diff --git a/packages/json/src/browser/json-frontend-module.ts b/packages/json/src/browser/json-frontend-module.ts
index cb621de82e9df..74419b567a8d4 100644
--- a/packages/json/src/browser/json-frontend-module.ts
+++ b/packages/json/src/browser/json-frontend-module.ts
@@ -17,13 +17,10 @@
 import { ContainerModule } from 'inversify';
 import { LanguageClientContribution } from '@theia/languages/lib/browser';
 import { JsonClientContribution } from './json-client-contribution';
-import { JsonGrammarContribution } from './json-grammar-contribution';
-import { LanguageGrammarDefinitionContribution } from '@theia/monaco/lib/browser/textmate';
 import { bindJsonPreferences } from './json-preferences';
 
 export default new ContainerModule(bind => {
     bindJsonPreferences(bind);
 
     bind(LanguageClientContribution).to(JsonClientContribution).inSingletonScope();
-    bind(LanguageGrammarDefinitionContribution).to(JsonGrammarContribution).inSingletonScope();
 });
diff --git a/packages/json/data/json.tmLanguage.json b/packages/textmate-grammars/data/json.tmLanguage.json
similarity index 100%
rename from packages/json/data/json.tmLanguage.json
rename to packages/textmate-grammars/data/json.tmLanguage.json
diff --git a/packages/json/data/jsonc.tmLanguage.json b/packages/textmate-grammars/data/jsonc.tmLanguage.json
similarity index 100%
rename from packages/json/data/jsonc.tmLanguage.json
rename to packages/textmate-grammars/data/jsonc.tmLanguage.json
diff --git a/packages/json/src/browser/json-grammar-contribution.ts b/packages/textmate-grammars/src/browser/json.ts
similarity index 85%
rename from packages/json/src/browser/json-grammar-contribution.ts
rename to packages/textmate-grammars/src/browser/json.ts
index ff973af6909b8..989f4c52d2a6f 100644
--- a/packages/json/src/browser/json-grammar-contribution.ts
+++ b/packages/textmate-grammars/src/browser/json.ts
@@ -16,10 +16,11 @@
 
 import { LanguageGrammarDefinitionContribution, TextmateRegistry, GrammarDefinition } from '@theia/monaco/lib/browser/textmate';
 import { injectable } from 'inversify';
-import { JSON_LANGUAGE_ID, JSONC_LANGUAGE_ID } from '../common';
 
 @injectable()
-export class JsonGrammarContribution implements LanguageGrammarDefinitionContribution {
+export class JsonContribution implements LanguageGrammarDefinitionContribution {
+    readonly JSON_LANGUAGE_ID = 'json';
+    readonly JSONC_LANGUAGE_ID = 'jsonc';
 
     readonly config: monaco.languages.LanguageConfiguration = {
         'comments': {
@@ -43,7 +44,7 @@ export class JsonGrammarContribution implements LanguageGrammarDefinitionContrib
 
     registerTextmateLanguage(registry: TextmateRegistry): void {
         monaco.languages.register({
-            id: JSON_LANGUAGE_ID,
+            id: this.JSON_LANGUAGE_ID,
             'aliases': [
                 'JSON',
                 'json'
@@ -69,7 +70,7 @@ export class JsonGrammarContribution implements LanguageGrammarDefinitionContrib
             ]
         });
 
-        monaco.languages.setLanguageConfiguration(JSON_LANGUAGE_ID, this.config);
+        monaco.languages.setLanguageConfiguration(this.JSON_LANGUAGE_ID, this.config);
 
         const jsonGrammar = require('../../data/json.tmLanguage.json');
         registry.registerTextmateGrammarScope('source.json', {
@@ -81,11 +82,11 @@ export class JsonGrammarContribution implements LanguageGrammarDefinitionContrib
             }
         });
 
-        registry.mapLanguageIdToTextmateGrammar(JSON_LANGUAGE_ID, 'source.json');
+        registry.mapLanguageIdToTextmateGrammar(this.JSON_LANGUAGE_ID, 'source.json');
 
         // jsonc
         monaco.languages.register({
-            id: JSONC_LANGUAGE_ID,
+            id: this.JSONC_LANGUAGE_ID,
             'aliases': [
                 'JSON with Comments'
             ],
@@ -94,7 +95,7 @@ export class JsonGrammarContribution implements LanguageGrammarDefinitionContrib
             ]
         });
 
-        monaco.languages.setLanguageConfiguration(JSONC_LANGUAGE_ID, this.config);
+        monaco.languages.setLanguageConfiguration(this.JSONC_LANGUAGE_ID, this.config);
 
         const jsoncGrammar = require('../../data/jsonc.tmLanguage.json');
         registry.registerTextmateGrammarScope('source.json.comments', {
@@ -105,6 +106,6 @@ export class JsonGrammarContribution implements LanguageGrammarDefinitionContrib
                 };
             }
         });
-        registry.mapLanguageIdToTextmateGrammar(JSONC_LANGUAGE_ID, 'source.json.comments');
+        registry.mapLanguageIdToTextmateGrammar(this.JSONC_LANGUAGE_ID, 'source.json.comments');
     }
 }
diff --git a/packages/textmate-grammars/src/browser/textmate-grammars-frontend-module.ts b/packages/textmate-grammars/src/browser/textmate-grammars-frontend-module.ts
index 6eac2213b4754..5e548699b524e 100644
--- a/packages/textmate-grammars/src/browser/textmate-grammars-frontend-module.ts
+++ b/packages/textmate-grammars/src/browser/textmate-grammars-frontend-module.ts
@@ -56,6 +56,7 @@ import { GoContribution } from './go';
 import { RustContribution } from './rust';
 import { PhpGrammarContribution } from './php';
 import { CppContribution } from './cpp';
+import { JsonContribution } from './json';
 
 export default new ContainerModule(bind => {
     bind(BatContribution).toSelf().inSingletonScope();
@@ -177,4 +178,7 @@ export default new ContainerModule(bind => {
 
     bind(CppContribution).toSelf().inSingletonScope();
     bind(LanguageGrammarDefinitionContribution).toService(CppContribution);
+
+    bind(JsonContribution).toSelf().inSingletonScope();
+    bind(LanguageGrammarDefinitionContribution).toService(JsonContribution);
 });