diff --git a/test/unit/browser/renderer.html b/test/unit/browser/renderer.html
index 4cde5243af3..57d75bd21ba 100644
--- a/test/unit/browser/renderer.html
+++ b/test/unit/browser/renderer.html
@@ -53,7 +53,8 @@
 			paths: {
 				vs: new URL(`../../../${!!isBuild ? 'out-build' : 'out'}/vs`, baseUrl).href,
 				assert: new URL('../assert.js', baseUrl).href,
-				sinon: new URL('../../../node_modules/sinon/pkg/sinon-1.17.7.js', baseUrl).href,
+				sinon: new URL('../../../node_modules/sinon/pkg/sinon.js', baseUrl).href,
+				'sinon-test': new URL('../../../node_modules/sinon-test/dist/sinon-test.js', baseUrl).href,
 				xterm: new URL('../../../node_modules/xterm/lib/xterm.js', baseUrl).href,
 				'iconv-lite-umd': new URL('../../../node_modules/iconv-lite-umd/lib/iconv-lite-umd.js', baseUrl).href,
 				jschardet: new URL('../../../node_modules/jschardet/dist/jschardet.min.js', baseUrl).href
diff --git a/test/unit/node/index.html b/test/unit/node/index.html
index 55f9bb0f708..b0b65c6b2c8 100644
--- a/test/unit/node/index.html
+++ b/test/unit/node/index.html
@@ -17,7 +17,8 @@
 			baseUrl: '/out',
 			paths: {
 				assert: '/test/unit/assert.js',
-				sinon: '/node_modules/sinon/pkg/sinon-1.17.7.js'
+				sinon: '/node_modules/sinon/pkg/sinon.js',
+				'sinon-test': '/node_modules/sinon-test/dist/sinon-test.js'
 			}
 		});