diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 076272c..65b91e4 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -97,7 +97,7 @@ importers:
       '@embroider/webpack': ^2.0.2
       '@glimmer/component': ^1.1.2
       '@glimmer/tracking': ^1.1.2
-      '@glimmer/validator': ^0.84.2
+      '@glimmer/validator': ^0.85.8
       '@gossi/config-eslint': ^0.3.0
       '@gossi/config-prettier': ^0.3.0
       '@gossi/config-stylelint': ^0.3.0
@@ -149,7 +149,7 @@ importers:
       '@embroider/webpack': 2.0.2_byxkwhtlh63xhimn5rdsj74uiq
       '@glimmer/component': 1.1.2_@babel+core@7.20.5
       '@glimmer/tracking': 1.1.2
-      '@glimmer/validator': 0.84.2
+      '@glimmer/validator': 0.85.8
       '@gossi/config-eslint': 0.3.0_ye6557rudq5q2ckq3vhhyxe6de
       '@gossi/config-prettier': 0.3.0_prettier@2.8.1
       '@gossi/config-stylelint': 0.3.0_stylelint@14.16.0
@@ -1800,10 +1800,8 @@ packages:
       '@glimmer/env': 0.1.7
     dev: true
 
-  /@glimmer/global-context/0.84.2:
-    resolution: {integrity: sha512-6FycLh/Eq0P3LA94bJL6WHPJyOTKeQD4KBWhowZ9TbeO3p4/WUr+POKPVEyfIx6YHybhpL9MGj45Y2r0hqVigw==}
-    dependencies:
-      '@glimmer/env': 0.1.7
+  /@glimmer/global-context/0.85.8:
+    resolution: {integrity: sha512-mevalc+uDjDvN5q/tFbHpYRuPmahkU2u3Cj9GD3sEvp0zp1oG/d8wLipR/3TVMQgnQ0q0NWeQlHl/HBpIRBlbg==}
     dev: true
 
   /@glimmer/interfaces/0.83.1:
@@ -1818,6 +1816,12 @@ packages:
       '@simple-dom/interface': 1.4.0
     dev: true
 
+  /@glimmer/interfaces/0.85.8:
+    resolution: {integrity: sha512-Pzz05027itnvPTfjFQbXE7710bfOcPQIV8QLqvHk4+3iZZ+9C50xbv3NzbkUVkUKTkm+Acijc768bz4aVQkd9Q==}
+    dependencies:
+      '@simple-dom/interface': 1.4.0
+    dev: true
+
   /@glimmer/reference/0.83.1:
     resolution: {integrity: sha512-BThEwDlMkJB1WBPWDrww+VxgGyDbwxh5FFPvGhkovvCZnCb7fAMUCt9pi6CUZtviugkWOBFtE9P4eZZbOLkXeg==}
     dependencies:
@@ -1873,6 +1877,13 @@ packages:
       '@simple-dom/interface': 1.4.0
     dev: true
 
+  /@glimmer/util/0.85.8:
+    resolution: {integrity: sha512-DUSJwb+2BeAXPtQFM4/mQ+gCZCHu1TDKvYcR2cIip0fNdPTaaPuYnCU4nqazXVvqGDHAC1m/Mjv0xzGL4vsB+w==}
+    dependencies:
+      '@glimmer/env': 0.1.7
+      '@glimmer/interfaces': 0.85.8
+    dev: true
+
   /@glimmer/validator/0.44.0:
     resolution: {integrity: sha512-i01plR0EgFVz69GDrEuFgq1NheIjZcyTy3c7q+w7d096ddPVeVcRzU3LKaqCfovvLJ+6lJx40j45ecycASUUyw==}
     dev: true
@@ -1884,11 +1895,13 @@ packages:
       '@glimmer/global-context': 0.83.1
     dev: true
 
-  /@glimmer/validator/0.84.2:
-    resolution: {integrity: sha512-9tpSmwiktsJDqriNEiFfyP+9prMSdk08THA6Ik71xS/sudBKxoDpul678uvyEYST/+Z23F8MxwKccC+QxCMXNA==}
+  /@glimmer/validator/0.85.8:
+    resolution: {integrity: sha512-m3KhgSJNYoD5vUmmU0rRI/YHMoFOqHMEwSMt8lEUxa/gSqYJVwcD3mIQFnIuJ0NyroOPytIZdFYMef7XqQC54A==}
     dependencies:
       '@glimmer/env': 0.1.7
-      '@glimmer/global-context': 0.84.2
+      '@glimmer/global-context': 0.85.8
+      '@glimmer/interfaces': 0.85.8
+      '@glimmer/util': 0.85.8
     dev: true
 
   /@glimmer/vm-babel-plugins/0.84.2_@babel+core@7.20.5:
diff --git a/testing/test-app/package.json b/testing/test-app/package.json
index ad48af7..20f7e17 100644
--- a/testing/test-app/package.json
+++ b/testing/test-app/package.json
@@ -30,7 +30,7 @@
     "@embroider/webpack": "^2.0.2",
     "@glimmer/component": "^1.1.2",
     "@glimmer/tracking": "^1.1.2",
-    "@glimmer/validator": "^0.84.2",
+    "@glimmer/validator": "^0.85.8",
     "@gossi/config-eslint": "^0.3.0",
     "@gossi/config-prettier": "^0.3.0",
     "@gossi/config-stylelint": "^0.3.0",