diff --git a/.github/actions/ci/action.yml b/.github/actions/ci/action.yml
index 906400c..d7af3af 100644
--- a/.github/actions/ci/action.yml
+++ b/.github/actions/ci/action.yml
@@ -17,7 +17,7 @@ runs:
   steps:
     - run: make compile
       shell: bash
-    - uses: supercharge/redis-github-action@1.6.0
+    - uses: supercharge/redis-github-action@ea9b21c6ecece47bd99595c532e481390ea0f044
     - run: make ci-tests
       shell: bash
     - uses: ./.github/actions/build-docs
@@ -25,9 +25,10 @@ runs:
       shell: bash
     - run: make build-contract-tests
       shell: bash
-    - run: make start-contract-test-service-bg
+    - name: Start contract test service
       shell: bash
-    - uses: launchdarkly/gh-actions/actions/contract-tests@contract-tests-v1.0.2
+      run: make start-contract-test-service-bg
+    - uses: launchdarkly/gh-actions/actions/contract-tests@contract-tests-v1.1.0
       with:
         test_service_port: 8000
         token: ${{ inputs.github_token }}
diff --git a/.github/actions/install-erlang/action.yml b/.github/actions/install-erlang/action.yml
new file mode 100644
index 0000000..76f4738
--- /dev/null
+++ b/.github/actions/install-erlang/action.yml
@@ -0,0 +1,50 @@
+name: 'Install Erlang OTP and rebar3'
+description: 'Installs a specific version of Erlang OTP and rebar3'
+inputs:
+  otp_version:
+    description: 'The OTP version to install'
+    required: false
+    default: '25.3.2.19'
+  rebar_version:
+    description: 'The rebar3 version to install'
+    required: false
+    default: '174fd9070195443d693d444ecd1f2b7aa91661fe' # 3.18.0
+runs:
+  using: "composite"
+  steps:
+
+      - name: Install kerl
+        shell: bash
+        run: |
+          curl -s https://raw.githubusercontent.com/kerl/kerl/master/kerl > /tmp/kerl
+          chmod a+x /tmp/kerl
+
+      - name: Install Erlang OTP and rebar3
+        shell: bash
+        run: |
+          # Build and install Erlang
+          /tmp/kerl build ${{ inputs.otp_version }} ${{ inputs.otp_version }}
+          /tmp/kerl install ${{ inputs.otp_version }} ~/otp/${{ inputs.otp_version }}
+          # This will make the erlang version available to the current shell.
+          . ~/otp/${{ inputs.otp_version }}/activate
+          # Persist to the github actions path for use in future steps.
+          echo "$HOME/otp/${{ inputs.otp_version }}/bin" >> "$GITHUB_PATH"
+
+          # Install specific rebar3 version
+          cd ~/
+          git clone https://github.com/erlang/rebar3.git
+          cd rebar3
+          git checkout ${{ matrix.versions.rebar }}
+          ./bootstrap
+          ./rebar3 local install
+
+          # Add to the path for use in this step.
+          export PATH=$HOME/otp/${{ inputs.otp_version }}/.cache/rebar3/bin:$PATH
+          # Persist to the github actions path for use in future steps.
+          echo "$HOME/otp/${{ inputs.otp_version }}/.cache/rebar3/bin" >> "$GITHUB_PATH"
+
+          # Verify installation
+          echo "Installed Erlang version:"
+          erl -noshell -eval 'io:format("~s~n", [erlang:system_info(otp_release)]), halt().'
+          echo "Installed rebar3 version:"
+          rebar3 --version
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6a00350..f29e9db 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,23 +18,24 @@ jobs:
       fail-fast: false
       matrix:
         versions:
-        - {os: 'ubuntu-20.04', otp: '21.x', rebar: '3.15.2'}
-        - {os: 'ubuntu-22.04', otp: '25.x', rebar: '3.18.0'}
-        - {os: 'ubuntu-22.04', otp: '27.x', rebar: '3.23.0'}
+          - { otp: "21.3.8.24", rebar: "0be8717a4ff5b4a0c3dcef5031fe9833197d861e" } # rebar 3.15.2
+          - { otp: "25.3.2.19", rebar: "174fd9070195443d693d444ecd1f2b7aa91661fe" } # rebar 3.18.0
+          - { otp: "27.3.2", rebar: "bde4b54248d16280b2c70a244aca3bb7566e2033" } # rebar 3.23.0
 
-    runs-on: ${{ matrix.versions.os }}
+    runs-on: ubuntu-24.04
     name: Build and Test - ${{ matrix.versions.otp }}
 
     steps:
-      - uses: erlef/setup-beam@v1
-        with:
-          version-type: loose
-          otp-version: ${{ matrix.versions.otp }}
-          rebar3-version: ${{ matrix.versions.rebar }}
       - uses: actions/checkout@v3
         with:
           fetch-depth: 0
 
+      - name: Install Erlang and rebar3
+        uses: ./.github/actions/install-erlang
+        with:
+          otp_version: ${{ matrix.versions.otp }}
+          rebar_version: ${{ matrix.versions.rebar }}
+
       - uses: ./.github/actions/ci
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/manual-publish-docs.yml b/.github/workflows/manual-publish-docs.yml
index 62fc6d2..d3b5a7c 100644
--- a/.github/workflows/manual-publish-docs.yml
+++ b/.github/workflows/manual-publish-docs.yml
@@ -4,18 +4,17 @@ on:
 name: Publish Documentation
 jobs:
   build-publish:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     # Needed to get tokens during publishing.
     permissions:
       id-token: write
       contents: write # Need to publish github pages.
     steps:
-      - uses: erlef/setup-beam@v1
-        with:
-          version-type: loose
-          otp-version: 25.x
-          rebar3-version: 3.18.0
       - uses: actions/checkout@v3
+      
+      - name: Install Erlang and rebar3
+        uses: ./.github/actions/install-erlang
+
       - id: build
         name: Build Documentation
         uses: ./.github/actions/build-docs
diff --git a/.github/workflows/manual-publish.yml b/.github/workflows/manual-publish.yml
index aa8fee5..9bf6a05 100644
--- a/.github/workflows/manual-publish.yml
+++ b/.github/workflows/manual-publish.yml
@@ -9,18 +9,17 @@ on:
 
 jobs:
   manual-build-publish:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     # Needed to get tokens during publishing.
     permissions:
       id-token: write
       contents: read
     steps:
-      - uses: erlef/setup-beam@v1
-        with:
-          version-type: loose
-          otp-version: 25.x
-          rebar3-version: 3.18.0
       - uses: actions/checkout@v3
+      
+      - name: Install Erlang and rebar3
+        uses: ./.github/actions/install-erlang
+
       - id: build-and-test
         # Build using the same steps from CI.
         name: Build and Test
diff --git a/.github/workflows/release-please.yml b/.github/workflows/release-please.yml
index 3ff2d2a..4859ee2 100644
--- a/.github/workflows/release-please.yml
+++ b/.github/workflows/release-please.yml
@@ -7,7 +7,7 @@ on:
 
 jobs:
   release-package:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     permissions: 
       id-token: write # Needed if using OIDC to get release secrets.
       contents: write # Contents and pull-requests are for release-please to make releases.
@@ -21,18 +21,15 @@ jobs:
           token: ${{secrets.GITHUB_TOKEN}}
           default-branch: main
 
-      - uses: erlef/setup-beam@v1
-        if: ${{ steps.release.outputs.releases_created }}
-        with:
-          version-type: loose
-          otp-version: 25.x
-          rebar3-version: 3.18.0
-          
       - uses: actions/checkout@v3
         if: ${{ steps.release.outputs.releases_created }}
         with:
           fetch-depth: 0 #If you only need the current version keep this.
 
+      - name: Install Erlang and rebar3
+        if: ${{ steps.release.outputs.releases_created }}
+        uses: ./.github/actions/install-erlang
+
       - uses: ./.github/actions/configure-rebar
         with:
           aws_assume_role: ${{ vars.AWS_ROLE_ARN }}