diff --git a/lerna.json b/lerna.json
index 1f9238fb..1dcaa256 100644
--- a/lerna.json
+++ b/lerna.json
@@ -4,5 +4,5 @@
   ],
   "npmClient": "yarn",
   "useWorkspaces": true,
-  "version": "4.8.0"
+  "version": "4.9.0"
 }
diff --git a/packages/aura-language-server/package.json b/packages/aura-language-server/package.json
index 5ab3bd34..3b18f34a 100644
--- a/packages/aura-language-server/package.json
+++ b/packages/aura-language-server/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@salesforce/aura-language-server",
-  "version": "4.8.0",
+  "version": "4.9.0",
   "description": "Language server for Aura components.",
   "main": "lib/aura-indexer/indexer.js",
   "typings": "lib/shared.d.ts",
@@ -27,7 +27,7 @@
     "package": "yarn pack"
   },
   "dependencies": {
-    "@salesforce/lightning-lsp-common": "4.8.0",
+    "@salesforce/lightning-lsp-common": "4.9.0",
     "acorn": "^6.0.0",
     "acorn-loose": "^6.0.0",
     "acorn-walk": "^6.0.0",
diff --git a/packages/lightning-lsp-common/package.json b/packages/lightning-lsp-common/package.json
index 8dab4825..f8ed7736 100644
--- a/packages/lightning-lsp-common/package.json
+++ b/packages/lightning-lsp-common/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@salesforce/lightning-lsp-common",
-  "version": "4.8.0",
+  "version": "4.9.0",
   "description": "Common components for lwc-language-server and aura-language-server.",
   "main": "lib/index.js",
   "typings": "lib/index.d.ts",
diff --git a/packages/lightning-lsp-common/src/__tests__/context.test.ts b/packages/lightning-lsp-common/src/__tests__/context.test.ts
index 001891e1..d2b82f08 100644
--- a/packages/lightning-lsp-common/src/__tests__/context.test.ts
+++ b/packages/lightning-lsp-common/src/__tests__/context.test.ts
@@ -199,7 +199,9 @@ it('configureSfdxProject()', async () => {
     // .forceignore
     const forceignoreContent = fs.readFileSync(forceignorePath, 'utf8');
     expect(forceignoreContent).toContain('**/jsconfig.json');
+    expect(forceignoreContent).toContain('**/tsconfig.json');
     expect(forceignoreContent).toContain('**/.eslintrc.json');
+    expect(forceignoreContent).toContain('**/*.ts');
 
     // typings
     expect(join(sfdxTypingsPath, 'lds.d.ts')).toExist();
diff --git a/packages/lightning-lsp-common/src/context.ts b/packages/lightning-lsp-common/src/context.ts
index fc7660f2..12f0564b 100644
--- a/packages/lightning-lsp-common/src/context.ts
+++ b/packages/lightning-lsp-common/src/context.ts
@@ -588,7 +588,9 @@ export class WorkspaceContext {
 
     private async updateForceIgnoreFile(ignoreFile: string): Promise<void> {
         await utils.appendLineIfMissing(ignoreFile, '**/jsconfig.json');
+        await utils.appendLineIfMissing(ignoreFile, '**/tsconfig.json');
         await utils.appendLineIfMissing(ignoreFile, '**/.eslintrc.json');
+        await utils.appendLineIfMissing(ignoreFile, '**/*.ts');
     }
 
     /**
diff --git a/packages/lwc-language-server/package.json b/packages/lwc-language-server/package.json
index 6988b42f..cba8350f 100644
--- a/packages/lwc-language-server/package.json
+++ b/packages/lwc-language-server/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@salesforce/lwc-language-server",
-  "version": "4.8.0",
+  "version": "4.9.0",
   "description": "Language server for Lightning Web Components.",
   "main": "lib/indexer.js",
   "license": "BSD-3-Clause",
@@ -34,7 +34,7 @@
     "@lwc/template-compiler": "2.50.0",
     "@salesforce/apex": "0.0.12",
     "@salesforce/label": "0.0.12",
-    "@salesforce/lightning-lsp-common": "4.8.0",
+    "@salesforce/lightning-lsp-common": "4.9.0",
     "@salesforce/resourceurl": "0.0.12",
     "@salesforce/schema": "0.0.12",
     "@salesforce/user": "0.0.12",