diff --git a/sample/01-basic/package.json b/sample/01-basic/package.json
index 084b6a78..b41a4bd4 100644
--- a/sample/01-basic/package.json
+++ b/sample/01-basic/package.json
@@ -28,7 +28,7 @@
     "nodemailer": "6.4.18",
     "reflect-metadata": "0.1.13",
     "rimraf": "3.0.2",
-    "rxjs": "6.6.3"
+    "rxjs": "6.6.6"
   },
   "devDependencies": {
     "@nestjs/cli": "7.5.4",
diff --git a/sample/02-custom-template-adapter/package.json b/sample/02-custom-template-adapter/package.json
index 18c14687..36c0e3f5 100644
--- a/sample/02-custom-template-adapter/package.json
+++ b/sample/02-custom-template-adapter/package.json
@@ -28,7 +28,7 @@
     "nodemailer": "6.4.18",
     "reflect-metadata": "0.1.13",
     "rimraf": "3.0.2",
-    "rxjs": "6.6.3",
+    "rxjs": "6.6.6",
     "twing": "5.0.2"
   },
   "devDependencies": {