diff --git a/package.json b/package.json
index 17539fe9f..7bfe92833 100644
--- a/package.json
+++ b/package.json
@@ -23,7 +23,7 @@
     "@angular/compiler": "11.2.14",
     "@babel/code-frame": "7.12.13",
     "@babel/parser": "7.14.3",
-    "@glimmer/syntax": "0.79.2",
+    "@glimmer/syntax": "0.79.3",
     "@iarna/toml": "2.2.5",
     "@typescript-eslint/typescript-estree": "4.25.0",
     "angular-estree-parser": "2.3.0",
diff --git a/yarn.lock b/yarn.lock
index d6254a968..658586049 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1150,6 +1150,13 @@
   dependencies:
     "@simple-dom/interface" "^1.4.0"
 
+"@glimmer/interfaces@0.79.3":
+  version "0.79.3"
+  resolved "https://registry.yarnpkg.com/@glimmer/interfaces/-/interfaces-0.79.3.tgz#4e0a3ff9cf0b60bdab1a4d420f641ab540d4fc85"
+  integrity sha512-EFiNKwehbxm1xRsfnNu/5nu8Rw+0IYINL/Hciwl/28T8an7FOxftpy/iXXSaWvIsnPyBHqH1ufwsKYY6KXyNzg==
+  dependencies:
+    "@simple-dom/interface" "^1.4.0"
+
 "@glimmer/reference@0.79.2":
   version "0.79.2"
   resolved "https://registry.yarnpkg.com/@glimmer/reference/-/reference-0.79.2.tgz#070c16268dc22341aa6ffd30b6dee88cd9cf63d4"
@@ -1161,13 +1168,13 @@
     "@glimmer/util" "0.79.2"
     "@glimmer/validator" "0.79.2"
 
-"@glimmer/syntax@0.79.2":
-  version "0.79.2"
-  resolved "https://registry.yarnpkg.com/@glimmer/syntax/-/syntax-0.79.2.tgz#fcd6e742860ca39230043969fb04644d5cc6a5c9"
-  integrity sha512-65ZXxIM38EMKESWgvTU31ouZiQAELRO/LmOfzTJZlYH5LhSAZWSQ7tatYXDrcjPoiDojLO0a16WccZggM1etmg==
+"@glimmer/syntax@0.79.3":
+  version "0.79.3"
+  resolved "https://registry.yarnpkg.com/@glimmer/syntax/-/syntax-0.79.3.tgz#5beadd53494d0f199b83f016af90fa28c3ecaa8c"
+  integrity sha512-IERTn/mqRk0pZnddAnYjGUV4e93rRf5scY0dYQl2EFvBHFaOdFQPe3fhSCozx0hZpagg5LCOsbRgsMwL9IT9fw==
   dependencies:
-    "@glimmer/interfaces" "0.79.2"
-    "@glimmer/util" "0.79.2"
+    "@glimmer/interfaces" "0.79.3"
+    "@glimmer/util" "0.79.3"
     "@handlebars/parser" "~2.0.0"
     simple-html-tokenizer "^0.5.10"
 
@@ -1180,6 +1187,15 @@
     "@glimmer/interfaces" "0.79.2"
     "@simple-dom/interface" "^1.4.0"
 
+"@glimmer/util@0.79.3":
+  version "0.79.3"
+  resolved "https://registry.yarnpkg.com/@glimmer/util/-/util-0.79.3.tgz#a54f0383d8e83ca43625e289fe1df6c72ccfb938"
+  integrity sha512-SVHHA6blGzIM6ZMJErqvzqsapYEsN5hXyobJl+lQAAzBKvaExc7VHQfs10267HxA9WlMNLuu83+tYOu+UR67hA==
+  dependencies:
+    "@glimmer/env" "0.1.7"
+    "@glimmer/interfaces" "0.79.3"
+    "@simple-dom/interface" "^1.4.0"
+
 "@glimmer/validator@0.79.2":
   version "0.79.2"
   resolved "https://registry.yarnpkg.com/@glimmer/validator/-/validator-0.79.2.tgz#b132673925ce79842b4c4ef1ecbf170aa3c0daa7"