diff --git a/demos/angular/ecommerce/package.json b/demos/angular/ecommerce/package.json
index f8587fe2..11ec00bc 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": "4.9.5"
   }
 }
diff --git a/demos/angular/ecommerce/yarn.lock b/demos/angular/ecommerce/yarn.lock
index 0fe1bc64..2f217d17 100644
--- a/demos/angular/ecommerce/yarn.lock
+++ b/demos/angular/ecommerce/yarn.lock
@@ -6665,14 +6665,15 @@ 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@4.9.5:
+  version "4.9.5"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.9.5.tgz#095979f9bcc0d09da324d58d03ce8f8374cbe65a"
+  integrity sha512-1FXk9E2Hm+QzZQ7z+McJiHL4NW1F2EzMu9Nq9i3zAaGqibafqYwCVU6WyWAuyQRRzOlxou8xZSyXLEN8oKj24g==
+
 "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 79411f01..81fe7a5b 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": "4.9.5"
   }
 }
diff --git a/demos/angular/geo/yarn.lock b/demos/angular/geo/yarn.lock
index 8f2a57a8..bbae257d 100644
--- a/demos/angular/geo/yarn.lock
+++ b/demos/angular/geo/yarn.lock
@@ -6669,14 +6669,15 @@ 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@4.9.5:
+  version "4.9.5"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.9.5.tgz#095979f9bcc0d09da324d58d03ce8f8374cbe65a"
+  integrity sha512-1FXk9E2Hm+QzZQ7z+McJiHL4NW1F2EzMu9Nq9i3zAaGqibafqYwCVU6WyWAuyQRRzOlxou8xZSyXLEN8oKj24g==
+
 "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 5d02831e..0882162a 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": "4.9.5"
   }
 }
diff --git a/demos/angular/media/yarn.lock b/demos/angular/media/yarn.lock
index 0fe1bc64..2f217d17 100644
--- a/demos/angular/media/yarn.lock
+++ b/demos/angular/media/yarn.lock
@@ -6665,14 +6665,15 @@ 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@4.9.5:
+  version "4.9.5"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.9.5.tgz#095979f9bcc0d09da324d58d03ce8f8374cbe65a"
+  integrity sha512-1FXk9E2Hm+QzZQ7z+McJiHL4NW1F2EzMu9Nq9i3zAaGqibafqYwCVU6WyWAuyQRRzOlxou8xZSyXLEN8oKj24g==
+
 "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 3fd32007..3cf81a31 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": "4.9.5"
   }
 }
diff --git a/demos/angular/saas/yarn.lock b/demos/angular/saas/yarn.lock
index 0fe1bc64..2f217d17 100644
--- a/demos/angular/saas/yarn.lock
+++ b/demos/angular/saas/yarn.lock
@@ -6665,14 +6665,15 @@ 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@4.9.5:
+  version "4.9.5"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.9.5.tgz#095979f9bcc0d09da324d58d03ce8f8374cbe65a"
+  integrity sha512-1FXk9E2Hm+QzZQ7z+McJiHL4NW1F2EzMu9Nq9i3zAaGqibafqYwCVU6WyWAuyQRRzOlxou8xZSyXLEN8oKj24g==
+
 "typescript@>=2.6.2 <2.10":
   version "2.9.2"
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.9.2.tgz#1cbf61d05d6b96269244eb6a3bce4bd914e0f00c"