diff --git a/packages/rollup-plugin-glimmer-template-tag/package.json b/packages/rollup-plugin-glimmer-template-tag/package.json
index 09ae963..6072d40 100644
--- a/packages/rollup-plugin-glimmer-template-tag/package.json
+++ b/packages/rollup-plugin-glimmer-template-tag/package.json
@@ -50,7 +50,7 @@
     "eslint": "^8.36.0",
     "prettier": "^2.8.4",
     "rollup": "^3.19.1",
-    "typescript": "^4.9.5"
+    "typescript": "^5.0.0"
   },
   "peerDependencies": {
     "@babel/core": "^7.21.3",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 8c03582..54ee85b 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -36,10 +36,10 @@ importers:
         version: 18.15.3
       '@typescript-eslint/eslint-plugin':
         specifier: ^5.55.0
-        version: 5.55.0(@typescript-eslint/parser@5.55.0)(eslint@8.36.0)(typescript@4.9.5)
+        version: 5.55.0(@typescript-eslint/parser@5.55.0)(eslint@8.36.0)(typescript@5.0.2)
       '@typescript-eslint/parser':
         specifier: ^5.55.0
-        version: 5.55.0(eslint@8.36.0)(typescript@4.9.5)
+        version: 5.55.0(eslint@8.36.0)(typescript@5.0.2)
       concurrently:
         specifier: ^8.0.0
         version: 8.0.0
@@ -59,8 +59,8 @@ importers:
         specifier: ^3.19.1
         version: 3.19.1
       typescript:
-        specifier: ^4.9.5
-        version: 4.9.5
+        specifier: ^5.0.0
+        version: 5.0.2
 
   test-packages/test-app:
     dependencies:
@@ -103,7 +103,7 @@ importers:
         version: 1.1.2
       '@glint/core':
         specifier: ^1.0.0-beta.3
-        version: 1.0.0-beta.3(typescript@4.9.5)
+        version: 1.0.0-beta.3(typescript@5.0.2)
       '@glint/environment-ember-loose':
         specifier: ^1.0.0-beta.3
         version: 1.0.0-beta.3(@glimmer/component@1.1.2)(@glint/template@1.0.0-beta.3)(ember-cli-htmlbars@6.2.0)(ember-modifier@4.1.0)
@@ -127,10 +127,10 @@ importers:
         version: 4.0.4
       '@typescript-eslint/eslint-plugin':
         specifier: ^5.55.0
-        version: 5.55.0(@typescript-eslint/parser@5.55.0)(eslint@8.36.0)(typescript@4.9.5)
+        version: 5.55.0(@typescript-eslint/parser@5.55.0)(eslint@8.36.0)(typescript@5.0.2)
       '@typescript-eslint/parser':
         specifier: ^5.55.0
-        version: 5.55.0(eslint@8.36.0)(typescript@4.9.5)
+        version: 5.55.0(eslint@8.36.0)(typescript@5.0.2)
       broccoli-asset-rev:
         specifier: ^3.0.0
         version: 3.0.0
@@ -231,8 +231,8 @@ importers:
         specifier: ^3.1.1
         version: 3.1.1
       typescript:
-        specifier: ^4.9.5
-        version: 4.9.5
+        specifier: ^5.0.0
+        version: 5.0.2
       webpack:
         specifier: ^5.76.1
         version: 5.76.1
@@ -315,7 +315,7 @@ importers:
         version: 1.1.2(@babel/core@7.21.3)
       '@glint/core':
         specifier: ^1.0.0-beta.3
-        version: 1.0.0-beta.3(typescript@4.9.5)
+        version: 1.0.0-beta.3(typescript@5.0.2)
       '@glint/environment-ember-loose':
         specifier: ^1.0.0-beta.3
         version: 1.0.0-beta.3(@glimmer/component@1.1.2)(@glint/template@1.0.0-beta.3)(ember-cli-htmlbars@6.2.0)(ember-modifier@4.1.0)
@@ -360,10 +360,10 @@ importers:
         version: link:../../packages/rollup-plugin-glimmer-template-tag
       rollup-plugin-ts:
         specifier: ^3.2.0
-        version: 3.2.0(@babel/core@7.21.3)(@babel/preset-typescript@7.21.0)(@babel/runtime@7.21.0)(rollup@3.19.1)(typescript@4.9.5)
+        version: 3.2.0(@babel/core@7.21.3)(@babel/preset-typescript@7.21.0)(@babel/runtime@7.21.0)(rollup@3.19.1)(typescript@5.0.2)
       typescript:
-        specifier: ^4.9.5
-        version: 4.9.5
+        specifier: ^5.0.0
+        version: 5.0.2
 
   test-packages/test-rollup-addon-node-resolve:
     dependencies:
@@ -391,7 +391,7 @@ importers:
         version: 1.1.2(@babel/core@7.21.3)
       '@glint/core':
         specifier: ^1.0.0-beta.3
-        version: 1.0.0-beta.3(typescript@4.9.5)
+        version: 1.0.0-beta.3(typescript@5.0.2)
       '@glint/environment-ember-loose':
         specifier: ^1.0.0-beta.3
         version: 1.0.0-beta.3(@glimmer/component@1.1.2)(@glint/template@1.0.0-beta.3)(ember-cli-htmlbars@6.2.0)(ember-modifier@4.1.0)
@@ -426,8 +426,8 @@ importers:
         specifier: workspace:*
         version: link:../../packages/rollup-plugin-glimmer-template-tag
       typescript:
-        specifier: ^4.9.5
-        version: 4.9.5
+        specifier: ^5.0.0
+        version: 5.0.2
 
   test-packages/test-rollup-addon-split-gts:
     dependencies:
@@ -461,7 +461,7 @@ importers:
         version: 1.1.2(@babel/core@7.21.3)
       '@glint/core':
         specifier: ^1.0.0-beta.3
-        version: 1.0.0-beta.3(typescript@4.9.5)
+        version: 1.0.0-beta.3(typescript@5.0.2)
       '@glint/environment-ember-loose':
         specifier: ^1.0.0-beta.3
         version: 1.0.0-beta.3(@glimmer/component@1.1.2)(@glint/template@1.0.0-beta.3)(ember-cli-htmlbars@6.2.0)(ember-modifier@4.1.0)
@@ -506,10 +506,10 @@ importers:
         version: link:../../packages/rollup-plugin-glimmer-template-tag
       rollup-plugin-ts:
         specifier: ^3.2.0
-        version: 3.2.0(@babel/core@7.21.3)(@babel/preset-typescript@7.21.0)(@babel/runtime@7.21.0)(rollup@3.19.1)(typescript@4.9.5)
+        version: 3.2.0(@babel/core@7.21.3)(@babel/preset-typescript@7.21.0)(@babel/runtime@7.21.0)(rollup@3.19.1)(typescript@5.0.2)
       typescript:
-        specifier: ^4.9.5
-        version: 4.9.5
+        specifier: ^5.0.0
+        version: 5.0.2
 
   test-packages/test-v1-addon:
     dependencies:
@@ -3194,7 +3194,7 @@ packages:
       - '@babel/core'
     dev: true
 
-  /@glint/core@1.0.0-beta.3(typescript@4.9.5):
+  /@glint/core@1.0.0-beta.3(typescript@5.0.2):
     resolution: {integrity: sha512-4xpo6ugp/DmjyaK/kjo7cu1SLG9jaLqGslb80HXPI+9o7YadSRkHRL1Y0JxGhgTD0IJnB+EzBd8Pc9Oat/stqQ==}
     hasBin: true
     peerDependencies:
@@ -3204,7 +3204,7 @@ packages:
       escape-string-regexp: 4.0.0
       semver: 7.3.8
       silent-error: 1.1.1
-      typescript: 4.9.5
+      typescript: 5.0.2
       uuid: 8.3.2
       vscode-languageserver: 8.1.0
       vscode-languageserver-textdocument: 1.0.8
@@ -3515,8 +3515,8 @@ packages:
         optional: true
     dependencies:
       '@babel/core': 7.21.3(supports-color@8.1.1)
-      '@typescript-eslint/eslint-plugin': 5.55.0(@typescript-eslint/parser@5.55.0)(eslint@8.36.0)(typescript@4.9.5)
-      '@typescript-eslint/parser': 5.55.0(eslint@8.36.0)(typescript@4.9.5)
+      '@typescript-eslint/eslint-plugin': 5.55.0(@typescript-eslint/parser@5.55.0)(eslint@8.36.0)(typescript@5.0.2)
+      '@typescript-eslint/parser': 5.55.0(eslint@8.36.0)(typescript@5.0.2)
       cosmiconfig: 8.1.0
       eslint: 8.36.0
       eslint-import-resolver-typescript: 3.5.3(eslint-plugin-import@2.27.5)(eslint@8.36.0)
@@ -3609,8 +3609,8 @@ packages:
         optional: true
     dependencies:
       '@babel/eslint-parser': 7.21.3(@babel/core@7.21.3)(eslint@8.36.0)
-      '@typescript-eslint/eslint-plugin': 5.55.0(@typescript-eslint/parser@5.55.0)(eslint@8.36.0)(typescript@4.9.5)
-      '@typescript-eslint/parser': 5.55.0(eslint@8.36.0)(typescript@4.9.5)
+      '@typescript-eslint/eslint-plugin': 5.55.0(@typescript-eslint/parser@5.55.0)(eslint@8.36.0)(typescript@5.0.2)
+      '@typescript-eslint/parser': 5.55.0(eslint@8.36.0)(typescript@5.0.2)
       cosmiconfig: 8.1.0
       eslint: 8.36.0
       eslint-import-resolver-typescript: 3.5.3(eslint-plugin-import@2.27.5)(eslint@8.36.0)
@@ -4008,7 +4008,7 @@ packages:
       '@types/yargs-parser': 21.0.0
     dev: true
 
-  /@typescript-eslint/eslint-plugin@5.55.0(@typescript-eslint/parser@5.55.0)(eslint@8.36.0)(typescript@4.9.5):
+  /@typescript-eslint/eslint-plugin@5.55.0(@typescript-eslint/parser@5.55.0)(eslint@8.36.0)(typescript@5.0.2):
     resolution: {integrity: sha512-IZGc50rtbjk+xp5YQoJvmMPmJEYoC53SiKPXyqWfv15XoD2Y5Kju6zN0DwlmaGJp1Iw33JsWJcQ7nw0lGCGjVg==}
     engines: {node: ^12.22.0 || ^14.17.0 || >=16.0.0}
     peerDependencies:
@@ -4020,23 +4020,23 @@ packages:
         optional: true
     dependencies:
       '@eslint-community/regexpp': 4.4.0
-      '@typescript-eslint/parser': 5.55.0(eslint@8.36.0)(typescript@4.9.5)
+      '@typescript-eslint/parser': 5.55.0(eslint@8.36.0)(typescript@5.0.2)
       '@typescript-eslint/scope-manager': 5.55.0
-      '@typescript-eslint/type-utils': 5.55.0(eslint@8.36.0)(typescript@4.9.5)
-      '@typescript-eslint/utils': 5.55.0(eslint@8.36.0)(typescript@4.9.5)
+      '@typescript-eslint/type-utils': 5.55.0(eslint@8.36.0)(typescript@5.0.2)
+      '@typescript-eslint/utils': 5.55.0(eslint@8.36.0)(typescript@5.0.2)
       debug: 4.3.4(supports-color@8.1.1)
       eslint: 8.36.0
       grapheme-splitter: 1.0.4
       ignore: 5.2.4
       natural-compare-lite: 1.4.0
       semver: 7.3.8
-      tsutils: 3.21.0(typescript@4.9.5)
-      typescript: 4.9.5
+      tsutils: 3.21.0(typescript@5.0.2)
+      typescript: 5.0.2
     transitivePeerDependencies:
       - supports-color
     dev: true
 
-  /@typescript-eslint/parser@5.55.0(eslint@8.36.0)(typescript@4.9.5):
+  /@typescript-eslint/parser@5.55.0(eslint@8.36.0)(typescript@5.0.2):
     resolution: {integrity: sha512-ppvmeF7hvdhUUZWSd2EEWfzcFkjJzgNQzVST22nzg958CR+sphy8A6K7LXQZd6V75m1VKjp+J4g/PCEfSCmzhw==}
     engines: {node: ^12.22.0 || ^14.17.0 || >=16.0.0}
     peerDependencies:
@@ -4048,10 +4048,10 @@ packages:
     dependencies:
       '@typescript-eslint/scope-manager': 5.55.0
       '@typescript-eslint/types': 5.55.0
-      '@typescript-eslint/typescript-estree': 5.55.0(typescript@4.9.5)
+      '@typescript-eslint/typescript-estree': 5.55.0(typescript@5.0.2)
       debug: 4.3.4(supports-color@8.1.1)
       eslint: 8.36.0
-      typescript: 4.9.5
+      typescript: 5.0.2
     transitivePeerDependencies:
       - supports-color
     dev: true
@@ -4064,7 +4064,7 @@ packages:
       '@typescript-eslint/visitor-keys': 5.55.0
     dev: true
 
-  /@typescript-eslint/type-utils@5.55.0(eslint@8.36.0)(typescript@4.9.5):
+  /@typescript-eslint/type-utils@5.55.0(eslint@8.36.0)(typescript@5.0.2):
     resolution: {integrity: sha512-ObqxBgHIXj8rBNm0yh8oORFrICcJuZPZTqtAFh0oZQyr5DnAHZWfyw54RwpEEH+fD8suZaI0YxvWu5tYE/WswA==}
     engines: {node: ^12.22.0 || ^14.17.0 || >=16.0.0}
     peerDependencies:
@@ -4074,12 +4074,12 @@ packages:
       typescript:
         optional: true
     dependencies:
-      '@typescript-eslint/typescript-estree': 5.55.0(typescript@4.9.5)
-      '@typescript-eslint/utils': 5.55.0(eslint@8.36.0)(typescript@4.9.5)
+      '@typescript-eslint/typescript-estree': 5.55.0(typescript@5.0.2)
+      '@typescript-eslint/utils': 5.55.0(eslint@8.36.0)(typescript@5.0.2)
       debug: 4.3.4(supports-color@8.1.1)
       eslint: 8.36.0
-      tsutils: 3.21.0(typescript@4.9.5)
-      typescript: 4.9.5
+      tsutils: 3.21.0(typescript@5.0.2)
+      typescript: 5.0.2
     transitivePeerDependencies:
       - supports-color
     dev: true
@@ -4089,7 +4089,7 @@ packages:
     engines: {node: ^12.22.0 || ^14.17.0 || >=16.0.0}
     dev: true
 
-  /@typescript-eslint/typescript-estree@5.55.0(typescript@4.9.5):
+  /@typescript-eslint/typescript-estree@5.55.0(typescript@5.0.2):
     resolution: {integrity: sha512-I7X4A9ovA8gdpWMpr7b1BN9eEbvlEtWhQvpxp/yogt48fy9Lj3iE3ild/1H3jKBBIYj5YYJmS2+9ystVhC7eaQ==}
     engines: {node: ^12.22.0 || ^14.17.0 || >=16.0.0}
     peerDependencies:
@@ -4104,13 +4104,13 @@ packages:
       globby: 11.1.0
       is-glob: 4.0.3
       semver: 7.3.8
-      tsutils: 3.21.0(typescript@4.9.5)
-      typescript: 4.9.5
+      tsutils: 3.21.0(typescript@5.0.2)
+      typescript: 5.0.2
     transitivePeerDependencies:
       - supports-color
     dev: true
 
-  /@typescript-eslint/utils@5.55.0(eslint@8.36.0)(typescript@4.9.5):
+  /@typescript-eslint/utils@5.55.0(eslint@8.36.0)(typescript@5.0.2):
     resolution: {integrity: sha512-FkW+i2pQKcpDC3AY6DU54yl8Lfl14FVGYDgBTyGKB75cCwV3KpkpTMFi9d9j2WAJ4271LR2HeC5SEWF/CZmmfw==}
     engines: {node: ^12.22.0 || ^14.17.0 || >=16.0.0}
     peerDependencies:
@@ -4121,7 +4121,7 @@ packages:
       '@types/semver': 7.3.13
       '@typescript-eslint/scope-manager': 5.55.0
       '@typescript-eslint/types': 5.55.0
-      '@typescript-eslint/typescript-estree': 5.55.0(typescript@4.9.5)
+      '@typescript-eslint/typescript-estree': 5.55.0(typescript@5.0.2)
       eslint: 8.36.0
       eslint-scope: 5.1.1
       semver: 7.3.8
@@ -6405,14 +6405,14 @@ packages:
   /commondir@1.0.1:
     resolution: {integrity: sha512-W9pAhw0ja1Edb5GVdIF1mjZw/ASI0AlShXM83UUGe2DVr5TdAPEA1OA8m/g8zWp9x6On7gqufY+FatDbC3MDQg==}
 
-  /compatfactory@2.0.9(typescript@4.9.5):
+  /compatfactory@2.0.9(typescript@5.0.2):
     resolution: {integrity: sha512-fvO+AWcmbO7P1S+A3mwm3IGr74eHMeq5ZLhNhyNQc9mVDNHT4oe0Gg0ksdIFFNXLK7k7Z/TYcLAUSQdRgh1bsA==}
     engines: {node: '>=14.9.0'}
     peerDependencies:
       typescript: '>=3.x || >= 4.x'
     dependencies:
       helpertypes: 0.0.19
-      typescript: 4.9.5
+      typescript: 5.0.2
     dev: true
 
   /component-emitter@1.3.0:
@@ -8936,7 +8936,7 @@ packages:
       eslint-import-resolver-webpack:
         optional: true
     dependencies:
-      '@typescript-eslint/parser': 5.55.0(eslint@8.36.0)(typescript@4.9.5)
+      '@typescript-eslint/parser': 5.55.0(eslint@8.36.0)(typescript@5.0.2)
       debug: 3.2.7
       eslint: 8.36.0
       eslint-import-resolver-node: 0.3.7
@@ -9044,7 +9044,7 @@ packages:
       '@typescript-eslint/parser':
         optional: true
     dependencies:
-      '@typescript-eslint/parser': 5.55.0(eslint@8.36.0)(typescript@4.9.5)
+      '@typescript-eslint/parser': 5.55.0(eslint@8.36.0)(typescript@5.0.2)
       array-includes: 3.1.6
       array.prototype.flat: 1.3.1
       array.prototype.flatmap: 1.3.1
@@ -13502,7 +13502,7 @@ packages:
       del: 5.1.0
     dev: true
 
-  /rollup-plugin-ts@3.2.0(@babel/core@7.21.3)(@babel/preset-typescript@7.21.0)(@babel/runtime@7.21.0)(rollup@3.19.1)(typescript@4.9.5):
+  /rollup-plugin-ts@3.2.0(@babel/core@7.21.3)(@babel/preset-typescript@7.21.0)(@babel/runtime@7.21.0)(rollup@3.19.1)(typescript@5.0.2):
     resolution: {integrity: sha512-KkTLVifkUexEiAXS9VtSjDrjKr0TyusmNJpb2ZTAzI9VuPumSu4AktIaVNnwv70iUEitHwZtET7OAM+5n1u1tg==}
     engines: {node: '>=14.9.0', npm: '>=7.0.0', pnpm: '>=3.2.0', yarn: '>=1.13'}
     peerDependencies:
@@ -13539,13 +13539,13 @@ packages:
       ansi-colors: 4.1.3
       browserslist: 4.21.5
       browserslist-generator: 2.0.3
-      compatfactory: 2.0.9(typescript@4.9.5)
+      compatfactory: 2.0.9(typescript@5.0.2)
       crosspath: 2.0.0
       magic-string: 0.27.0
       rollup: 3.19.1
-      ts-clone-node: 2.0.4(typescript@4.9.5)
+      ts-clone-node: 2.0.4(typescript@5.0.2)
       tslib: 2.5.0
-      typescript: 4.9.5
+      typescript: 5.0.2
     dev: true
 
   /rollup-pluginutils@2.8.2:
@@ -14877,14 +14877,14 @@ packages:
     engines: {node: '>=8'}
     dev: true
 
-  /ts-clone-node@2.0.4(typescript@4.9.5):
+  /ts-clone-node@2.0.4(typescript@5.0.2):
     resolution: {integrity: sha512-eG6FAgmQsenhIJOIFhUcO6yyYejBKZIKcI3y21jiQmIOrth5pD6GElyPAyeihbPSyBs3u/9PVNXy+5I7jGy8jA==}
     engines: {node: '>=14.9.0'}
     peerDependencies:
       typescript: ^3.x || ^4.x
     dependencies:
-      compatfactory: 2.0.9(typescript@4.9.5)
-      typescript: 4.9.5
+      compatfactory: 2.0.9(typescript@5.0.2)
+      typescript: 5.0.2
     dev: true
 
   /ts-replace-all@1.0.0:
@@ -14910,14 +14910,14 @@ packages:
     resolution: {integrity: sha512-336iVw3rtn2BUK7ORdIAHTyxHGRIHVReokCR3XjbckJMK7ms8FysBfhLR8IXnAgy7T0PTPNBWKiH514FOW/WSg==}
     dev: true
 
-  /tsutils@3.21.0(typescript@4.9.5):
+  /tsutils@3.21.0(typescript@5.0.2):
     resolution: {integrity: sha512-mHKK3iUXL+3UF6xL5k0PEhKRUBKPBCv/+RkEOpjRWxxx27KKRBmmA60A9pgOUvMi8GKhRMPEmjBRPzs2W7O1OA==}
     engines: {node: '>= 6'}
     peerDependencies:
       typescript: '>=2.8.0 || >= 3.2.0-dev || >= 3.3.0-dev || >= 3.4.0-dev || >= 3.5.0-dev || >= 3.6.0-dev || >= 3.6.0-beta || >= 3.7.0-dev || >= 3.7.0-beta'
     dependencies:
       tslib: 1.14.1
-      typescript: 4.9.5
+      typescript: 5.0.2
     dev: true
 
   /tty-table@4.1.6:
@@ -15068,9 +15068,9 @@ packages:
   /typescript-memoize@1.1.1:
     resolution: {integrity: sha512-GQ90TcKpIH4XxYTI2F98yEQYZgjNMOGPpOgdjIBhaLaWji5HPWlRnZ4AeA1hfBxtY7bCGDJsqDDHk/KaHOl5bA==}
 
-  /typescript@4.9.5:
-    resolution: {integrity: sha512-1FXk9E2Hm+QzZQ7z+McJiHL4NW1F2EzMu9Nq9i3zAaGqibafqYwCVU6WyWAuyQRRzOlxou8xZSyXLEN8oKj24g==}
-    engines: {node: '>=4.2.0'}
+  /typescript@5.0.2:
+    resolution: {integrity: sha512-wVORMBGO/FAs/++blGNeAVdbNKtIh1rbBL2EyQ1+J9lClJ93KiiKe8PmFIVdXhHcyv44SL9oglmfeSsndo0jRw==}
+    engines: {node: '>=12.20'}
     hasBin: true
     dev: true
 
diff --git a/test-packages/test-app/package.json b/test-packages/test-app/package.json
index 801f5be..a395add 100644
--- a/test-packages/test-app/package.json
+++ b/test-packages/test-app/package.json
@@ -79,7 +79,7 @@
     "qunit": "^2.19.4",
     "qunit-dom": "^2.0.0",
     "tracked-built-ins": "^3.1.1",
-    "typescript": "^4.9.5",
+    "typescript": "^5.0.0",
     "webpack": "^5.76.1"
   },
   "engines": {
diff --git a/test-packages/test-rollup-addon-gts/package.json b/test-packages/test-rollup-addon-gts/package.json
index 75c9b17..15f67eb 100644
--- a/test-packages/test-rollup-addon-gts/package.json
+++ b/test-packages/test-rollup-addon-gts/package.json
@@ -59,7 +59,7 @@
     "rollup": "^3.19.1",
     "rollup-plugin-glimmer-template-tag": "workspace:*",
     "rollup-plugin-ts": "^3.2.0",
-    "typescript": "^4.9.5"
+    "typescript": "^5.0.0"
   },
   "ember-addon": {
     "version": 2,
diff --git a/test-packages/test-rollup-addon-node-resolve/package.json b/test-packages/test-rollup-addon-node-resolve/package.json
index 9e3bfbf..5ab3f63 100644
--- a/test-packages/test-rollup-addon-node-resolve/package.json
+++ b/test-packages/test-rollup-addon-node-resolve/package.json
@@ -53,7 +53,7 @@
     "prettier": "^2.8.4",
     "rollup": "^3.19.1",
     "rollup-plugin-glimmer-template-tag": "workspace:*",
-    "typescript": "^4.9.5"
+    "typescript": "^5.0.0"
   },
   "ember-addon": {
     "version": 2,
diff --git a/test-packages/test-rollup-addon-split-gts/package.json b/test-packages/test-rollup-addon-split-gts/package.json
index dd8b304..aa2f323 100644
--- a/test-packages/test-rollup-addon-split-gts/package.json
+++ b/test-packages/test-rollup-addon-split-gts/package.json
@@ -59,7 +59,7 @@
     "rollup": "^3.19.1",
     "rollup-plugin-glimmer-template-tag": "workspace:*",
     "rollup-plugin-ts": "^3.2.0",
-    "typescript": "^4.9.5"
+    "typescript": "^5.0.0"
   },
   "ember-addon": {
     "version": 2,