diff --git a/src/package.ts b/src/package.ts
index 870ff6c..c0c582c 100644
--- a/src/package.ts
+++ b/src/package.ts
@@ -96,11 +96,17 @@ const defaultIgnore = [
 	'**/.DS_Store'
 ];
 
-function collectFiles(cwd: string): Promise<string[]> {
+function devDependenciesIgnore(manifest: Manifest): string[] {
+	const devDependencies = Object.keys(manifest.devDependencies || {});
+	return devDependencies.map(d => `node_modules/${ d }/**`);
+}
+
+function collectFiles(cwd: string, manifest: Manifest): Promise<string[]> {
 	return nfcall<string[]>(glob, '**', { cwd, nodir: true, dot: true }).then(files => {
 		return nfcall<string>(fs.readFile, path.join(cwd, '.vscodeignore'), 'utf8')
 			.catch<string>(err => err.code !== 'ENOENT' ? reject(err) : resolve(''))
 			.then(rawIgnore => rawIgnore.split(/[\n\r]/).map(s => s.trim()).filter(s => !!s))
+			.then(ignore => devDependenciesIgnore(manifest).concat(ignore))
 			.then(ignore => defaultIgnore.concat(ignore))
 			.then(ignore => ignore.filter(i => !/^\s*#/.test(i)))
 			.then(ignore => _.partition(ignore, i => !/^\s*!/.test(i)))
@@ -109,7 +115,7 @@ function collectFiles(cwd: string): Promise<string[]> {
 }
 
 export function collect(cwd: string, manifest: Manifest): Promise<IFile[]> {
-	return all<any>([toVsixManifest(manifest), collectFiles(cwd)])
+	return all<any>([toVsixManifest(manifest), collectFiles(cwd, manifest)])
 		.spread((vsixManifest: string, files: string[]) => [
 			{ path: 'extension.vsixmanifest', contents: new Buffer(vsixManifest, 'utf8') },
 			{ path: '[Content_Types].xml', localPath: path.join(resourcesPath, '[Content_Types].xml') },
diff --git a/test/fixtures/devDependencies/package.json b/test/fixtures/devDependencies/package.json
new file mode 100644
index 0000000..48bf921
--- /dev/null
+++ b/test/fixtures/devDependencies/package.json
@@ -0,0 +1,12 @@
+{
+	"name": "uuid",
+	"publisher": "joaomoreno",
+	"version": "1.0.0",
+	"engines": { "vscode": "*" },
+	"dependencies": {
+		"real": "*"
+	},
+	"devDependencies": {
+		"fake": "*"
+	}
+}
\ No newline at end of file
diff --git a/test/package.test.js b/test/package.test.js
index 0fe49e7..7bac854 100644
--- a/test/package.test.js
+++ b/test/package.test.js
@@ -38,4 +38,18 @@ describe('collect', () => {
 			})
 			.catch(cb);
 	});
+	
+	it('should ignore devDependencies', cb => {
+		const cwd = fixture('devDependencies');
+		
+		readManifest(cwd)
+			.then(manifest => collect(cwd, manifest))
+			.then(files => {
+				assert.equal(files.length, 4);
+				assert.ok(files.some(f => /real\/dependency\.js/.test(f.path)));
+				assert.ok(!files.some(f => /fake\/dependency\.js/.test(f.path)));
+				cb();
+			})
+			.catch(cb);
+	});
 });
\ No newline at end of file