diff --git a/.github/workflows/docker-hub-latest.yml b/.github/workflows/docker-hub-latest.yml
index 99fdb119..9db91cc0 100644
--- a/.github/workflows/docker-hub-latest.yml
+++ b/.github/workflows/docker-hub-latest.yml
@@ -29,7 +29,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v2
       - name: Set up Docker Buildx
diff --git a/.github/workflows/docker-hub-release.yml b/.github/workflows/docker-hub-release.yml
index acf58f1d..3fb9e000 100644
--- a/.github/workflows/docker-hub-release.yml
+++ b/.github/workflows/docker-hub-release.yml
@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Get release tag
         run: echo "RELEASE_VERSION=${GITHUB_REF#refs/*/}" >> $GITHUB_ENV
       - name: Set up QEMU
diff --git a/.github/workflows/docs-latest.yml b/.github/workflows/docs-latest.yml
index 1223db3b..7d926357 100644
--- a/.github/workflows/docs-latest.yml
+++ b/.github/workflows/docs-latest.yml
@@ -13,7 +13,7 @@ jobs:
   deploy:
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Use Node.js
         uses: actions/setup-node@v3
diff --git a/.github/workflows/docs-release.yml b/.github/workflows/docs-release.yml
index d492fb7f..b5a8b442 100644
--- a/.github/workflows/docs-release.yml
+++ b/.github/workflows/docs-release.yml
@@ -12,7 +12,7 @@ jobs:
   deploy:
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Use Node.js
         uses: actions/setup-node@v3
diff --git a/.github/workflows/helm-lint.yml b/.github/workflows/helm-lint.yml
index 600e5be5..32bf61ee 100644
--- a/.github/workflows/helm-lint.yml
+++ b/.github/workflows/helm-lint.yml
@@ -14,7 +14,7 @@ jobs:
   lint-helm:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Lint Helm
         uses: WyriHaximus/github-action-helm3@v3
diff --git a/.github/workflows/helm.yml b/.github/workflows/helm.yml
index 15d50742..e42604e6 100644
--- a/.github/workflows/helm.yml
+++ b/.github/workflows/helm.yml
@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 2e6a1664..fd6f85c4 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -22,7 +22,7 @@ jobs:
   lint-node:
    runs-on: ubuntu-22.04
    steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Use Node.js
         uses: actions/setup-node@v3
         with:
@@ -33,7 +33,7 @@ jobs:
   lint-rust:
    runs-on: ubuntu-22.04
    steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions-rs/toolchain@v1
         with:
             toolchain: stable
@@ -53,7 +53,7 @@ jobs:
     env:
       HOOKSHOT_BUILD_PROFILE: " " # This is equivalent to dev
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Use Node.js
         uses: actions/setup-node@v3
         with:
@@ -72,7 +72,7 @@ jobs:
     env:
       HOOKSHOT_BUILD_PROFILE: " "
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Use Node.js
         uses: actions/setup-node@v3
         with:
@@ -95,7 +95,7 @@ jobs:
       matrix:
         node_version: [20, 21]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Use Node.js ${{ matrix.node_version }}
         uses: actions/setup-node@v3
         with:
@@ -116,7 +116,7 @@ jobs:
       homerunnersha: ${{ steps.gitsha.outputs.sha }}
     steps:
       - name: Checkout matrix-org/complement
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           repository: matrix-org/complement
       - name: Get complement git sha
@@ -124,7 +124,7 @@ jobs:
         run: echo sha=`git rev-parse --short HEAD` >> "$GITHUB_OUTPUT"
       - name: Cache homerunner
         id: cached
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: homerunner
           key: ${{ runner.os }}-homerunner-${{ steps.gitsha.outputs.sha }}
@@ -156,13 +156,13 @@ jobs:
         run: |
           sudo apt-get update && sudo apt-get install -y libolm3
       - name: Load cached homerunner bin
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: homerunner
           key: ${{ runner.os }}-homerunner-${{ needs.build-synapse.outputs.homerunnersha }}
           fail-on-cache-miss: true # Shouldn't happen, we build this in the needs step.
       - name: Checkout matrix-hookshot
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           path: matrix-hookshot
       # Setup node & run tests
diff --git a/.github/workflows/newsfile.yml b/.github/workflows/newsfile.yml
index ce32d639..21557fa5 100644
--- a/.github/workflows/newsfile.yml
+++ b/.github/workflows/newsfile.yml
@@ -9,7 +9,7 @@ jobs:
   changelog:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with: # Needed for comparison
           fetch-depth: 0
       - uses: actions/setup-python@v1
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 4a7e217e..1d4d97b8 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -6,7 +6,7 @@ jobs:
   draft-release:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Get changelog
         id: extract-changelog
         env: