diff --git a/package.json b/package.json
index 8df11c29004..a233ac7beaf 100644
--- a/package.json
+++ b/package.json
@@ -66,14 +66,14 @@
     "resolve": "^1.6.0"
   },
   "devDependencies": {
-    "@glimmer/compiler": "^0.35.8",
+    "@glimmer/compiler": "^0.35.9",
     "@glimmer/env": "^0.1.7",
-    "@glimmer/interfaces": "^0.35.8",
-    "@glimmer/node": "^0.35.8",
-    "@glimmer/opcode-compiler": "^0.35.8",
-    "@glimmer/program": "^0.35.8",
-    "@glimmer/reference": "^0.35.8",
-    "@glimmer/runtime": "^0.35.8",
+    "@glimmer/interfaces": "^0.35.9",
+    "@glimmer/node": "^0.35.9",
+    "@glimmer/opcode-compiler": "^0.35.9",
+    "@glimmer/program": "^0.35.9",
+    "@glimmer/reference": "^0.35.9",
+    "@glimmer/runtime": "^0.35.9",
     "@types/qunit": "^2.5.0",
     "@types/rsvp": "^4.0.1",
     "amd-name-resolver": "^1.2.0",
diff --git a/packages/ember-glimmer/tests/integration/content-test.js b/packages/ember-glimmer/tests/integration/content-test.js
index 1c92a6bb3a1..8fcc6d6ae4e 100644
--- a/packages/ember-glimmer/tests/integration/content-test.js
+++ b/packages/ember-glimmer/tests/integration/content-test.js
@@ -712,7 +712,7 @@ moduleFor(
 
       this.runTask(() => set(this.context, 'value', htmlSafe('')));
 
-      this.assertHTML('before  after');
+      this.assertHTML('before <!----> after');
 
       this.runTask(() => set(this.context, 'value', htmlSafe('hello')));
 
@@ -848,7 +848,7 @@ moduleFor(
 
       this.runTask(() => set(this.context, 'value', undefined));
 
-      this.assertContent('before  after');
+      this.assertContent('before <!----> after');
 
       this.runTask(() => set(this.context, 'value', 'hello'));
 
@@ -856,7 +856,7 @@ moduleFor(
 
       this.runTask(() => set(this.context, 'value', null));
 
-      this.assertContent('before  after');
+      this.assertContent('before <!----> after');
 
       this.runTask(() => set(this.context, 'value', 'hello'));
 
@@ -864,7 +864,7 @@ moduleFor(
 
       this.runTask(() => set(this.context, 'value', ''));
 
-      this.assertContent('before  after');
+      this.assertContent('before <!----> after');
 
       this.runTask(() => set(this.context, 'value', 'hello'));
 
@@ -872,7 +872,7 @@ moduleFor(
 
       this.runTask(() => set(this.context, 'value', htmlSafe('')));
 
-      this.assertContent('before  after');
+      this.assertContent('before <!----> after');
 
       this.runTask(() => set(this.context, 'value', 'hello'));
 
diff --git a/yarn.lock b/yarn.lock
index 0828f545e22..c941b8957d4 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2,105 +2,105 @@
 # yarn lockfile v1
 
 
-"@glimmer/compiler@^0.35.8":
-  version "0.35.8"
-  resolved "https://registry.yarnpkg.com/@glimmer/compiler/-/compiler-0.35.8.tgz#1096f8d1abfbe2101c454bce476a6e829a3776a9"
+"@glimmer/compiler@^0.35.9":
+  version "0.35.9"
+  resolved "https://registry.yarnpkg.com/@glimmer/compiler/-/compiler-0.35.9.tgz#3342f6249826258e1428e0566b21f64f878bce51"
   dependencies:
-    "@glimmer/interfaces" "^0.35.8"
-    "@glimmer/syntax" "^0.35.8"
-    "@glimmer/util" "^0.35.8"
-    "@glimmer/wire-format" "^0.35.8"
+    "@glimmer/interfaces" "^0.35.9"
+    "@glimmer/syntax" "^0.35.9"
+    "@glimmer/util" "^0.35.9"
+    "@glimmer/wire-format" "^0.35.9"
 
-"@glimmer/encoder@^0.35.8":
-  version "0.35.8"
-  resolved "https://registry.yarnpkg.com/@glimmer/encoder/-/encoder-0.35.8.tgz#ce57a9d60e49e2faef987c6cb22c31fb78bb0a48"
+"@glimmer/encoder@^0.35.9":
+  version "0.35.9"
+  resolved "https://registry.yarnpkg.com/@glimmer/encoder/-/encoder-0.35.9.tgz#4aff747cc62c334eba7ed8918ed86c70b2d4f606"
 
 "@glimmer/env@^0.1.7":
   version "0.1.7"
   resolved "https://registry.yarnpkg.com/@glimmer/env/-/env-0.1.7.tgz#fd2d2b55a9029c6b37a6c935e8c8871ae70dfa07"
 
-"@glimmer/interfaces@^0.35.8":
-  version "0.35.8"
-  resolved "https://registry.yarnpkg.com/@glimmer/interfaces/-/interfaces-0.35.8.tgz#bd82fcb0a77959b17d5adeaf561fea9dfb3b9a9a"
+"@glimmer/interfaces@^0.35.9":
+  version "0.35.9"
+  resolved "https://registry.yarnpkg.com/@glimmer/interfaces/-/interfaces-0.35.9.tgz#26b4fa0f2acfcab3b4309826068292a9e7a006df"
   dependencies:
-    "@glimmer/wire-format" "^0.35.8"
+    "@glimmer/wire-format" "^0.35.9"
 
-"@glimmer/low-level@^0.35.8":
-  version "0.35.8"
-  resolved "https://registry.yarnpkg.com/@glimmer/low-level/-/low-level-0.35.8.tgz#0c16ed531a8d14b57a86862768f10072de876dfe"
+"@glimmer/low-level@^0.35.9":
+  version "0.35.9"
+  resolved "https://registry.yarnpkg.com/@glimmer/low-level/-/low-level-0.35.9.tgz#9d2e755d39cbdc4161f0110ee55ba59d9245d342"
 
-"@glimmer/node@^0.35.8":
-  version "0.35.8"
-  resolved "https://registry.yarnpkg.com/@glimmer/node/-/node-0.35.8.tgz#7ab3fbc114cf1a7b3d0c60db936c80c8b60c0af3"
+"@glimmer/node@^0.35.9":
+  version "0.35.9"
+  resolved "https://registry.yarnpkg.com/@glimmer/node/-/node-0.35.9.tgz#1a9cb7333eacd007bc1882b3d5d20e0e575864a5"
   dependencies:
-    "@glimmer/interfaces" "^0.35.8"
-    "@glimmer/runtime" "^0.35.8"
+    "@glimmer/interfaces" "^0.35.9"
+    "@glimmer/runtime" "^0.35.9"
     simple-dom "^0.3.0"
 
-"@glimmer/opcode-compiler@^0.35.8":
-  version "0.35.8"
-  resolved "https://registry.yarnpkg.com/@glimmer/opcode-compiler/-/opcode-compiler-0.35.8.tgz#85728a11d33d66c5cc06b8a4cb8a61771e6dc1db"
-  dependencies:
-    "@glimmer/encoder" "^0.35.8"
-    "@glimmer/interfaces" "^0.35.8"
-    "@glimmer/program" "^0.35.8"
-    "@glimmer/reference" "^0.35.8"
-    "@glimmer/util" "^0.35.8"
-    "@glimmer/vm" "^0.35.8"
-    "@glimmer/wire-format" "^0.35.8"
-
-"@glimmer/program@^0.35.8":
-  version "0.35.8"
-  resolved "https://registry.yarnpkg.com/@glimmer/program/-/program-0.35.8.tgz#3dbf9b85a9c1b12fdaaf9fc2036c280e16df395f"
-  dependencies:
-    "@glimmer/encoder" "^0.35.8"
-    "@glimmer/interfaces" "^0.35.8"
-    "@glimmer/util" "^0.35.8"
-
-"@glimmer/reference@^0.35.8":
-  version "0.35.8"
-  resolved "https://registry.yarnpkg.com/@glimmer/reference/-/reference-0.35.8.tgz#95283835698bc7ee5fef6208b9dc66c2bbad8a71"
-  dependencies:
-    "@glimmer/util" "^0.35.8"
-
-"@glimmer/runtime@^0.35.8":
-  version "0.35.8"
-  resolved "https://registry.yarnpkg.com/@glimmer/runtime/-/runtime-0.35.8.tgz#4aaabe3682b01c77f47b95768b74d70d9e64d2a6"
-  dependencies:
-    "@glimmer/interfaces" "^0.35.8"
-    "@glimmer/low-level" "^0.35.8"
-    "@glimmer/program" "^0.35.8"
-    "@glimmer/reference" "^0.35.8"
-    "@glimmer/util" "^0.35.8"
-    "@glimmer/vm" "^0.35.8"
-    "@glimmer/wire-format" "^0.35.8"
-
-"@glimmer/syntax@^0.35.8":
-  version "0.35.8"
-  resolved "https://registry.yarnpkg.com/@glimmer/syntax/-/syntax-0.35.8.tgz#52fa3075514851f5ffc2ea629d35716c9eebb7f2"
-  dependencies:
-    "@glimmer/interfaces" "^0.35.8"
-    "@glimmer/util" "^0.35.8"
+"@glimmer/opcode-compiler@^0.35.9":
+  version "0.35.9"
+  resolved "https://registry.yarnpkg.com/@glimmer/opcode-compiler/-/opcode-compiler-0.35.9.tgz#402c8618fc3c84650be8d91d25ab0b25da0177af"
+  dependencies:
+    "@glimmer/encoder" "^0.35.9"
+    "@glimmer/interfaces" "^0.35.9"
+    "@glimmer/program" "^0.35.9"
+    "@glimmer/reference" "^0.35.9"
+    "@glimmer/util" "^0.35.9"
+    "@glimmer/vm" "^0.35.9"
+    "@glimmer/wire-format" "^0.35.9"
+
+"@glimmer/program@^0.35.9":
+  version "0.35.9"
+  resolved "https://registry.yarnpkg.com/@glimmer/program/-/program-0.35.9.tgz#57ceda2c5f7b4df64f417880724afa3d321eecde"
+  dependencies:
+    "@glimmer/encoder" "^0.35.9"
+    "@glimmer/interfaces" "^0.35.9"
+    "@glimmer/util" "^0.35.9"
+
+"@glimmer/reference@^0.35.9":
+  version "0.35.9"
+  resolved "https://registry.yarnpkg.com/@glimmer/reference/-/reference-0.35.9.tgz#10e2ca42ef1b92ad195ce4d6b305bf256325fbb6"
+  dependencies:
+    "@glimmer/util" "^0.35.9"
+
+"@glimmer/runtime@^0.35.9":
+  version "0.35.9"
+  resolved "https://registry.yarnpkg.com/@glimmer/runtime/-/runtime-0.35.9.tgz#d2358046e9d13c983180ff79734ac5d0d39fe310"
+  dependencies:
+    "@glimmer/interfaces" "^0.35.9"
+    "@glimmer/low-level" "^0.35.9"
+    "@glimmer/program" "^0.35.9"
+    "@glimmer/reference" "^0.35.9"
+    "@glimmer/util" "^0.35.9"
+    "@glimmer/vm" "^0.35.9"
+    "@glimmer/wire-format" "^0.35.9"
+
+"@glimmer/syntax@^0.35.9":
+  version "0.35.9"
+  resolved "https://registry.yarnpkg.com/@glimmer/syntax/-/syntax-0.35.9.tgz#9710e3418d60436ce368acb4d3e9c7802defa6ca"
+  dependencies:
+    "@glimmer/interfaces" "^0.35.9"
+    "@glimmer/util" "^0.35.9"
     handlebars "^4.0.6"
     simple-html-tokenizer "^0.5.5"
 
-"@glimmer/util@^0.35.8":
-  version "0.35.8"
-  resolved "https://registry.yarnpkg.com/@glimmer/util/-/util-0.35.8.tgz#ec2d7aa4897b77ba96275bb2ea803c6c6dcf0eef"
+"@glimmer/util@^0.35.9":
+  version "0.35.9"
+  resolved "https://registry.yarnpkg.com/@glimmer/util/-/util-0.35.9.tgz#59e8bbfb2bb7a764d0098be49d083c200d113a61"
 
-"@glimmer/vm@^0.35.8":
-  version "0.35.8"
-  resolved "https://registry.yarnpkg.com/@glimmer/vm/-/vm-0.35.8.tgz#2db9a0f7cb94340640253da339f91b09546179c3"
+"@glimmer/vm@^0.35.9":
+  version "0.35.9"
+  resolved "https://registry.yarnpkg.com/@glimmer/vm/-/vm-0.35.9.tgz#8c54c675a625384f7ff0539b47841d877acf6b9f"
   dependencies:
-    "@glimmer/interfaces" "^0.35.8"
-    "@glimmer/program" "^0.35.8"
-    "@glimmer/util" "^0.35.8"
+    "@glimmer/interfaces" "^0.35.9"
+    "@glimmer/program" "^0.35.9"
+    "@glimmer/util" "^0.35.9"
 
-"@glimmer/wire-format@^0.35.8":
-  version "0.35.8"
-  resolved "https://registry.yarnpkg.com/@glimmer/wire-format/-/wire-format-0.35.8.tgz#61f58bce456f7c9aca0d338c31b91aa74b911911"
+"@glimmer/wire-format@^0.35.9":
+  version "0.35.9"
+  resolved "https://registry.yarnpkg.com/@glimmer/wire-format/-/wire-format-0.35.9.tgz#96f0c302583da3311303458ae9634b7fc72db9f4"
   dependencies:
-    "@glimmer/util" "^0.35.8"
+    "@glimmer/util" "^0.35.9"
 
 "@types/acorn@^4.0.3":
   version "4.0.3"