diff --git a/.changeset/gorgeous-hairs-applaud.md b/.changeset/gorgeous-hairs-applaud.md
new file mode 100644
index 0000000000..7793c6591e
--- /dev/null
+++ b/.changeset/gorgeous-hairs-applaud.md
@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-search-backend-node': patch
+---
+
+Wait for indexer initialization before finalizing indexing.
diff --git a/.changeset/renovate-4bb70f3.md b/.changeset/renovate-4bb70f3.md
new file mode 100644
index 0000000000..3a9054011f
--- /dev/null
+++ b/.changeset/renovate-4bb70f3.md
@@ -0,0 +1,17 @@
+---
+'@backstage/core-app-api': patch
+'@backstage/core-components': patch
+'@backstage/core-plugin-api': patch
+'@backstage/dev-utils': patch
+'@backstage/test-utils': patch
+'@backstage/types': patch
+'@backstage/plugin-catalog-react': patch
+'@backstage/plugin-catalog': patch
+'@backstage/plugin-config-schema': patch
+'@backstage/plugin-scaffolder-backend': patch
+'@backstage/plugin-scaffolder': patch
+'@backstage/plugin-shortcuts': patch
+'@backstage/plugin-user-settings': patch
+---
+
+Updated dependency `zen-observable` to `^0.9.0`.
diff --git a/.changeset/weak-ears-jam.md b/.changeset/weak-ears-jam.md
new file mode 100644
index 0000000000..8f20937998
--- /dev/null
+++ b/.changeset/weak-ears-jam.md
@@ -0,0 +1,5 @@
+---
+'@backstage/integration': patch
+---
+
+Added `integrations.github.apps.allowedInstallationOwners` to the configuration schema.
diff --git a/REVIEWING.md b/REVIEWING.md
index 469ac249f7..500e15701d 100644
--- a/REVIEWING.md
+++ b/REVIEWING.md
@@ -171,6 +171,37 @@ Exported types can be marked with either `@public`, `@alpha` or `@beta` release
 
 If a package does not have this configuration, then all exported types are considered stable, even if they are marked as `@alpha` or `@beta`.
 
+#### Changes that are Not Considered Breaking
+
+There are a few exceptions that are not considered breaking in the [versioning policy](https://backstage.io/docs/overview/versioning-policy#changes-that-are-not-considered-breaking),
+primarily regarding Utility APIs and Backend Service interfaces (referred to "contracts" below) that are supplied by the
+Backstage core packages.
+
+Example of a non-breaking change to a contract which has a default
+implementation, since consumers typically only interact with that contract as
+callers of existing methods:
+
+```diff
+ export interface MyService {
+   oldMethod(): void;
++  newMethod(): void;
+ }
+```
+
+Changes such as these must still be marked with `**BREAKING PRODUCERS**:` in the
+changelog, to highlight them for those who might be implementing custom
+implementations of those contracts or putting mocks of the contract in tests.
+
+Example of a breaking change to a contract, which affects existing consumers and
+therefore makes it NOT fall under these exceptions:
+
+```diff
+ export interface MyService {
+-   oldMethod(): void;
++   oldMethod(): Promise<void>;
+ }
+```
+
 #### Type Contract Direction
 
 An important distinction to make when looking at changes to an API Report is the direction of the contract of a changed type, that is, whether it's used as input or output from the user's point of view. In the next two sections we'll dive into the different directions of a type contract, and how it affects whether a change is breaking or not.
diff --git a/docs/auth/index.md b/docs/auth/index.md
index ab04d3ed87..5702e96cee 100644
--- a/docs/auth/index.md
+++ b/docs/auth/index.md
@@ -258,9 +258,58 @@ Passport-supported authentication method.
 
 ## Custom ScmAuthApi Implementation
 
-If you are using any custom authentication providers, like for example one for GitHub Enterprise, then you are likely to need a custom implementation of the [`ScmAuthApi`](https://backstage.io/docs/reference/integration-react.scmauthapi). It is an API used to authenticate towards different SCM systems in a generic way, based on what resource is being accessed, and is used for example by the Scaffolder (Software Templates) and Catalog Import plugins.
+The default `ScmAuthAPi` provides integrations for `github`, `gitlab`, `azure` and `bitbucket` and is created by the following code in `packages/app/src/apis.ts`:
 
-To set up a custom `ScmAuthApi` implementation, you'll need to add an API factory entry to `packages/app/src/apis.ts`. The following example shows an implementation that supports both public GitHub via `githubAuthApi` as well as a GitHub Enterprise installation hosted at `ghe.example.com` via `gheAuthApi`:
+```ts
+ScmAuth.createDefaultApiFactory();
+```
+
+If you require only a subset of these integrations, then you will need a custom implementation of the [`ScmAuthApi`](https://backstage.io/docs/reference/integration-react.scmauthapi). It is an API used to authenticate different SCM systems generically, based on what resource is being accessed, and is used for example, by the Scaffolder (Software Templates) and Catalog Import plugins.
+
+The first step is to remove the code that creates the default providers.
+
+```diff
+ import {
+   ScmIntegrationsApi,
+   scmIntegrationsApiRef,
++   ScmAuth,
+ } from '@backstage/integration-react';
+
+ export const apis: AnyApiFactory[] = [
+...
++  ScmAuth.createDefaultApiFactory(),
+...
+ ];
+```
+
+Then replace it with something like this, which will create an `ApiFactory` with only a github provider.
+
+```ts
+export const apis: AnyApiFactory[] = [
+  createApiFactory({
+    api: scmAuthApiRef,
+    deps: {
+      githubAuthApi: githubAuthApiRef,
+    },
+    factory: ({ githubAuthApi }) =>
+      ScmAuth.merge(
+        ScmAuth.forGithub(githubAuthApi),
+      ),
+  });
+```
+
+If you use any custom authentication integrations, a new provider can be added to the `ApiFactory`.
+
+The first step is to create a new authentication ref, which follows the naming convention of `xxxAuthApiRef`. The example below is for a new GitHub enterprise integration which can be defined either inside the app itself if it's only used for this purpose or inside a common internal package for APIs, such as `@internal/apis`:
+
+```ts
+const gheAuthApiRef: ApiRef<OAuthApi & ProfileInfoApi & SessionApi> =
+  createApiRef({
+    id: 'internal.auth.ghe',
+  });
+```
+
+The new ref is then used to add a new provider to the ApiFactory:
 
 ```ts
 createApiFactory({
@@ -278,3 +327,14 @@ createApiFactory({
     ),
 });
 ```
+
+Finally, you also need to add and configure another provider to the `auth-backend` using the provider ID, which in this example is `ghe`:
+
+```ts
+import { providers } from '@backstage/plugin-auth-backend';
+
+// Add the following options to `createRouter` in packages/backend/src/plugins/auth.ts
+providerFactories: {
+  ghe: providers.github.create(),
+},
+```
diff --git a/docs/getting-started/index.md b/docs/getting-started/index.md
index 477467bb88..16e361a19f 100644
--- a/docs/getting-started/index.md
+++ b/docs/getting-started/index.md
@@ -34,6 +34,7 @@ guide to do a repository-based installation.
   - [Package manager](https://nodejs.org/en/download/package-manager/)
   - [Using NodeSource packages](https://github.com/nodesource/distributions/blob/master/README.md)
 - `yarn` [Installation](https://classic.yarnpkg.com/en/docs/install)
+  - You will need to use Yarn classic to create a new project, but it can then be [migrated to Yarn 3](../tutorials/yarn-migration.md)
 - `docker` [installation](https://docs.docker.com/engine/install/)
 - `git` [installation](https://github.com/git-guides/install-git)
 - If the system is not directly accessible over your network the following ports
diff --git a/docs/overview/versioning-policy.md b/docs/overview/versioning-policy.md
index a989f104b5..10ffc82188 100644
--- a/docs/overview/versioning-policy.md
+++ b/docs/overview/versioning-policy.md
@@ -99,7 +99,7 @@ This versioning is completely decoupled from the Backstage release versioning,
 meaning you might for example have `@backstage/core-plugin-api` version `3.1.4`
 be part of the `1.12` Backstage release.
 
-Following versioning policy applies to all packages:
+The following versioning policy applies to all packages:
 
 - Breaking changes are noted in the changelog, and documentation is updated.
 - Breaking changes are prefixed with `**BREAKING**: ` in the changelog.
@@ -120,6 +120,25 @@ For packages at version `1.0.0` or above, the following policy also applies:
   changes without a deprecation period, but the changes must still adhere to
   semver.
 
+### Changes that are Not Considered Breaking
+
+There are a few changes that would typically be considered breaking changes, but
+that we make exceptions for. This is both to be able to evolve the project more
+rapidly, also because the alternative ends up having a bigger impact on users.
+
+For all Utility APIs and Backend Services that _have_ a built-in implementation,
+we only consider the API stability for consumers of those interfaces. This means
+that it is not considered a breaking change to break the contract for producers
+of the interface.
+
+Changes that fall under the above rule, must be marked with
+`**BREAKING PRODUCERS**:` in the changelog.
+
+For any case of dependency injection, it is not considered a breaking change to
+add a dependency on a Utility API or Backend Service that is provided by the
+framework. This includes any dependency that is provided by the
+`@backstage/app-defaults` and `@backstage/backend-defaults` packages.
+
 ### Release Stages
 
 The release stages(`@alpha`, `@beta` `@public`) refers to the
diff --git a/packages/app/package.json b/packages/app/package.json
index 1d4735441a..9978a0d515 100644
--- a/packages/app/package.json
+++ b/packages/app/package.json
@@ -80,7 +80,7 @@
     "react-router": "^6.3.0",
     "react-router-dom": "^6.3.0",
     "react-use": "^17.2.4",
-    "zen-observable": "^0.8.15"
+    "zen-observable": "^0.9.0"
   },
   "devDependencies": {
     "@backstage/test-utils": "workspace:^",
diff --git a/packages/core-app-api/package.json b/packages/core-app-api/package.json
index 95e76b4782..b5972bf308 100644
--- a/packages/core-app-api/package.json
+++ b/packages/core-app-api/package.json
@@ -39,7 +39,7 @@
     "@types/prop-types": "^15.7.3",
     "prop-types": "^15.7.2",
     "react-use": "^17.2.4",
-    "zen-observable": "^0.8.15",
+    "zen-observable": "^0.9.0",
     "zod": "^3.11.6"
   },
   "peerDependencies": {
diff --git a/packages/core-components/package.json b/packages/core-components/package.json
index b47473819d..4a7fec9ef1 100644
--- a/packages/core-components/package.json
+++ b/packages/core-components/package.json
@@ -67,7 +67,7 @@
     "react-virtualized-auto-sizer": "^1.0.6",
     "react-window": "^1.8.6",
     "remark-gfm": "^3.0.1",
-    "zen-observable": "^0.8.15",
+    "zen-observable": "^0.9.0",
     "zod": "^3.11.6"
   },
   "peerDependencies": {
diff --git a/packages/core-plugin-api/package.json b/packages/core-plugin-api/package.json
index 099b259ba7..ae9914fc77 100644
--- a/packages/core-plugin-api/package.json
+++ b/packages/core-plugin-api/package.json
@@ -38,7 +38,7 @@
     "@backstage/version-bridge": "workspace:^",
     "history": "^5.0.0",
     "prop-types": "^15.7.2",
-    "zen-observable": "^0.8.15"
+    "zen-observable": "^0.9.0"
   },
   "peerDependencies": {
     "@types/react": "^16.13.1 || ^17.0.0",
diff --git a/packages/dev-utils/package.json b/packages/dev-utils/package.json
index 7f567e61a9..08c2a2c305 100644
--- a/packages/dev-utils/package.json
+++ b/packages/dev-utils/package.json
@@ -47,7 +47,7 @@
     "@testing-library/react": "^12.1.3",
     "@testing-library/user-event": "^14.0.0",
     "react-use": "^17.2.4",
-    "zen-observable": "^0.8.15"
+    "zen-observable": "^0.9.0"
   },
   "peerDependencies": {
     "@types/react": "^16.13.1 || ^17.0.0",
diff --git a/packages/integration/config.d.ts b/packages/integration/config.d.ts
index 49a121aff3..a1eb7aceb9 100644
--- a/packages/integration/config.d.ts
+++ b/packages/integration/config.d.ts
@@ -189,6 +189,14 @@ export interface Config {
          * @visibility secret
          */
         clientSecret: string;
+        /**
+         * List of installation owners allowed to be used by this GitHub app. The GitHub UI does not provide a way to list the installations.
+         * However you can list the installations with the GitHub API. You can find the list of installations here:
+         * https://api.github.com/app/installations
+         * The relevant documentation for this is here.
+         * https://docs.github.com/en/rest/reference/apps#list-installations-for-the-authenticated-app--code-samples
+         */
+        allowedInstallationOwners?: string[];
       }>;
     }>;
 
diff --git a/packages/test-utils/package.json b/packages/test-utils/package.json
index 757eddd449..fb8dff4192 100644
--- a/packages/test-utils/package.json
+++ b/packages/test-utils/package.json
@@ -45,7 +45,7 @@
     "@testing-library/react": "^12.1.3",
     "@testing-library/user-event": "^14.0.0",
     "cross-fetch": "^3.1.5",
-    "zen-observable": "^0.8.15"
+    "zen-observable": "^0.9.0"
   },
   "peerDependencies": {
     "@types/react": "^16.13.1 || ^17.0.0",
diff --git a/packages/types/package.json b/packages/types/package.json
index 2cc3b0e5b8..eaf2723155 100644
--- a/packages/types/package.json
+++ b/packages/types/package.json
@@ -35,7 +35,7 @@
     "@backstage/cli": "workspace:^",
     "@types/zen-observable": "^0.8.0",
     "luxon": "^3.0.0",
-    "zen-observable": "^0.8.15"
+    "zen-observable": "^0.9.0"
   },
   "files": [
     "dist"
diff --git a/plugins/catalog-react/package.json b/plugins/catalog-react/package.json
index 9b8de0ce69..b4e40d8546 100644
--- a/plugins/catalog-react/package.json
+++ b/plugins/catalog-react/package.json
@@ -54,7 +54,7 @@
     "qs": "^6.9.4",
     "react-use": "^17.2.4",
     "yaml": "^2.0.0",
-    "zen-observable": "^0.8.15"
+    "zen-observable": "^0.9.0"
   },
   "peerDependencies": {
     "@types/react": "^16.13.1 || ^17.0.0",
diff --git a/plugins/catalog/package.json b/plugins/catalog/package.json
index 0220e5c244..1528737aac 100644
--- a/plugins/catalog/package.json
+++ b/plugins/catalog/package.json
@@ -51,7 +51,7 @@
     "lodash": "^4.17.21",
     "react-helmet": "6.1.0",
     "react-use": "^17.2.4",
-    "zen-observable": "^0.8.15"
+    "zen-observable": "^0.9.0"
   },
   "peerDependencies": {
     "@types/react": "^16.13.1 || ^17.0.0",
diff --git a/plugins/config-schema/package.json b/plugins/config-schema/package.json
index a7dc17deb3..c2ed4e49f7 100644
--- a/plugins/config-schema/package.json
+++ b/plugins/config-schema/package.json
@@ -34,7 +34,7 @@
     "@material-ui/lab": "4.0.0-alpha.57",
     "jsonschema": "^1.2.6",
     "react-use": "^17.2.4",
-    "zen-observable": "^0.8.15"
+    "zen-observable": "^0.9.0"
   },
   "peerDependencies": {
     "react": "^16.13.1 || ^17.0.0"
diff --git a/plugins/scaffolder-backend/package.json b/plugins/scaffolder-backend/package.json
index dcca4d382e..d5371053ca 100644
--- a/plugins/scaffolder-backend/package.json
+++ b/plugins/scaffolder-backend/package.json
@@ -77,7 +77,7 @@
     "vm2": "^3.9.11",
     "winston": "^3.2.1",
     "yaml": "^2.0.0",
-    "zen-observable": "^0.8.15",
+    "zen-observable": "^0.9.0",
     "zod": "^3.11.6"
   },
   "devDependencies": {
diff --git a/plugins/scaffolder/package.json b/plugins/scaffolder/package.json
index 18c522b91e..adb7461dd9 100644
--- a/plugins/scaffolder/package.json
+++ b/plugins/scaffolder/package.json
@@ -74,7 +74,7 @@
     "react-use": "^17.2.4",
     "use-immer": "^0.7.0",
     "yaml": "^2.0.0",
-    "zen-observable": "^0.8.15",
+    "zen-observable": "^0.9.0",
     "zod": "^3.11.6",
     "zod-to-json-schema": "^3.18.1"
   },
diff --git a/plugins/search-backend-node/src/indexing/BatchSearchEngineIndexer.ts b/plugins/search-backend-node/src/indexing/BatchSearchEngineIndexer.ts
index 24b90c2a59..043e2c1953 100644
--- a/plugins/search-backend-node/src/indexing/BatchSearchEngineIndexer.ts
+++ b/plugins/search-backend-node/src/indexing/BatchSearchEngineIndexer.ts
@@ -111,6 +111,12 @@ export abstract class BatchSearchEngineIndexer extends Writable {
    */
   async _final(done: (error?: Error | null) => void) {
     try {
+      const maybeError = await this.initialized;
+      if (maybeError) {
+        done(maybeError);
+        return;
+      }
+
       // Index any remaining documents.
       if (this.currentBatch.length) {
         await this.index(this.currentBatch);
diff --git a/plugins/shortcuts/package.json b/plugins/shortcuts/package.json
index 40ef908779..773c6e019a 100644
--- a/plugins/shortcuts/package.json
+++ b/plugins/shortcuts/package.json
@@ -34,7 +34,7 @@
     "react-hook-form": "^7.12.2",
     "react-use": "^17.2.4",
     "uuid": "^8.3.2",
-    "zen-observable": "^0.8.15"
+    "zen-observable": "^0.9.0"
   },
   "peerDependencies": {
     "react": "^16.13.1 || ^17.0.0",
diff --git a/plugins/user-settings/package.json b/plugins/user-settings/package.json
index 1fcbed7fde..b8db3a5b03 100644
--- a/plugins/user-settings/package.json
+++ b/plugins/user-settings/package.json
@@ -43,7 +43,7 @@
     "@material-ui/lab": "4.0.0-alpha.57",
     "@types/react": "^16.13.1 || ^17.0.0",
     "react-use": "^17.2.4",
-    "zen-observable": "^0.8.15"
+    "zen-observable": "^0.9.0"
   },
   "peerDependencies": {
     "react": "^16.13.1 || ^17.0.0",
diff --git a/storybook/yarn.lock b/storybook/yarn.lock
index b0789605a4..3317acf774 100644
--- a/storybook/yarn.lock
+++ b/storybook/yarn.lock
@@ -7875,28 +7875,17 @@ __metadata:
   linkType: hard
 
 "loader-utils@npm:^1.2.3":
-  version: 1.4.1
-  resolution: "loader-utils@npm:1.4.1"
+  version: 1.4.2
+  resolution: "loader-utils@npm:1.4.2"
   dependencies:
     big.js: ^5.2.2
     emojis-list: ^3.0.0
     json5: ^1.0.1
-  checksum: ea0b648cba0194e04a90aab6270619f0e35be009e33a443d9e642e93056cd49e6ca4c9678bd1c777a2392551bc5f4d0f24a87f5040608da1274aa84c6eebb502
+  checksum: eb6fb622efc0ffd1abdf68a2022f9eac62bef8ec599cf8adb75e94d1d338381780be6278534170e99edc03380a6d29bc7eb1563c89ce17c5fed3a0b17f1ad804
   languageName: node
   linkType: hard
 
-"loader-utils@npm:^2.0.0":
-  version: 2.0.2
-  resolution: "loader-utils@npm:2.0.2"
-  dependencies:
-    big.js: ^5.2.2
-    emojis-list: ^3.0.0
-    json5: ^2.1.2
-  checksum: 9078d1ed47cadc57f4c6ddbdb2add324ee7da544cea41de3b7f1128e8108fcd41cd3443a85b7ee8d7d8ac439148aa221922774efe4cf87506d4fb054d5889303
-  languageName: node
-  linkType: hard
-
-"loader-utils@npm:^2.0.3":
+"loader-utils@npm:^2.0.0, loader-utils@npm:^2.0.3":
   version: 2.0.4
   resolution: "loader-utils@npm:2.0.4"
   dependencies:
diff --git a/yarn.lock b/yarn.lock
index f64ac93992..b1531e5db9 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3269,7 +3269,7 @@ __metadata:
     react-router-dom-stable: "npm:react-router-dom@^6.3.0"
     react-router-stable: "npm:react-router@^6.3.0"
     react-use: ^17.2.4
-    zen-observable: ^0.8.15
+    zen-observable: ^0.9.0
     zod: ^3.11.6
   peerDependencies:
     "@types/react": ^16.13.1 || ^17.0.0
@@ -3390,7 +3390,7 @@ __metadata:
     react-virtualized-auto-sizer: ^1.0.6
     react-window: ^1.8.6
     remark-gfm: ^3.0.1
-    zen-observable: ^0.8.15
+    zen-observable: ^0.9.0
     zod: ^3.11.6
   peerDependencies:
     "@types/react": ^16.13.1 || ^17.0.0
@@ -3422,7 +3422,7 @@ __metadata:
     history: ^5.0.0
     msw: ^0.48.0
     prop-types: ^15.7.2
-    zen-observable: ^0.8.15
+    zen-observable: ^0.9.0
   peerDependencies:
     "@types/react": ^16.13.1 || ^17.0.0
     react: ^16.13.1 || ^17.0.0
@@ -3477,7 +3477,7 @@ __metadata:
     "@testing-library/user-event": ^14.0.0
     "@types/node": ^16.0.0
     react-use: ^17.2.4
-    zen-observable: ^0.8.15
+    zen-observable: ^0.9.0
   peerDependencies:
     "@types/react": ^16.13.1 || ^17.0.0
     react: ^16.13.1 || ^17.0.0
@@ -4712,7 +4712,7 @@ __metadata:
     react-test-renderer: ^16.13.1
     react-use: ^17.2.4
     yaml: ^2.0.0
-    zen-observable: ^0.8.15
+    zen-observable: ^0.9.0
   peerDependencies:
     "@types/react": ^16.13.1 || ^17.0.0
     react: ^16.13.1 || ^17.0.0
@@ -4752,7 +4752,7 @@ __metadata:
     lodash: ^4.17.21
     react-helmet: 6.1.0
     react-use: ^17.2.4
-    zen-observable: ^0.8.15
+    zen-observable: ^0.9.0
   peerDependencies:
     "@types/react": ^16.13.1 || ^17.0.0
     react: ^16.13.1 || ^17.0.0
@@ -5020,7 +5020,7 @@ __metadata:
     jsonschema: ^1.2.6
     msw: ^0.48.0
     react-use: ^17.2.4
-    zen-observable: ^0.8.15
+    zen-observable: ^0.9.0
   peerDependencies:
     react: ^16.13.1 || ^17.0.0
   languageName: unknown
@@ -6571,7 +6571,7 @@ __metadata:
     vm2: ^3.9.11
     winston: ^3.2.1
     yaml: ^2.0.0
-    zen-observable: ^0.8.15
+    zen-observable: ^0.9.0
     zod: ^3.11.6
   languageName: unknown
   linkType: soft
@@ -6645,7 +6645,7 @@ __metadata:
     react-use: ^17.2.4
     use-immer: ^0.7.0
     yaml: ^2.0.0
-    zen-observable: ^0.8.15
+    zen-observable: ^0.9.0
     zod: ^3.11.6
     zod-to-json-schema: ^3.18.1
   peerDependencies:
@@ -6882,7 +6882,7 @@ __metadata:
     react-hook-form: ^7.12.2
     react-use: ^17.2.4
     uuid: ^8.3.2
-    zen-observable: ^0.8.15
+    zen-observable: ^0.9.0
   peerDependencies:
     react: ^16.13.1 || ^17.0.0
     react-router: 6.0.0-beta.0 || ^6.3.0
@@ -7476,7 +7476,7 @@ __metadata:
     cross-fetch: ^3.1.5
     msw: ^0.48.0
     react-use: ^17.2.4
-    zen-observable: ^0.8.15
+    zen-observable: ^0.9.0
   peerDependencies:
     react: ^16.13.1 || ^17.0.0
     react-router: 6.0.0-beta.0 || ^6.3.0
@@ -7602,7 +7602,7 @@ __metadata:
     "@types/node": ^16.11.26
     cross-fetch: ^3.1.5
     msw: ^0.48.0
-    zen-observable: ^0.8.15
+    zen-observable: ^0.9.0
   peerDependencies:
     "@types/react": ^16.13.1 || ^17.0.0
     react: ^16.13.1 || ^17.0.0
@@ -7628,7 +7628,7 @@ __metadata:
     "@backstage/cli": "workspace:^"
     "@types/zen-observable": ^0.8.0
     luxon: ^3.0.0
-    zen-observable: ^0.8.15
+    zen-observable: ^0.9.0
   languageName: unknown
   linkType: soft
 
@@ -20886,7 +20886,7 @@ __metadata:
     react-router-dom: ^6.3.0
     react-use: ^17.2.4
     start-server-and-test: ^1.10.11
-    zen-observable: ^0.8.15
+    zen-observable: ^0.9.0
   languageName: unknown
   linkType: soft
 
@@ -37627,6 +37627,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"zen-observable@npm:^0.9.0":
+  version: 0.9.0
+  resolution: "zen-observable@npm:0.9.0"
+  checksum: d770639f7cb47c89e442b0b87e6955079b9d0f3f7da220f081c3a478ee7b837ee792be4ae8764f2d49fe0afaaa3fbcdc7a88042c3ed471df9ae551de90e82ea2
+  languageName: node
+  linkType: hard
+
 "zenscroll@npm:^4.0.2":
   version: 4.0.2
   resolution: "zenscroll@npm:4.0.2"