diff --git a/docs/changelog.md b/docs/changelog.md
index bf05c23..f1950f6 100644
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -2,7 +2,13 @@
 
 All notable changes to this project will be documented in this file.
 
-## [1.1.26] - Current
+## [1.1.27] - Current
+
+### Fixed
+
+- **Pin `@keycloak/keycloak-admin-client` to 26.5.6**: Version 26.6.0 has a broken postinstall script that fails in CI environments with a `packageManager` field. Pinned to last known-good version.
+
+## [1.1.26]
 
 ### Fixed
 
diff --git a/package.json b/package.json
index c7c3905..b278af1 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@red-hat-developer-hub/e2e-test-utils",
-  "version": "1.1.26",
+  "version": "1.1.27",
   "description": "Test utilities for RHDH E2E tests",
   "license": "Apache-2.0",
   "repository": {
@@ -68,6 +68,7 @@
     "clean": "rm -rf dist",
     "lint:check": "eslint . --ignore-pattern dist --ignore-pattern README.md --ignore-pattern docs",
     "lint:fix": "eslint . --fix --ignore-pattern dist --ignore-pattern README.md --ignore-pattern docs",
+    "prepack": "yarn build",
     "prepublishOnly": "yarn build",
     "prettier:check": "prettier --check . '!dist' '!README.md' '!docs' '!.github/workflows/deploy-docs.yml'",
     "prettier:fix": "prettier --write . '!dist' '!README.md' '!docs' '!.github/workflows/deploy-docs.yml'",
@@ -104,7 +105,7 @@
     "@axe-core/playwright": "^4.11.0",
     "@backstage-community/plugin-rbac-common": "1.23.0",
     "@eslint/js": "^9.39.1",
-    "@keycloak/keycloak-admin-client": "^26.0.0",
+    "@keycloak/keycloak-admin-client": "26.5.6",
     "@kubernetes/client-node": "^1.4.0",
     "eslint": "^9.39.1",
     "eslint-plugin-check-file": "^3.3.1",
diff --git a/src/deployment/orchestrator/install-orchestrator.sh b/src/deployment/orchestrator/install-orchestrator.sh
index fb27c35..94e347d 100755
--- a/src/deployment/orchestrator/install-orchestrator.sh
+++ b/src/deployment/orchestrator/install-orchestrator.sh
@@ -105,9 +105,7 @@ log::success() {
 # Operator subscription and status
 # ---------------------------------------------------------------------------
 install_subscription() {
-  local name=$1 namespace=$2 channel=$3 package=$4 source_name=$5 source_namespace=$6 starting_csv=${7:-}
-  local spec_extra=""
-  [[ -n "$starting_csv" ]] && spec_extra="  startingCSV: $starting_csv"
+  local name=$1 namespace=$2 channel=$3 package=$4 source_name=$5 source_namespace=$6
   oc apply -f - << EOD
 apiVersion: operators.coreos.com/v1alpha1
 kind: Subscription
@@ -120,7 +118,6 @@ spec:
   name: $package
   source: $source_name
   sourceNamespace: $source_namespace
-${spec_extra}
 EOD
   return 0
 }
diff --git a/yarn.lock b/yarn.lock
index a0cbddb..02e52a7 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -217,13 +217,13 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@keycloak/keycloak-admin-client@npm:^26.0.0":
-  version: 26.4.7
-  resolution: "@keycloak/keycloak-admin-client@npm:26.4.7"
+"@keycloak/keycloak-admin-client@npm:26.5.6":
+  version: 26.5.6
+  resolution: "@keycloak/keycloak-admin-client@npm:26.5.6"
   dependencies:
     camelize-ts: ^3.0.0
     url-template: ^3.1.1
-  checksum: 973af8c11fb61d648fac7e7b767d52849dd409d1fcee33b36e72c7096e266943cbd2f8f00ebcb47bca59b2a3c106e7853ba7179c730c3eb429cbea39f7c53171
+  checksum: 1e996590de8f191dbe616622102895b358c4e31274a7770b3bba2039fc2e64ce9a67ca6cbf6e823d39e061891c25c29b4342b199f20cc3e04937509cf3975843
   languageName: node
   linkType: hard
 
@@ -377,7 +377,7 @@ __metadata:
     "@backstage-community/plugin-rbac-common": 1.23.0
     "@backstage/catalog-model": 1.7.5
     "@eslint/js": ^9.39.1
-    "@keycloak/keycloak-admin-client": ^26.0.0
+    "@keycloak/keycloak-admin-client": 26.5.6
     "@kubernetes/client-node": ^1.4.0
     "@playwright/test": ^1.57.0
     "@types/fs-extra": ^11.0.4