diff --git a/.github/workflows/notify-wrappers.yml b/.github/workflows/notify-wrappers.yml
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+++ b/.github/workflows/notify-wrappers.yml
@@ -0,0 +1,62 @@
+# Tells the cross-platform wrappers (Flutter, Expo, KMP) that a new native SDK
+# release exists. Each wrapper's native-sdk-bump.yml picks the event up, bumps
+# its pinned native version, and opens a PR (with any integration work done by
+# an agent on top).
+#
+# iOS releases are created by hand (tag-version.yml only pings Slack), so
+# `release: published` fires for them. `published` rather than `created`:
+# `created` also fires for drafts.
+#
+# Requires the WRAPPER_DISPATCH_TOKEN secret: a fine-grained PAT (or GitHub App
+# token) with "Contents: read & write" on every repo in WRAPPER_REPOS — that is
+# the permission the repository_dispatch API checks. GITHUB_TOKEN cannot
+# dispatch into other repositories.
+name: Notify wrapper SDKs
+
+on:
+  release:
+    types: [published]
+  workflow_dispatch:
+    inputs:
+      version:
+        description: Released version to announce (e.g. 4.18.0)
+        required: true
+        type: string
+
+permissions:
+  contents: read
+
+env:
+  PLATFORM: ios
+  WRAPPER_REPOS: superwall/Superwall-Flutter superwall/expo-superwall superwall/Superwall-KMP
+
+jobs:
+  dispatch:
+    runs-on: ubuntu-latest
+    # Wrappers only ship stable native versions.
+    if: github.event_name != 'release' || !github.event.release.prerelease
+    steps:
+      - name: Dispatch native-sdk-release
+        env:
+          GH_TOKEN: ${{ secrets.WRAPPER_DISPATCH_TOKEN }}
+          VERSION: ${{ inputs.version || github.event.release.tag_name }}
+        run: |
+          VERSION="${VERSION#v}"
+          if ! [[ "$VERSION" =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
+            echo "::notice::'$VERSION' is not a stable x.y.z version, not notifying wrappers."
+            exit 0
+          fi
+          failed=0
+          for repo in $WRAPPER_REPOS; do
+            # One wrapper being unreachable must not stop the others.
+            if gh api "repos/$repo/dispatches" \
+                 -f event_type=native-sdk-release \
+                 -f "client_payload[platform]=$PLATFORM" \
+                 -f "client_payload[version]=$VERSION"; then
+              echo "Notified $repo of $PLATFORM $VERSION"
+            else
+              echo "::error::Could not dispatch to $repo"
+              failed=1
+            fi
+          done
+          exit $failed