diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index b3c4264..4f34379 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -1,6 +1,6 @@
 {
 	"name": "linkerd-extension-init",
-	"image": "ghcr.io/linkerd/dev:v39",
+	"image": "ghcr.io/linkerd/dev:v43",
 	"extensions": [
 		"DavidAnson.vscode-markdownlint",
 		"kokakiwi.vscode-just",
diff --git a/.github/actions/docker-build/action.yml b/.github/actions/docker-build/action.yml
index 8f239f0..c3715ab 100644
--- a/.github/actions/docker-build/action.yml
+++ b/.github/actions/docker-build/action.yml
@@ -34,7 +34,7 @@ runs:
 
     - uses: docker/setup-qemu-action@27d0a4f181a40b142cce983c5393082c365d1480
     - uses: docker/setup-buildx-action@94ab11c41e45d028884a99163086648e898eed25
-    - uses: linkerd/dev/actions/setup-tools@v39
+    - uses: linkerd/dev/actions/setup-tools@v43
     - env:
         DOCKER_TARGET: ${{ inputs.docker-target }}
         DOCKER_PUSH: ${{ inputs.docker-push }}
@@ -46,7 +46,7 @@ runs:
         just build-image ${{ inputs.docker-registry }} ${{ inputs.tag }}
 
     # Delete older docker images to prevent cache bloat.
-    - uses: linkerd/dev/actions/setup-tools@v39
+    - uses: linkerd/dev/actions/setup-tools@v43
     - shell: bash
       run: just-dev prune-action-cache ${{ env.DOCKER_BUILDKIT_CACHE }}
 
diff --git a/.github/workflows/actions.yml b/.github/workflows/actions.yml
index 2873014..3e7e3f4 100644
--- a/.github/workflows/actions.yml
+++ b/.github/workflows/actions.yml
@@ -14,13 +14,13 @@ jobs:
     runs-on: ubuntu-20.04
     timeout-minutes: 10
     steps:
-      - uses: linkerd/dev/actions/setup-tools@v41
+      - uses: linkerd/dev/actions/setup-tools@v43
       - uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9
       - run: just-dev lint-actions
 
   devcontainer-versions:
     runs-on: ubuntu-latest
     steps:
-      - uses: linkerd/dev/actions/setup-tools@v41
+      - uses: linkerd/dev/actions/setup-tools@v43
       - uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9
       - run: just-dev check-action-images
diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 5443cc8..62574fa 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -22,7 +22,7 @@ jobs:
   fmt:
     timeout-minutes: 5
     runs-on: ubuntu-latest
-    container: ghcr.io/linkerd/dev:v39-rust
+    container: ghcr.io/linkerd/dev:v43-rust
     steps:
       - uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9
       - run: just rs-check-fmt
@@ -30,7 +30,7 @@ jobs:
   clippy:
     timeout-minutes: 10
     runs-on: ubuntu-latest
-    container: ghcr.io/linkerd/dev:v39-rust
+    container: ghcr.io/linkerd/dev:v43-rust
     steps:
       - uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9
       - run: just rs-fetch
@@ -41,7 +41,7 @@ jobs:
     name: test
     runs-on: ubuntu-latest
     timeout-minutes: 15
-    container: ghcr.io/linkerd/dev:v39-rust
+    container: ghcr.io/linkerd/dev:v43-rust
     steps:
       - uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9
       - run: just rs-fetch
diff --git a/.github/workflows/integration.yml b/.github/workflows/integration.yml
index bb75dad..af5eb5f 100644
--- a/.github/workflows/integration.yml
+++ b/.github/workflows/integration.yml
@@ -12,6 +12,6 @@ jobs:
     timeout-minutes: 20
     steps:
     - uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9
-    - uses: linkerd/dev/actions/setup-tools@v41
+    - uses: linkerd/dev/actions/setup-tools@v43
     - run: just build
     - run: just integration-test