diff --git a/ember-power-datepicker/package.json b/ember-power-datepicker/package.json
index b06c474..85a5781 100644
--- a/ember-power-datepicker/package.json
+++ b/ember-power-datepicker/package.json
@@ -60,7 +60,7 @@
     "@embroider/addon-dev": "^4.2.1",
     "@glimmer/component": "^1.1.2",
     "@glimmer/tracking": "^1.1.2",
-    "@glint/core": "^1.3.0",
+    "@glint/core": "^1.4.0",
     "@glint/environment-ember-loose": "^1.3.0",
     "@glint/environment-ember-template-imports": "^1.4.0",
     "@glint/template": "^1.4.0",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index a4f5b9e..b4aa917 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -67,8 +67,8 @@ importers:
         specifier: ^1.1.2
         version: 1.1.2
       '@glint/core':
-        specifier: ^1.3.0
-        version: 1.3.0(typescript@5.4.3)
+        specifier: ^1.4.0
+        version: 1.4.0(typescript@5.4.3)
       '@glint/environment-ember-loose':
         specifier: ^1.3.0
         version: 1.3.0(@glimmer/component@1.1.2)(@glint/template@1.4.0)(@types/ember__array@4.0.10)(@types/ember__component@4.0.22)(@types/ember__controller@4.0.12)(@types/ember__object@4.0.12)(@types/ember__routing@4.0.22)(ember-cli-htmlbars@6.3.0)(ember-modifier@4.1.0)
@@ -263,8 +263,8 @@ importers:
         specifier: ^1.1.2
         version: 1.1.2
       '@glint/core':
-        specifier: ^1.3.0
-        version: 1.3.0(typescript@5.4.3)
+        specifier: ^1.4.0
+        version: 1.4.0(typescript@5.4.3)
       '@glint/environment-ember-loose':
         specifier: ^1.3.0
         version: 1.3.0(@glimmer/component@1.1.2)(@glint/template@1.4.0)(@types/ember__array@4.0.10)(@types/ember__component@4.0.22)(@types/ember__controller@4.0.12)(@types/ember__object@4.0.12)(@types/ember__routing@4.0.22)(ember-cli-htmlbars@6.3.0)(ember-modifier@4.1.0)
@@ -2588,8 +2588,8 @@ packages:
       '@glimmer/util': 0.89.0
     dev: true
 
-  /@glint/core@1.3.0(typescript@5.4.3):
-    resolution: {integrity: sha512-R5Y1QmkZs6lJHQ0LTRRcTKDI1EdeM32YuR2J67LG4qKT+WUNZhmetkqPiAMW9hQAOdrG/PqDZWV+J7Jf3xOlAg==}
+  /@glint/core@1.4.0(typescript@5.4.3):
+    resolution: {integrity: sha512-nq27a/1R6kc3lsuciz8z9IZO1NQCbNkEBxf5KJI7AUrnps6RzQzmq3pmwO24zQYmFcH4sqpod8fleNIpg8YEqg==}
     hasBin: true
     peerDependencies:
       typescript: '>=4.8.0'
diff --git a/test-app/package.json b/test-app/package.json
index ee2e45e..5e05439 100644
--- a/test-app/package.json
+++ b/test-app/package.json
@@ -35,7 +35,7 @@
     "@embroider/test-setup": "^3.0.3",
     "@glimmer/component": "^1.1.2",
     "@glimmer/tracking": "^1.1.2",
-    "@glint/core": "^1.3.0",
+    "@glint/core": "^1.4.0",
     "@glint/environment-ember-loose": "^1.3.0",
     "@glint/environment-ember-template-imports": "^1.4.0",
     "@glint/template": "^1.4.0",