diff --git a/apps/demos/package.json b/apps/demos/package.json
index e5e74c8c874e..75c0ef670b06 100644
--- a/apps/demos/package.json
+++ b/apps/demos/package.json
@@ -19,7 +19,7 @@
         "@angular-devkit/build-angular": "~21.0.0",
         "@angular/cli": "~21.0.0",
         "@angular/common": "~21.0.0",
-        "@angular/compiler": "~21.0.0",
+        "@angular/compiler": "~19.2.18",
         "@angular/compiler-cli": "~21.0.0",
         "@angular/core": "~21.0.7",
         "@angular/forms": "~21.0.0",