diff --git a/.github/scripts/validate-manifests.sh b/.github/scripts/validate-manifests.sh
new file mode 100755
index 00000000..72b59d94
--- /dev/null
+++ b/.github/scripts/validate-manifests.sh
@@ -0,0 +1,39 @@
+#!/usr/bin/env bash
+
+set -o errexit
+set -o pipefail
+
+# mirror kustomize-controller build options
+kustomize_flags=("--load-restrictor=LoadRestrictionsNone")
+kustomize_config="kustomization.yaml"
+
+# skip Kubernetes Secrets due to SOPS fields failing validation
+kubeconform_flags=("-skip=Secret")
+kubeconform_config=("-strict" "-ignore-missing-schemas" "-schema-location" "default" "-schema-location" "/tmp/flux-crd-schemas" "-verbose")
+
+echo "🔍 INFO - Downloading Flux OpenAPI schemas"
+mkdir -p /tmp/flux-crd-schemas/master-standalone-strict
+curl -sL https://github.com/fluxcd/flux2/releases/latest/download/crd-schemas.tar.gz | tar zxf - -C /tmp/flux-crd-schemas/master-standalone-strict
+
+find . -type f -name '*.yaml' -print0 | while IFS= read -r -d $'\0' file; do
+  echo "🔍 INFO - Validating $file"
+  yq e 'true' "$file" >/dev/null
+done
+
+echo "🔍 INFO - Validating clusters"
+find ./k8s/clusters -maxdepth 2 -type f -name '*.yaml' -print0 | while IFS= read -r -d $'\0' file; do
+  kubeconform "${kubeconform_flags[@]}" "${kubeconform_config[@]}" "${file}"
+  if [[ ${PIPESTATUS[0]} != 0 ]]; then
+    exit 1
+  fi
+done
+
+echo "🔍 INFO - Validating kustomize overlays"
+find . -type f -name $kustomize_config -print0 | while IFS= read -r -d $'\0' file; do
+  echo "🔍 INFO - Validating kustomization ${file/%$kustomize_config/}"
+  kustomize build "${file/%$kustomize_config/}" "${kustomize_flags[@]}" |
+    kubeconform "${kubeconform_flags[@]}" "${kubeconform_config[@]}"
+  if [[ ${PIPESTATUS[0]} != 0 ]]; then
+    exit 1
+  fi
+done
diff --git a/.github/workflows/update-flux.yaml b/.github/workflows/update-flux.yaml
index 7f9b5f4e..65ade1ca 100644
--- a/.github/workflows/update-flux.yaml
+++ b/.github/workflows/update-flux.yaml
@@ -1,4 +1,4 @@
-name: update-flux
+name: Update Flux
 
 on:
   workflow_dispatch:
@@ -10,7 +10,7 @@ permissions:
   pull-requests: write
 
 jobs:
-  components:
+  update-flux:
     runs-on: ubuntu-latest
     strategy:
       matrix:
diff --git a/.github/workflows/validate-manifests.yaml b/.github/workflows/validate-manifests.yaml
new file mode 100644
index 00000000..99e9d9f5
--- /dev/null
+++ b/.github/workflows/validate-manifests.yaml
@@ -0,0 +1,25 @@
+name: Validate manifests
+
+env:
+    SCRIPTS_DIR: ./.github/scripts
+
+on:
+  pull_request:
+  push:
+    branches: [ '*' ]
+    tags-ignore: [ '*' ]
+
+jobs:
+  validate-manifests:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Setup yq
+        uses: fluxcd/pkg/actions/yq@main
+      - name: Setup kubeconform
+        uses: fluxcd/pkg/actions/kubeconform@main
+      - name: Setup kustomize
+        uses: fluxcd/pkg/actions/kustomize@main
+      - name: Validate manifests
+        run: $SCRIPTS_DIR/validate-manifests.sh
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