0
           token: ${{ secrets.REPO_ACCESS_TOKEN }}
-      - uses: actions/setup-node@v3
+      - uses: actions/setup-node@v4
         with:
           node-version-file: '.nvmrc'
           cache: 'yarn'
diff --git a/.github/workflows/docpublish.yml b/.github/workflows/docpublish.yml
index 6d075f62a..c9c5a8e54 100644
--- a/.github/workflows/docpublish.yml
+++ b/.github/workflows/docpublish.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Install and Build
         run: |
diff --git a/.github/workflows/npmpublish-rc.yml b/.github/workflows/npmpublish-rc.yml
index 97b7586b2..f7cd5b20e 100644
--- a/.github/workflows/npmpublish-rc.yml
+++ b/.github/workflows/npmpublish-rc.yml
@@ -18,8 +18,8 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
           node-version-file: '.nvmrc'
           cache: 'yarn'
@@ -31,8 +31,8 @@ jobs:
     needs: build
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
           node-version-file: '.nvmrc'
           cache: 'yarn'
@@ -44,9 +44,9 @@ jobs:
         run: yarn run bundle
       - name: Get current package version
         id: package_version
-        run: echo "package_version=$(node -pe "require('./package.json').version")" >> $GITHUB_OUTPUT    
+        run: echo "package_version=$(node -pe "require('./package.json').version")" >> $GITHUB_OUTPUT
       - name: Publish to NPM
-        run: yarn run publish --tag ${{ inputs.npm_tag }} 
+        run: yarn run publish --tag ${{ inputs.npm_tag }}
         env:
           YARN_NPM_AUTH_TOKEN: ${{secrets.npm_token}}
       - name: Repository Dispatch
@@ -55,4 +55,4 @@ jobs:
           token: ${{ secrets.REPO_ACCESS_TOKEN }}
           repository: KILTProtocol/docs
           event-type: sdk-update
-          client-payload: '{"latestTag": "${{ steps.package_version.outputs.package_version }}"}'             
+          client-payload: '{"latestTag": "${{ steps.package_version.outputs.package_version }}"}'
diff --git a/.github/workflows/npmpublish.yml b/.github/workflows/npmpublish.yml
index 69f679d51..93ffad411 100644
--- a/.github/workflows/npmpublish.yml
+++ b/.github/workflows/npmpublish.yml
@@ -6,8 +6,8 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
           node-version-file: '.nvmrc'
           cache: 'yarn'
@@ -19,8 +19,8 @@ jobs:
     needs: build
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
           node-version-file: '.nvmrc'
           cache: 'yarn'
@@ -32,7 +32,7 @@ jobs:
         run: yarn run bundle
       - name: Get current package version
         id: package_version
-        run: echo "package_version=$(node -pe "require('./package.json').version")" >> $GITHUB_OUTPUT                  
+        run: echo "package_version=$(node -pe "require('./package.json').version")" >> $GITHUB_OUTPUT
       - name: Publish to NPM
         run: yarn run publish --tag latest
         env:
@@ -43,4 +43,4 @@ jobs:
           token: ${{ secrets.REPO_ACCESS_TOKEN }}
           repository: KILTProtocol/docs
           event-type: sdk-update
-          client-payload: '{"latestTag": "${{ steps.package_version.outputs.package_version }}"}'          
+          client-payload: '{"latestTag": "${{ steps.package_version.outputs.package_version }}"}'
diff --git a/.github/workflows/test-node-candidate.yml b/.github/workflows/test-node-candidate.yml
index 47e249598..40b805568 100644
--- a/.github/workflows/test-node-candidate.yml
+++ b/.github/workflows/test-node-candidate.yml
@@ -12,14 +12,13 @@ env:
   TESTCONTAINERS_WATCHER_IMG: testcontainers/ryuk:0.3.2
 
 jobs:
-
   build:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Setup Node.js
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
           node-version-file: '.nvmrc'
           cache: 'yarn'
@@ -30,7 +29,7 @@ jobs:
       - name: zip build
         run: zip -r build.zip .
       - name: upload build
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: build
           path: build.zip
@@ -39,7 +38,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: build
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: make sure testcontainers image is in cache
         uses: ./.github/actions/cached-image-pull
         with:
@@ -51,20 +50,20 @@ jobs:
     needs: cache_imgs
 
     steps:
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: build
       - name: unzip
         run: unzip build.zip -d .
       - name: Setup Node.js
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
           node-version-file: '.nvmrc'
       - name: Log out node version
         run: node --version
 
       - name: Configure AWS credentials
-        uses: aws-actions/configure-aws-credentials@v2
+        uses: aws-actions/configure-aws-credentials@v4
         with:
           aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
           aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
@@ -72,7 +71,7 @@ jobs:
 
       - name: Login to Amazon ECR
         id: login-ecr
-        uses: aws-actions/amazon-ecr-login@v1
+        uses: aws-actions/amazon-ecr-login@v2
 
       - name: pull image
         env:
@@ -97,19 +96,19 @@ jobs:
     needs: build
 
     steps:
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: build
       - name: unzip
         run: unzip build.zip -d .
       - name: Setup Node.js
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
           node-version-file: '.nvmrc'
       - name: yarn bundle
         run: yarn bundle
       - name: upload bundle artifact
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: checked-nonmin-bundle
           path: packages/sdk-js/dist/sdk-js.umd.js
@@ -120,21 +119,21 @@ jobs:
     needs: [cache_imgs, bundle_cache]
 
     steps:
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: build
       - name: unzip
         run: unzip build.zip -d .
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: checked-nonmin-bundle
           path: packages/sdk-js/dist
-      - uses: actions/setup-node@v3
+      - uses: actions/setup-node@v4
         with:
           node-version-file: '.nvmrc'
       - run: basename /packages/sdk-js/dist/
       - name: Configure AWS credentials
-        uses: aws-actions/configure-aws-credentials@v2
+        uses: aws-actions/configure-aws-credentials@v4
         with:
           aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
           aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
@@ -142,7 +141,7 @@ jobs:
 
       - name: Login to Amazon ECR
         id: login-ecr
-        uses: aws-actions/amazon-ecr-login@v1
+        uses: aws-actions/amazon-ecr-login@v2
       - name: pull node image
         env:
           ECR_REGISTRY: ${{ steps.login-ecr.outputs.registry }}
diff --git a/.github/workflows/tests-polkadot-deps.yml b/.github/workflows/tests-polkadot-deps.yml
index b14047507..0d5ebedb4 100644
--- a/.github/workflows/tests-polkadot-deps.yml
+++ b/.github/workflows/tests-polkadot-deps.yml
@@ -13,14 +13,14 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [18.x, 20.x]
+        node-version: [18.x, 20.x, 22.x]
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           ref: master
       - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
           cache: 'yarn'
@@ -35,7 +35,7 @@ jobs:
       - name: list dependencies
         run: echo "$(yarn info -A --name-only --json)" > locked_dependencies.txt
       - name: upload dependencies list
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: deps-${{ matrix.node-version }}
           path: |
@@ -47,7 +47,7 @@ jobs:
       - name: zip build
         run: zip -r build.zip .
       - name: upload build
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: build-${{ matrix.node-version }}
           path: build.zip
@@ -63,11 +63,13 @@ jobs:
         include:
           - node-version: 16.x
             required: 'optional'
+          - node-version: 22.x
+            required: 'optional'
 
     continue-on-error: ${{ matrix.required == 'optional' }}
 
     steps:
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: build-${{ matrix.node-version }}
       - name: unzip
@@ -91,7 +93,7 @@ jobs:
     continue-on-error: ${{ matrix.required == 'optional' }}
 
     steps:
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: build-20.x
       - name: unzip
@@ -106,9 +108,9 @@ jobs:
 
       - name: Login to Amazon ECR
         id: login-ecr
-        uses: aws-actions/amazon-ecr-login@v1
+        uses: aws-actions/amazon-ecr-login@v2
 
-      - name: pull image
+      - name: pull node image
         env:
           ECR_REGISTRY: ${{ steps.login-ecr.outputs.registry }}
           ECR_REPOSITORY: kilt/prototype-chain
@@ -135,7 +137,7 @@ jobs:
     needs: [test, integration_test]
     if: failure()
     steps:
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: deps-20.x
       - name: set dependencies env
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 54958f5a1..6af8a2690 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -37,9 +37,9 @@ jobs:
     needs: check_skip
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Setup Node.js
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
           node-version-file: '.nvmrc'
           cache: 'yarn'
@@ -50,7 +50,7 @@ jobs:
       - name: zip build
         run: zip -r build.zip .
       - name: upload build
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: build
           path: build.zip
@@ -60,13 +60,13 @@ jobs:
     needs: build
 
     steps:
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: build
       - name: unzip
         run: unzip build.zip -d .
       - name: Setup Node.js
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
           node-version-file: '.nvmrc'
       - name: lint
@@ -85,15 +85,17 @@ jobs:
         include:
           - node-version: 16
             required: 'optional'
+          - node-version: 22
+            required: 'optional'
 
     continue-on-error: ${{ matrix.required == 'optional' }}
 
     steps:
       - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: build
       - name: unzip
@@ -107,7 +109,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: build
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: make sure testcontainers image is in cache
         uses: ./.github/actions/cached-image-pull
         with:
@@ -129,20 +131,20 @@ jobs:
     continue-on-error: ${{ matrix.required == 'optional' }}
 
     steps:
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: build
       - name: unzip
         run: unzip build.zip -d .
       - name: Setup Node.js
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
           node-version-file: '.nvmrc'
       - name: Log out node version
         run: node --version
 
       - name: Configure AWS credentials
-        uses: aws-actions/configure-aws-credentials@v2
+        uses: aws-actions/configure-aws-credentials@v4
         with:
           aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
           aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
@@ -150,7 +152,7 @@ jobs:
 
       - name: Login to Amazon ECR
         id: login-ecr
-        uses: aws-actions/amazon-ecr-login@v1
+        uses: aws-actions/amazon-ecr-login@v2
 
       - name: pull image
         env:
@@ -169,30 +171,29 @@ jobs:
       - name: run integration tests (cjs)
         timeout-minutes: 60
         run: yarn test:integration -b
-      
+
       - name: run integration tests (esm)
         timeout-minutes: 60
         run: yarn test:integration:esm -b
 
-
   bundle_cache:
     runs-on: ubuntu-latest
     needs: build
 
     steps:
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: build
       - name: unzip
         run: unzip build.zip -d .
       - name: Setup Node.js
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
           node-version-file: '.nvmrc'
       - name: yarn bundle
         run: yarn bundle
       - name: upload bundle artifact
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: checked-nonmin-bundle
           path: packages/sdk-js/dist/sdk-js.umd.js
@@ -211,22 +212,22 @@ jobs:
 
     continue-on-error: ${{ matrix.required == 'optional' }}
     steps:
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: build
       - name: unzip
         run: unzip build.zip -d .
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: checked-nonmin-bundle
           path: packages/sdk-js/dist
 
-      - uses: actions/setup-node@v3
+      - uses: actions/setup-node@v4
         with:
           node-version-file: '.nvmrc'
 
       - name: Configure AWS credentials
-        uses: aws-actions/configure-aws-credentials@v2
+        uses: aws-actions/configure-aws-credentials@v4
         with:
           aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
           aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
@@ -234,7 +235,7 @@ jobs:
 
       - name: Login to Amazon ECR
         id: login-ecr
-        uses: aws-actions/amazon-ecr-login@v1
+        uses: aws-actions/amazon-ecr-login@v2
       - run: basename /packages/sdk-js/dist/
       - name: pull node image
         env: