diff --git a/demos/angular/ecommerce/package.json b/demos/angular/ecommerce/package.json
index d129097f..ab3bfa81 100644
--- a/demos/angular/ecommerce/package.json
+++ b/demos/angular/ecommerce/package.json
@@ -44,6 +44,6 @@
     "protractor": "5.4.2",
     "ts-node": "5.0.1",
     "tslint": "5.12.1",
-    "typescript": "2.7.2"
+    "typescript": "3.4.5"
   }
 }
diff --git a/demos/angular/ecommerce/yarn.lock b/demos/angular/ecommerce/yarn.lock
index 7b9aad51..fc8f0987 100644
--- a/demos/angular/ecommerce/yarn.lock
+++ b/demos/angular/ecommerce/yarn.lock
@@ -6629,14 +6629,14 @@ typedarray@^0.0.6:
   version "0.0.6"
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
 
-typescript@2.7.2:
-  version "2.7.2"
-  resolved "http://registry.npmjs.org/typescript/-/typescript-2.7.2.tgz#2d615a1ef4aee4f574425cdff7026edf81919836"
-
 typescript@3.2.2:
   version "3.2.2"
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.2.2.tgz#fe8101c46aa123f8353523ebdcf5730c2ae493e5"
 
+typescript@3.4.5:
+  version "3.4.5"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.4.5.tgz#2d2618d10bb566572b8d7aad5180d84257d70a99"
+
 "typescript@>=2.6.2 <2.10":
   version "2.9.2"
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.9.2.tgz#1cbf61d05d6b96269244eb6a3bce4bd914e0f00c"
diff --git a/demos/angular/geo/package.json b/demos/angular/geo/package.json
index 8bda55b7..ca871d7e 100644
--- a/demos/angular/geo/package.json
+++ b/demos/angular/geo/package.json
@@ -45,6 +45,6 @@
     "protractor": "5.4.2",
     "ts-node": "5.0.1",
     "tslint": "5.12.1",
-    "typescript": "2.7.2"
+    "typescript": "3.4.5"
   }
 }
diff --git a/demos/angular/geo/yarn.lock b/demos/angular/geo/yarn.lock
index 6ccc06bc..e08e6702 100644
--- a/demos/angular/geo/yarn.lock
+++ b/demos/angular/geo/yarn.lock
@@ -6633,14 +6633,14 @@ typedarray@^0.0.6:
   version "0.0.6"
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
 
-typescript@2.7.2:
-  version "2.7.2"
-  resolved "http://registry.npmjs.org/typescript/-/typescript-2.7.2.tgz#2d615a1ef4aee4f574425cdff7026edf81919836"
-
 typescript@3.2.2:
   version "3.2.2"
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.2.2.tgz#fe8101c46aa123f8353523ebdcf5730c2ae493e5"
 
+typescript@3.4.5:
+  version "3.4.5"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.4.5.tgz#2d2618d10bb566572b8d7aad5180d84257d70a99"
+
 "typescript@>=2.6.2 <2.10":
   version "2.9.2"
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.9.2.tgz#1cbf61d05d6b96269244eb6a3bce4bd914e0f00c"
diff --git a/demos/angular/media/package.json b/demos/angular/media/package.json
index a20334c1..6822179b 100644
--- a/demos/angular/media/package.json
+++ b/demos/angular/media/package.json
@@ -44,6 +44,6 @@
     "protractor": "5.4.2",
     "ts-node": "5.0.1",
     "tslint": "5.12.1",
-    "typescript": "2.7.2"
+    "typescript": "3.4.5"
   }
 }
diff --git a/demos/angular/media/yarn.lock b/demos/angular/media/yarn.lock
index 7b9aad51..fc8f0987 100644
--- a/demos/angular/media/yarn.lock
+++ b/demos/angular/media/yarn.lock
@@ -6629,14 +6629,14 @@ typedarray@^0.0.6:
   version "0.0.6"
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
 
-typescript@2.7.2:
-  version "2.7.2"
-  resolved "http://registry.npmjs.org/typescript/-/typescript-2.7.2.tgz#2d615a1ef4aee4f574425cdff7026edf81919836"
-
 typescript@3.2.2:
   version "3.2.2"
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.2.2.tgz#fe8101c46aa123f8353523ebdcf5730c2ae493e5"
 
+typescript@3.4.5:
+  version "3.4.5"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.4.5.tgz#2d2618d10bb566572b8d7aad5180d84257d70a99"
+
 "typescript@>=2.6.2 <2.10":
   version "2.9.2"
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.9.2.tgz#1cbf61d05d6b96269244eb6a3bce4bd914e0f00c"
diff --git a/demos/angular/saas/package.json b/demos/angular/saas/package.json
index b7ed885e..181be183 100644
--- a/demos/angular/saas/package.json
+++ b/demos/angular/saas/package.json
@@ -44,6 +44,6 @@
     "protractor": "5.4.2",
     "ts-node": "5.0.1",
     "tslint": "5.12.1",
-    "typescript": "2.7.2"
+    "typescript": "3.4.5"
   }
 }
diff --git a/demos/angular/saas/yarn.lock b/demos/angular/saas/yarn.lock
index 7b9aad51..fc8f0987 100644
--- a/demos/angular/saas/yarn.lock
+++ b/demos/angular/saas/yarn.lock
@@ -6629,14 +6629,14 @@ typedarray@^0.0.6:
   version "0.0.6"
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
 
-typescript@2.7.2:
-  version "2.7.2"
-  resolved "http://registry.npmjs.org/typescript/-/typescript-2.7.2.tgz#2d615a1ef4aee4f574425cdff7026edf81919836"
-
 typescript@3.2.2:
   version "3.2.2"
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.2.2.tgz#fe8101c46aa123f8353523ebdcf5730c2ae493e5"
 
+typescript@3.4.5:
+  version "3.4.5"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.4.5.tgz#2d2618d10bb566572b8d7aad5180d84257d70a99"
+
 "typescript@>=2.6.2 <2.10":
   version "2.9.2"
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.9.2.tgz#1cbf61d05d6b96269244eb6a3bce4bd914e0f00c"