diff --git a/docker-compose.yaml b/docker-compose.yaml
index c87f9bb..39fab59 100644
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -22,7 +22,7 @@ services:
 
   model-server-empty:
     # Keep the version in sync with the modelix version in gradle/libs.versions.toml
-    image: modelix/model-server:8.20.0
+    image: modelix/model-server:9.1.0
     container_name: ${COMPOSE_PROJECT_NAME}-model-server-empty
     profiles:
       - useCase1
@@ -32,7 +32,7 @@ services:
 
   model-server:
     # Keep the version in sync with the modelix version in gradle/libs.versions.toml
-    image: modelix/model-server:8.20.0
+    image: modelix/model-server:9.1.0
     container_name: ${COMPOSE_PROJECT_NAME}-model-server
     profiles:
       - useCase2
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 151ce6e..e535d9d 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -14,7 +14,7 @@ mpsGradlePlugin = "1.7.288.4ea765f"
 # * mps/metamodel-api-ts/package.json
 # * spa-management-vue/package.json
 # * spa-overview-angular/package.json
-modelixCore = "8.20.0"
+modelixCore = "9.1.0"
 mpsModelServerSyncPlugin = "2021.2.157"
 
 # backend 1 / SPA
diff --git a/mps/metamodel-api-ts/package-lock.json b/mps/metamodel-api-ts/package-lock.json
index 1ed192f..4effdba 100644
--- a/mps/metamodel-api-ts/package-lock.json
+++ b/mps/metamodel-api-ts/package-lock.json
@@ -12,13 +12,13 @@
         "typescript": "^5.1.6"
       },
       "peerDependencies": {
-        "@modelix/ts-model-api": "8.20.0"
+        "@modelix/ts-model-api": "9.1.0"
       }
     },
     "node_modules/@modelix/ts-model-api": {
-      "version": "8.20.0",
-      "resolved": "https://artifacts.itemis.cloud/repository/npm-open/@modelix/ts-model-api/-/ts-model-api-8.20.0.tgz",
-      "integrity": "sha512-lXYOWBdBbUQ2dxpuIbphiMFWhYwF8GvF+dCMbBAa3F9cKGzlPJ6Qk/fQsT77+xgbFL3D6ueY62IUOquS7B01oQ==",
+      "version": "9.1.0",
+      "resolved": "https://artifacts.itemis.cloud/repository/npm-open/@modelix/ts-model-api/-/ts-model-api-9.1.0.tgz",
+      "integrity": "sha512-JGZ7xs2/rEPa0NmX/7WnI2u9QC0tgn1LELOGWp666MoUZqmbUMV4wDdhCUy+Li6uzMixP1eegUiySaYCOg9N8g==",
       "license": "Apache 2.0",
       "peer": true,
       "engines": {
@@ -48,9 +48,9 @@
   },
   "dependencies": {
     "@modelix/ts-model-api": {
-      "version": "8.20.0",
-      "resolved": "https://artifacts.itemis.cloud/repository/npm-open/@modelix/ts-model-api/-/ts-model-api-8.20.0.tgz",
-      "integrity": "sha512-lXYOWBdBbUQ2dxpuIbphiMFWhYwF8GvF+dCMbBAa3F9cKGzlPJ6Qk/fQsT77+xgbFL3D6ueY62IUOquS7B01oQ==",
+      "version": "9.1.0",
+      "resolved": "https://artifacts.itemis.cloud/repository/npm-open/@modelix/ts-model-api/-/ts-model-api-9.1.0.tgz",
+      "integrity": "sha512-JGZ7xs2/rEPa0NmX/7WnI2u9QC0tgn1LELOGWp666MoUZqmbUMV4wDdhCUy+Li6uzMixP1eegUiySaYCOg9N8g==",
       "peer": true
     },
     "@tsconfig/recommended": {
diff --git a/mps/metamodel-api-ts/package.json b/mps/metamodel-api-ts/package.json
index 285d8f6..afd7187 100644
--- a/mps/metamodel-api-ts/package.json
+++ b/mps/metamodel-api-ts/package.json
@@ -18,6 +18,6 @@
   "dependencies": {
   },
   "peerDependencies": {
-    "@modelix/ts-model-api": "8.20.0"
+    "@modelix/ts-model-api": "9.1.0"
   }
 }
diff --git a/spa-management-vue/package-lock.json b/spa-management-vue/package-lock.json
index db42fa3..0ef618a 100644
--- a/spa-management-vue/package-lock.json
+++ b/spa-management-vue/package-lock.json
@@ -9,7 +9,7 @@
       "version": "0.0.0",
       "dependencies": {
         "@mdi/font": "7.3.67",
-        "@modelix/vue-model-api": "8.20.0",
+        "@modelix/vue-model-api": "9.1.0",
         "core-js": "^3.33.1",
         "date-fns": "^2.30.0",
         "metamodel-api-ts": "file:../mps/metamodel-api-ts/build/packages/metamodel-api-ts-1.0.0.tgz",
@@ -65,11 +65,11 @@
       }
     },
     "node_modules/@aws-sdk/types": {
-      "version": "3.654.0",
-      "resolved": "https://registry.npmjs.org/@aws-sdk/types/-/types-3.654.0.tgz",
-      "integrity": "sha512-VWvbED3SV+10QJIcmU/PKjsKilsTV16d1I7/on4bvD/jo1qGeMXqLDBSen3ks/tuvXZF/mFc7ZW/W2DiLVtO7A==",
+      "version": "3.679.0",
+      "resolved": "https://registry.npmjs.org/@aws-sdk/types/-/types-3.679.0.tgz",
+      "integrity": "sha512-NwVq8YvInxQdJ47+zz4fH3BRRLC6lL+WLkvr242PVBbUOLRyK/lkwHlfiKUoeVIMyK5NF+up6TRg71t/8Bny6Q==",
       "dependencies": {
-        "@smithy/types": "^3.4.2",
+        "@smithy/types": "^3.5.0",
         "tslib": "^2.6.2"
       },
       "engines": {
@@ -243,38 +243,49 @@
       "integrity": "sha512-SWxvzRbUQRfewlIV+OF4/YF4DkeTjMWoT8Hh9yeU/5UBVdJZj9Uf4a9+cXjknSIhIaMxZ/4N1O/s7ojApOOGjg=="
     },
     "node_modules/@modelix/model-client": {
-      "version": "8.20.0",
-      "resolved": "https://artifacts.itemis.cloud/repository/npm-open/@modelix/model-client/-/model-client-8.20.0.tgz",
-      "integrity": "sha512-KwC8Va/Y+pxsFr+gXYxkpze/b3UWWz8eNvHDst2LNKuw9S6zg7QjKvqWfboLExgE1d3WfXsUO+cmRrjf+KX4NQ==",
+      "version": "9.1.1",
+      "resolved": "https://artifacts.itemis.cloud/repository/npm-open/@modelix/model-client/-/model-client-9.1.1.tgz",
+      "integrity": "sha512-u3qYNmu+oWaUYy9e0chLVf3DZtKy5rOe3u0pk2snuA5bGduUEtP/haYcr/MACG/72jvE7E73o4LfqZb9CPfCzg==",
       "dependencies": {
         "@aws-crypto/sha256-js": "^5.0.0",
         "@js-joda/core": "3.2.0",
-        "@modelix/ts-model-api": "8.20.0",
+        "@modelix/ts-model-api": "9.1.1",
         "abort-controller": "3.0.0",
         "format-util": "^1.0.5",
         "js-base64": "^3.4.5",
         "js-sha256": "^0.9.0",
         "node-fetch": "2.6.7",
         "uuid": "^8.3.0",
-        "ws": "8.5.0"
+        "ws": "^8.17.1"
+      }
+    },
+    "node_modules/@modelix/model-client/node_modules/@modelix/ts-model-api": {
+      "version": "9.1.1",
+      "resolved": "https://artifacts.itemis.cloud/repository/npm-open/@modelix/ts-model-api/-/ts-model-api-9.1.1.tgz",
+      "integrity": "sha512-imGW8v4eDE4XTeuQylGLbOsuhKOUmG8wo3BVmleQuPGMcNQzkkkCMndHE/liwIHlEXgEm4CLBgEiMg+wzrRFGw==",
+      "license": "Apache 2.0",
+      "engines": {
+        "node": ">= 10.18.1",
+        "npm": ">= 6.13.4"
       }
     },
     "node_modules/@modelix/ts-model-api": {
-      "version": "8.20.0",
-      "resolved": "https://artifacts.itemis.cloud/repository/npm-open/@modelix/ts-model-api/-/ts-model-api-8.20.0.tgz",
-      "integrity": "sha512-lXYOWBdBbUQ2dxpuIbphiMFWhYwF8GvF+dCMbBAa3F9cKGzlPJ6Qk/fQsT77+xgbFL3D6ueY62IUOquS7B01oQ==",
+      "version": "9.1.0",
+      "resolved": "https://artifacts.itemis.cloud/repository/npm-open/@modelix/ts-model-api/-/ts-model-api-9.1.0.tgz",
+      "integrity": "sha512-JGZ7xs2/rEPa0NmX/7WnI2u9QC0tgn1LELOGWp666MoUZqmbUMV4wDdhCUy+Li6uzMixP1eegUiySaYCOg9N8g==",
       "license": "Apache 2.0",
+      "peer": true,
       "engines": {
         "node": ">= 10.18.1",
         "npm": ">= 6.13.4"
       }
     },
     "node_modules/@modelix/vue-model-api": {
-      "version": "8.20.0",
-      "resolved": "https://artifacts.itemis.cloud/repository/npm-open/@modelix/vue-model-api/-/vue-model-api-8.20.0.tgz",
-      "integrity": "sha512-h8peWax6Nl/6hEOWK8MjxZMQFjQPDbmNDoHVJw9WJp4OE0B+y7oJosR/VZeE6BDhIyeNR3CvgY5gf1kQNw/mRg==",
+      "version": "9.1.0",
+      "resolved": "https://artifacts.itemis.cloud/repository/npm-open/@modelix/vue-model-api/-/vue-model-api-9.1.0.tgz",
+      "integrity": "sha512-sF/QgnprDLLNBbkmE8C+zRy/JMxx7hsxlWToc74SdswIR/PnbywQl24iTU12iog8HPXzWK+VRlzR3hT33Sc1CA==",
       "dependencies": {
-        "@modelix/model-client": "^8.20.0"
+        "@modelix/model-client": "^9.1.0"
       },
       "peerDependencies": {
         "vue": "^3.3.4"
@@ -324,9 +335,9 @@
       }
     },
     "node_modules/@smithy/types": {
-      "version": "3.4.2",
-      "resolved": "https://registry.npmjs.org/@smithy/types/-/types-3.4.2.tgz",
-      "integrity": "sha512-tHiFcfcVedVBHpmHUEUHOCCih8iZbIAYn9NvPsNzaPm/237I3imdDdZoOC8c87H5HBAVEa06tTgb+OcSWV9g5w==",
+      "version": "3.6.0",
+      "resolved": "https://registry.npmjs.org/@smithy/types/-/types-3.6.0.tgz",
+      "integrity": "sha512-8VXK/KzOHefoC65yRgCn5vG1cysPJjHnOVt9d0ybFQSmJgQj152vMn4EkYhGuaOmnnZvCPav/KnYyE6/KsNZ2w==",
       "dependencies": {
         "tslib": "^2.6.2"
       },
@@ -1958,9 +1969,9 @@
     "node_modules/metamodel-api-ts": {
       "version": "1.0.0",
       "resolved": "file:../mps/metamodel-api-ts/build/packages/metamodel-api-ts-1.0.0.tgz",
-      "integrity": "sha512-8ePrTayPEnYZC32dz/PQxzU/GtKOa/5P3GfYicyKt3EKwxHDuxNIKlnf3aQ88eDVtPgDVRxq9zUcq8CIHad6jA==",
+      "integrity": "sha512-94VoPmfP2HSqzf2phox/i0uwneuTmBWM9yKW0wsnt7mHXfC0iCwVlaqe2dBDTkpISqNei+Tn4xdj1Op47gOVQw==",
       "peerDependencies": {
-        "@modelix/ts-model-api": "8.20.0"
+        "@modelix/ts-model-api": "9.1.0"
       }
     },
     "node_modules/micromatch": {
@@ -2545,9 +2556,9 @@
       }
     },
     "node_modules/tslib": {
-      "version": "2.7.0",
-      "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.7.0.tgz",
-      "integrity": "sha512-gLXCKdN1/j47AiHiOkJN69hJmcbGTHI0ImLmbYLHykhgeN0jVGola9yVjFgzCUklsZQMW55o+dW7IXv3RCXDzA=="
+      "version": "2.8.0",
+      "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.8.0.tgz",
+      "integrity": "sha512-jWVzBLplnCmoaTr13V9dYbiQ99wvZRd0vNWaDRg+aVYRcjDF3nDksxFDE/+fkXnKhpnUUkmx5pK/v8mCtLVqZA=="
     },
     "node_modules/type-check": {
       "version": "0.4.0",
@@ -2903,15 +2914,15 @@
       "license": "ISC"
     },
     "node_modules/ws": {
-      "version": "8.5.0",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-8.5.0.tgz",
-      "integrity": "sha512-BWX0SWVgLPzYwF8lTzEy1egjhS4S4OEAHfsO8o65WOVsrnSRGaSiUaa9e0ggGlkMTtBlmOpEXiie9RUcBO86qg==",
+      "version": "8.18.0",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-8.18.0.tgz",
+      "integrity": "sha512-8VbfWfHLbbwu3+N6OKsOMpBdT4kXPDDB9cJk2bJ6mh9ucxdlnNvH1e+roYkKmN9Nxw2yjz7VzeO9oOz2zJ04Pw==",
       "engines": {
         "node": ">=10.0.0"
       },
       "peerDependencies": {
         "bufferutil": "^4.0.1",
-        "utf-8-validate": "^5.0.2"
+        "utf-8-validate": ">=5.0.2"
       },
       "peerDependenciesMeta": {
         "bufferutil": {
diff --git a/spa-management-vue/package.json b/spa-management-vue/package.json
index 17207ae..1abbdc3 100644
--- a/spa-management-vue/package.json
+++ b/spa-management-vue/package.json
@@ -10,7 +10,7 @@
   },
   "dependencies": {
     "@mdi/font": "7.3.67",
-    "@modelix/vue-model-api": "8.20.0",
+    "@modelix/vue-model-api": "9.1.0",
     "core-js": "^3.33.1",
     "date-fns": "^2.30.0",
     "metamodel-api-ts": "file:../mps/metamodel-api-ts/build/packages/metamodel-api-ts-1.0.0.tgz",
diff --git a/spa-overview-angular/package-lock.json b/spa-overview-angular/package-lock.json
index 58f419d..bf1b8e5 100644
--- a/spa-overview-angular/package-lock.json
+++ b/spa-overview-angular/package-lock.json
@@ -16,7 +16,7 @@
         "@angular/platform-browser": "^16.2.12",
         "@angular/platform-browser-dynamic": "^16.2.12",
         "@angular/router": "^16.2.12",
-        "@modelix/model-client": "8.20.0",
+        "@modelix/model-client": "9.1.0",
         "bulma": "^0.9.4",
         "date-fns": "^2.30.0",
         "metamodel-api-ts": "file:../mps/metamodel-api-ts/build/packages/metamodel-api-ts-1.0.0.tgz",
@@ -2957,26 +2957,26 @@
       "dev": true
     },
     "node_modules/@modelix/model-client": {
-      "version": "8.20.0",
-      "resolved": "https://artifacts.itemis.cloud/repository/npm-open/@modelix/model-client/-/model-client-8.20.0.tgz",
-      "integrity": "sha512-KwC8Va/Y+pxsFr+gXYxkpze/b3UWWz8eNvHDst2LNKuw9S6zg7QjKvqWfboLExgE1d3WfXsUO+cmRrjf+KX4NQ==",
+      "version": "9.1.0",
+      "resolved": "https://artifacts.itemis.cloud/repository/npm-open/@modelix/model-client/-/model-client-9.1.0.tgz",
+      "integrity": "sha512-Ip99SFc4zBg/zn6Fja37VsIinx3W7qWjhz+GxGIJVPORB6F+teaJe6zcP0YVuscw7rbpnBnmD4CmuU3MJ/ZL2Q==",
       "dependencies": {
         "@aws-crypto/sha256-js": "^5.0.0",
         "@js-joda/core": "3.2.0",
-        "@modelix/ts-model-api": "8.20.0",
+        "@modelix/ts-model-api": "9.1.0",
         "abort-controller": "3.0.0",
         "format-util": "^1.0.5",
         "js-base64": "^3.4.5",
         "js-sha256": "^0.9.0",
         "node-fetch": "2.6.7",
         "uuid": "^8.3.0",
-        "ws": "8.5.0"
+        "ws": "^8.17.1"
       }
     },
     "node_modules/@modelix/ts-model-api": {
-      "version": "8.20.0",
-      "resolved": "https://artifacts.itemis.cloud/repository/npm-open/@modelix/ts-model-api/-/ts-model-api-8.20.0.tgz",
-      "integrity": "sha512-lXYOWBdBbUQ2dxpuIbphiMFWhYwF8GvF+dCMbBAa3F9cKGzlPJ6Qk/fQsT77+xgbFL3D6ueY62IUOquS7B01oQ==",
+      "version": "9.1.0",
+      "resolved": "https://artifacts.itemis.cloud/repository/npm-open/@modelix/ts-model-api/-/ts-model-api-9.1.0.tgz",
+      "integrity": "sha512-JGZ7xs2/rEPa0NmX/7WnI2u9QC0tgn1LELOGWp666MoUZqmbUMV4wDdhCUy+Li6uzMixP1eegUiySaYCOg9N8g==",
       "license": "Apache 2.0",
       "engines": {
         "node": ">= 10.18.1",
@@ -8720,9 +8720,9 @@
     "node_modules/metamodel-api-ts": {
       "version": "1.0.0",
       "resolved": "file:../mps/metamodel-api-ts/build/packages/metamodel-api-ts-1.0.0.tgz",
-      "integrity": "sha512-8ePrTayPEnYZC32dz/PQxzU/GtKOa/5P3GfYicyKt3EKwxHDuxNIKlnf3aQ88eDVtPgDVRxq9zUcq8CIHad6jA==",
+      "integrity": "sha512-94VoPmfP2HSqzf2phox/i0uwneuTmBWM9yKW0wsnt7mHXfC0iCwVlaqe2dBDTkpISqNei+Tn4xdj1Op47gOVQw==",
       "peerDependencies": {
-        "@modelix/ts-model-api": "8.20.0"
+        "@modelix/ts-model-api": "9.1.0"
       }
     },
     "node_modules/methods": {
@@ -12777,27 +12777,6 @@
         "webpack": "^4.0.0 || ^5.0.0"
       }
     },
-    "node_modules/webpack-dev-server/node_modules/ws": {
-      "version": "8.18.0",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-8.18.0.tgz",
-      "integrity": "sha512-8VbfWfHLbbwu3+N6OKsOMpBdT4kXPDDB9cJk2bJ6mh9ucxdlnNvH1e+roYkKmN9Nxw2yjz7VzeO9oOz2zJ04Pw==",
-      "dev": true,
-      "engines": {
-        "node": ">=10.0.0"
-      },
-      "peerDependencies": {
-        "bufferutil": "^4.0.1",
-        "utf-8-validate": ">=5.0.2"
-      },
-      "peerDependenciesMeta": {
-        "bufferutil": {
-          "optional": true
-        },
-        "utf-8-validate": {
-          "optional": true
-        }
-      }
-    },
     "node_modules/webpack-merge": {
       "version": "5.9.0",
       "resolved": "https://registry.npmjs.org/webpack-merge/-/webpack-merge-5.9.0.tgz",
@@ -13077,15 +13056,15 @@
       "dev": true
     },
     "node_modules/ws": {
-      "version": "8.5.0",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-8.5.0.tgz",
-      "integrity": "sha512-BWX0SWVgLPzYwF8lTzEy1egjhS4S4OEAHfsO8o65WOVsrnSRGaSiUaa9e0ggGlkMTtBlmOpEXiie9RUcBO86qg==",
+      "version": "8.18.0",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-8.18.0.tgz",
+      "integrity": "sha512-8VbfWfHLbbwu3+N6OKsOMpBdT4kXPDDB9cJk2bJ6mh9ucxdlnNvH1e+roYkKmN9Nxw2yjz7VzeO9oOz2zJ04Pw==",
       "engines": {
         "node": ">=10.0.0"
       },
       "peerDependencies": {
         "bufferutil": "^4.0.1",
-        "utf-8-validate": "^5.0.2"
+        "utf-8-validate": ">=5.0.2"
       },
       "peerDependenciesMeta": {
         "bufferutil": {
@@ -15109,26 +15088,26 @@
       "dev": true
     },
     "@modelix/model-client": {
-      "version": "8.20.0",
-      "resolved": "https://artifacts.itemis.cloud/repository/npm-open/@modelix/model-client/-/model-client-8.20.0.tgz",
-      "integrity": "sha512-KwC8Va/Y+pxsFr+gXYxkpze/b3UWWz8eNvHDst2LNKuw9S6zg7QjKvqWfboLExgE1d3WfXsUO+cmRrjf+KX4NQ==",
+      "version": "9.1.0",
+      "resolved": "https://artifacts.itemis.cloud/repository/npm-open/@modelix/model-client/-/model-client-9.1.0.tgz",
+      "integrity": "sha512-Ip99SFc4zBg/zn6Fja37VsIinx3W7qWjhz+GxGIJVPORB6F+teaJe6zcP0YVuscw7rbpnBnmD4CmuU3MJ/ZL2Q==",
       "requires": {
         "@aws-crypto/sha256-js": "^5.0.0",
         "@js-joda/core": "3.2.0",
-        "@modelix/ts-model-api": "8.20.0",
+        "@modelix/ts-model-api": "9.1.0",
         "abort-controller": "3.0.0",
         "format-util": "^1.0.5",
         "js-base64": "^3.4.5",
         "js-sha256": "^0.9.0",
         "node-fetch": "2.6.7",
         "uuid": "^8.3.0",
-        "ws": "8.5.0"
+        "ws": "^8.17.1"
       }
     },
     "@modelix/ts-model-api": {
-      "version": "8.20.0",
-      "resolved": "https://artifacts.itemis.cloud/repository/npm-open/@modelix/ts-model-api/-/ts-model-api-8.20.0.tgz",
-      "integrity": "sha512-lXYOWBdBbUQ2dxpuIbphiMFWhYwF8GvF+dCMbBAa3F9cKGzlPJ6Qk/fQsT77+xgbFL3D6ueY62IUOquS7B01oQ=="
+      "version": "9.1.0",
+      "resolved": "https://artifacts.itemis.cloud/repository/npm-open/@modelix/ts-model-api/-/ts-model-api-9.1.0.tgz",
+      "integrity": "sha512-JGZ7xs2/rEPa0NmX/7WnI2u9QC0tgn1LELOGWp666MoUZqmbUMV4wDdhCUy+Li6uzMixP1eegUiySaYCOg9N8g=="
     },
     "@ngtools/webpack": {
       "version": "16.2.14",
@@ -19513,7 +19492,7 @@
     },
     "metamodel-api-ts": {
       "version": "file:..\\mps\\metamodel-api-ts\\build\\packages\\metamodel-api-ts-1.0.0.tgz",
-      "integrity": "sha512-8ePrTayPEnYZC32dz/PQxzU/GtKOa/5P3GfYicyKt3EKwxHDuxNIKlnf3aQ88eDVtPgDVRxq9zUcq8CIHad6jA==",
+      "integrity": "sha512-94VoPmfP2HSqzf2phox/i0uwneuTmBWM9yKW0wsnt7mHXfC0iCwVlaqe2dBDTkpISqNei+Tn4xdj1Op47gOVQw==",
       "requires": {}
     },
     "methods": {
@@ -22510,13 +22489,6 @@
             "range-parser": "^1.2.1",
             "schema-utils": "^4.0.0"
           }
-        },
-        "ws": {
-          "version": "8.18.0",
-          "resolved": "https://registry.npmjs.org/ws/-/ws-8.18.0.tgz",
-          "integrity": "sha512-8VbfWfHLbbwu3+N6OKsOMpBdT4kXPDDB9cJk2bJ6mh9ucxdlnNvH1e+roYkKmN9Nxw2yjz7VzeO9oOz2zJ04Pw==",
-          "dev": true,
-          "requires": {}
         }
       }
     },
@@ -22693,9 +22665,9 @@
       "dev": true
     },
     "ws": {
-      "version": "8.5.0",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-8.5.0.tgz",
-      "integrity": "sha512-BWX0SWVgLPzYwF8lTzEy1egjhS4S4OEAHfsO8o65WOVsrnSRGaSiUaa9e0ggGlkMTtBlmOpEXiie9RUcBO86qg==",
+      "version": "8.18.0",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-8.18.0.tgz",
+      "integrity": "sha512-8VbfWfHLbbwu3+N6OKsOMpBdT4kXPDDB9cJk2bJ6mh9ucxdlnNvH1e+roYkKmN9Nxw2yjz7VzeO9oOz2zJ04Pw==",
       "requires": {}
     },
     "xml-name-validator": {
diff --git a/spa-overview-angular/package.json b/spa-overview-angular/package.json
index d6e42c3..0c3e5e0 100644
--- a/spa-overview-angular/package.json
+++ b/spa-overview-angular/package.json
@@ -18,7 +18,7 @@
     "@angular/platform-browser": "^16.2.12",
     "@angular/platform-browser-dynamic": "^16.2.12",
     "@angular/router": "^16.2.12",
-    "@modelix/model-client": "8.20.0",
+    "@modelix/model-client": "9.1.0",
     "bulma": "^0.9.4",
     "date-fns": "^2.30.0",
     "metamodel-api-ts": "file:../mps/metamodel-api-ts/build/packages/metamodel-api-ts-1.0.0.tgz",