diff --git a/2-resources/_External-learning-resources/01-Typescript/Learning-Typescript-2/Chapter02/modern-workflow-demo-master/package.json b/2-resources/_External-learning-resources/01-Typescript/Learning-Typescript-2/Chapter02/modern-workflow-demo-master/package.json
index 100280f3b..53adfce0b 100644
--- a/2-resources/_External-learning-resources/01-Typescript/Learning-Typescript-2/Chapter02/modern-workflow-demo-master/package.json
+++ b/2-resources/_External-learning-resources/01-Typescript/Learning-Typescript-2/Chapter02/modern-workflow-demo-master/package.json
@@ -28,7 +28,7 @@
   "engines": {},
   "dependencies": {
     "bluebird": "^2.9.14",
-    "handlebars": "^3.0.0",
+    "handlebars": "^4.7.7",
     "lodash": "^3.5.0"
   },
   "devDependencies": {
diff --git a/2-resources/_External-learning-resources/01-Typescript/Learning-Typescript-2/Chapter09/TsStock/package.json b/2-resources/_External-learning-resources/01-Typescript/Learning-Typescript-2/Chapter09/TsStock/package.json
index 7fa2ac47c..5849446fa 100644
--- a/2-resources/_External-learning-resources/01-Typescript/Learning-Typescript-2/Chapter09/TsStock/package.json
+++ b/2-resources/_External-learning-resources/01-Typescript/Learning-Typescript-2/Chapter09/TsStock/package.json
@@ -23,7 +23,7 @@
     "animate.css": "^3.4.0",
     "bootstrap": "^3.3.5",
     "datatables": "^1.10.8",
-    "handlebars": "^3.0.3",
+    "handlebars": "^4.7.7",
     "highcharts": "0.0.9",
     "jquery": "^2.1.4",
     "q": "^1.4.1"
diff --git a/2-resources/_External-learning-resources/01-Typescript/Learning-Typescript-2/Chapter10/TsStock/package.json b/2-resources/_External-learning-resources/01-Typescript/Learning-Typescript-2/Chapter10/TsStock/package.json
index 7fa2ac47c..5849446fa 100644
--- a/2-resources/_External-learning-resources/01-Typescript/Learning-Typescript-2/Chapter10/TsStock/package.json
+++ b/2-resources/_External-learning-resources/01-Typescript/Learning-Typescript-2/Chapter10/TsStock/package.json
@@ -23,7 +23,7 @@
     "animate.css": "^3.4.0",
     "bootstrap": "^3.3.5",
     "datatables": "^1.10.8",
-    "handlebars": "^3.0.3",
+    "handlebars": "^4.7.7",
     "highcharts": "0.0.9",
     "jquery": "^2.1.4",
     "q": "^1.4.1"