diff --git a/package.json b/package.json
index 830c3b2bd..e30d0a278 100644
--- a/package.json
+++ b/package.json
@@ -108,7 +108,7 @@
     "jison": "^0.4.18",
     "js-yaml": "^4.1.0",
     "jsdom": "^22.0.0",
-    "langium-cli": "2.1.0",
+    "langium-cli": "3.0.1",
     "lint-staged": "^13.2.1",
     "nyc": "^15.1.0",
     "path-browserify": "^1.0.1",
diff --git a/packages/parser/package.json b/packages/parser/package.json
index aa9c08f42..b937e37b9 100644
--- a/packages/parser/package.json
+++ b/packages/parser/package.json
@@ -34,7 +34,7 @@
     "ast"
   ],
   "dependencies": {
-    "langium": "2.1.2"
+    "langium": "3.0.0"
   },
   "devDependencies": {
     "chevrotain": "^11.0.3"
diff --git a/packages/parser/src/language/info/module.ts b/packages/parser/src/language/info/module.ts
index 17f1fb4eb..83933aeef 100644
--- a/packages/parser/src/language/info/module.ts
+++ b/packages/parser/src/language/info/module.ts
@@ -1,11 +1,16 @@
 import type {
-  DefaultSharedModuleContext,
-  LangiumServices,
-  LangiumSharedServices,
+  DefaultSharedCoreModuleContext,
+  LangiumCoreServices,
+  LangiumSharedCoreServices,
   Module,
-  PartialLangiumServices,
+  PartialLangiumCoreServices,
+} from 'langium';
+import {
+  EmptyFileSystem,
+  createDefaultCoreModule,
+  createDefaultSharedCoreModule,
+  inject,
 } from 'langium';
-import { EmptyFileSystem, createDefaultModule, createDefaultSharedModule, inject } from 'langium';
 
 import { CommonValueConverter } from '../common/index.js';
 import { InfoGeneratedModule, MermaidGeneratedSharedModule } from '../generated/module.js';
@@ -24,13 +29,13 @@ type InfoAddedServices = {
 /**
  * Union of Langium default services and `Info` services.
  */
-export type InfoServices = LangiumServices & InfoAddedServices;
+export type InfoServices = LangiumCoreServices & InfoAddedServices;
 
 /**
  * Dependency injection module that overrides Langium default services and
  * contributes the declared `Info` services.
  */
-export const InfoModule: Module<InfoServices, PartialLangiumServices & InfoAddedServices> = {
+export const InfoModule: Module<InfoServices, PartialLangiumCoreServices & InfoAddedServices> = {
   parser: {
     TokenBuilder: () => new InfoTokenBuilder(),
     ValueConverter: () => new CommonValueConverter(),
@@ -51,16 +56,16 @@ export const InfoModule: Module<InfoServices, PartialLangiumServices & InfoAdded
  * @param context - Optional module context with the LSP connection
  * @returns An object wrapping the shared services and the language-specific services
  */
-export function createInfoServices(context: DefaultSharedModuleContext = EmptyFileSystem): {
-  shared: LangiumSharedServices;
+export function createInfoServices(context: DefaultSharedCoreModuleContext = EmptyFileSystem): {
+  shared: LangiumSharedCoreServices;
   Info: InfoServices;
 } {
-  const shared: LangiumSharedServices = inject(
-    createDefaultSharedModule(context),
+  const shared: LangiumSharedCoreServices = inject(
+    createDefaultSharedCoreModule(context),
     MermaidGeneratedSharedModule
   );
   const Info: InfoServices = inject(
-    createDefaultModule({ shared }),
+    createDefaultCoreModule({ shared }),
     InfoGeneratedModule,
     InfoModule
   );
diff --git a/packages/parser/src/language/packet/module.ts b/packages/parser/src/language/packet/module.ts
index 460d5e535..40c68916a 100644
--- a/packages/parser/src/language/packet/module.ts
+++ b/packages/parser/src/language/packet/module.ts
@@ -1,11 +1,17 @@
 import type {
-  DefaultSharedModuleContext,
-  LangiumServices,
-  LangiumSharedServices,
+  DefaultSharedCoreModuleContext,
+  LangiumCoreServices,
+  LangiumSharedCoreServices,
   Module,
-  PartialLangiumServices,
+  PartialLangiumCoreServices,
 } from 'langium';
-import { EmptyFileSystem, createDefaultModule, createDefaultSharedModule, inject } from 'langium';
+import {
+  EmptyFileSystem,
+  createDefaultCoreModule,
+  createDefaultSharedCoreModule,
+  inject,
+} from 'langium';
+
 import { CommonValueConverter } from '../common/valueConverter.js';
 import { MermaidGeneratedSharedModule, PacketGeneratedModule } from '../generated/module.js';
 import { PacketTokenBuilder } from './tokenBuilder.js';
@@ -23,13 +29,16 @@ type PacketAddedServices = {
 /**
  * Union of Langium default services and `Packet` services.
  */
-export type PacketServices = LangiumServices & PacketAddedServices;
+export type PacketServices = LangiumCoreServices & PacketAddedServices;
 
 /**
  * Dependency injection module that overrides Langium default services and
  * contributes the declared `Packet` services.
  */
-export const PacketModule: Module<PacketServices, PartialLangiumServices & PacketAddedServices> = {
+export const PacketModule: Module<
+  PacketServices,
+  PartialLangiumCoreServices & PacketAddedServices
+> = {
   parser: {
     TokenBuilder: () => new PacketTokenBuilder(),
     ValueConverter: () => new CommonValueConverter(),
@@ -50,16 +59,16 @@ export const PacketModule: Module<PacketServices, PartialLangiumServices & Packe
  * @param context - Optional module context with the LSP connection
  * @returns An object wrapping the shared services and the language-specific services
  */
-export function createPacketServices(context: DefaultSharedModuleContext = EmptyFileSystem): {
-  shared: LangiumSharedServices;
+export function createPacketServices(context: DefaultSharedCoreModuleContext = EmptyFileSystem): {
+  shared: LangiumSharedCoreServices;
   Packet: PacketServices;
 } {
-  const shared: LangiumSharedServices = inject(
-    createDefaultSharedModule(context),
+  const shared: LangiumSharedCoreServices = inject(
+    createDefaultSharedCoreModule(context),
     MermaidGeneratedSharedModule
   );
   const Packet: PacketServices = inject(
-    createDefaultModule({ shared }),
+    createDefaultCoreModule({ shared }),
     PacketGeneratedModule,
     PacketModule
   );
diff --git a/packages/parser/src/language/pie/module.ts b/packages/parser/src/language/pie/module.ts
index 8777abc86..b85daee68 100644
--- a/packages/parser/src/language/pie/module.ts
+++ b/packages/parser/src/language/pie/module.ts
@@ -1,11 +1,16 @@
 import type {
-  DefaultSharedModuleContext,
-  LangiumServices,
-  LangiumSharedServices,
+  DefaultSharedCoreModuleContext,
+  LangiumCoreServices,
+  LangiumSharedCoreServices,
   Module,
-  PartialLangiumServices,
+  PartialLangiumCoreServices,
+} from 'langium';
+import {
+  EmptyFileSystem,
+  createDefaultCoreModule,
+  createDefaultSharedCoreModule,
+  inject,
 } from 'langium';
-import { EmptyFileSystem, createDefaultModule, createDefaultSharedModule, inject } from 'langium';
 
 import { MermaidGeneratedSharedModule, PieGeneratedModule } from '../generated/module.js';
 import { PieTokenBuilder } from './tokenBuilder.js';
@@ -24,13 +29,13 @@ type PieAddedServices = {
 /**
  * Union of Langium default services and `Pie` services.
  */
-export type PieServices = LangiumServices & PieAddedServices;
+export type PieServices = LangiumCoreServices & PieAddedServices;
 
 /**
  * Dependency injection module that overrides Langium default services and
  * contributes the declared `Pie` services.
  */
-export const PieModule: Module<PieServices, PartialLangiumServices & PieAddedServices> = {
+export const PieModule: Module<PieServices, PartialLangiumCoreServices & PieAddedServices> = {
   parser: {
     TokenBuilder: () => new PieTokenBuilder(),
     ValueConverter: () => new PieValueConverter(),
@@ -51,15 +56,19 @@ export const PieModule: Module<PieServices, PartialLangiumServices & PieAddedSer
  * @param context - Optional module context with the LSP connection
  * @returns An object wrapping the shared services and the language-specific services
  */
-export function createPieServices(context: DefaultSharedModuleContext = EmptyFileSystem): {
-  shared: LangiumSharedServices;
+export function createPieServices(context: DefaultSharedCoreModuleContext = EmptyFileSystem): {
+  shared: LangiumSharedCoreServices;
   Pie: PieServices;
 } {
-  const shared: LangiumSharedServices = inject(
-    createDefaultSharedModule(context),
+  const shared: LangiumSharedCoreServices = inject(
+    createDefaultSharedCoreModule(context),
     MermaidGeneratedSharedModule
   );
-  const Pie: PieServices = inject(createDefaultModule({ shared }), PieGeneratedModule, PieModule);
+  const Pie: PieServices = inject(
+    createDefaultCoreModule({ shared }),
+    PieGeneratedModule,
+    PieModule
+  );
   shared.ServiceRegistry.register(Pie);
   return { shared, Pie };
 }
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 15e066ed0..518bc6cd1 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -155,8 +155,8 @@ importers:
         specifier: ^22.0.0
         version: 22.0.0
       langium-cli:
-        specifier: 2.1.0
-        version: 2.1.0
+        specifier: 3.0.1
+        version: 3.0.1
       lint-staged:
         specifier: ^13.2.1
         version: 13.2.3
@@ -496,8 +496,8 @@ importers:
   packages/parser:
     dependencies:
       langium:
-        specifier: 2.1.2
-        version: 2.1.2
+        specifier: 3.0.0
+        version: 3.0.0
     devDependencies:
       chevrotain:
         specifier: ^11.0.3
@@ -11968,8 +11968,8 @@ packages:
     engines: {node: '>=12'}
     dev: true
 
-  /langium-cli@2.1.0:
-    resolution: {integrity: sha512-Gbj4CvfAc1gP/6ihxikd2Je95j1FWjXZu8bbji2/t2vQ6kEP+vs9Fx7kSGOM0AbU/hjZfy6E35bJPOdwsiyqTA==}
+  /langium-cli@3.0.1:
+    resolution: {integrity: sha512-s1R/4GKkWItfu2o05DxqP71ID5MiGqb1BfXyPeFvIO3+aRSCj6fCj9EXtasvf18lSTUe27H37aO66TNU9VRr+Q==}
     engines: {node: '>=16.0.0'}
     hasBin: true
     dependencies:
@@ -11977,20 +11977,20 @@ packages:
       commander: 11.0.0
       fs-extra: 11.1.1
       jsonschema: 1.4.1
-      langium: 2.1.2
-      langium-railroad: 2.1.0
+      langium: 3.0.0
+      langium-railroad: 3.0.0
       lodash: 4.17.21
     dev: true
 
-  /langium-railroad@2.1.0:
-    resolution: {integrity: sha512-2IeAIUSTQzbDjNnJA+0ql8tyN/mhCSN4FS50Mo9LOtLj523qUEBwHflDmCiOGZzW9iZdni6NXJgh8nLqjhTlDw==}
+  /langium-railroad@3.0.0:
+    resolution: {integrity: sha512-GQOnQBGl5gJqzgK/4bKvJO5QhJGNnprpYH6Fghbl4FviVLHwP6yzyqiouDelLSoCadChCr2JqKaBp5HXv7CgWw==}
     dependencies:
-      langium: 2.1.2
+      langium: 3.0.0
       railroad-diagrams: 1.0.0
     dev: true
 
-  /langium@2.1.2:
-    resolution: {integrity: sha512-1NDUmhm111xs6NLh1DzQ9YPrOhL6JqJryY9igPIGrG0AbKKGmGf3fahAiY1MUChwIYSec6Fvoj+igwKzvGXQog==}
+  /langium@3.0.0:
+    resolution: {integrity: sha512-+Ez9EoiByeoTu/2BXmEaZ06iPNXM6thWJp02KfBO/raSMyCJ4jw7AkWWa+zBCTm0+Tw1Fj9FOxdqSskyN5nAwg==}
     engines: {node: '>=16.0.0'}
     dependencies:
       chevrotain: 11.0.3