diff --git a/.github/workflows/pull-request.yml b/.github/workflows/pull-request.yml
index fd63f5b9d..418253e25 100644
--- a/.github/workflows/pull-request.yml
+++ b/.github/workflows/pull-request.yml
@@ -6,7 +6,7 @@ on:
 
 concurrency:
   cancel-in-progress: true
-  group: ${{ github.head_ref }}
+  group: pr-${{ github.event.pull_request.number }}
 
 jobs:
   test:
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: [20, 22, 24, 25]
+        node-version: [20, 22, 24, 26]
     steps:
       - uses: actions/checkout@v6
       - uses: ./.github/actions/install
diff --git a/.pnp.cjs b/.pnp.cjs
index 9f6c36907..6b60acd84 100755
--- a/.pnp.cjs
+++ b/.pnp.cjs
@@ -832,7 +832,7 @@ const RAW_RUNTIME_STATE =
           ["lodash", "npm:4.18.1"],\
           ["prettier", "npm:3.8.3"],\
           ["rimraf", "npm:6.1.3"],\
-          ["ts-morph", "npm:27.0.2"],\
+          ["ts-morph", "npm:28.0.0"],\
           ["tslib", "npm:2.8.1"],\
           ["typescript", "patch:typescript@npm%3A6.0.3#optional!builtin<compat/typescript>::version=6.0.3&hash=5786d5"],\
           ["typescript-json-schema", "npm:0.67.4"],\
@@ -864,7 +864,7 @@ const RAW_RUNTIME_STATE =
           ["lodash", "npm:4.18.1"],\
           ["prettier", "npm:3.8.3"],\
           ["rimraf", "npm:6.1.3"],\
-          ["ts-morph", "npm:27.0.2"],\
+          ["ts-morph", "npm:28.0.0"],\
           ["tslib", "npm:2.8.1"],\
           ["typescript", "patch:typescript@npm%3A6.0.3#optional!builtin<compat/typescript>::version=6.0.3&hash=5786d5"],\
           ["typescript-json-schema", "npm:0.67.4"],\
@@ -890,7 +890,7 @@ const RAW_RUNTIME_STATE =
           ["io-ts", "virtual:c002b73213eac6876e4c7e8f1127022782443aa320c59f94c9da4dba1061f563e8f79297a86e377447e442af2f7b8a81ae3d0fb9d1954c7b72bb472f07eede19#npm:2.2.22"],\
           ["rimraf", "npm:6.1.3"],\
           ["title-case", "npm:4.3.2"],\
-          ["ts-morph", "npm:27.0.2"],\
+          ["ts-morph", "npm:28.0.0"],\
           ["tslib", "npm:2.8.1"],\
           ["typescript", "patch:typescript@npm%3A6.0.3#optional!builtin<compat/typescript>::version=6.0.3&hash=5786d5"],\
           ["vitest", "virtual:9af6ad551183488fdcf67ab4d2a6b7db121574c52b81e5e9dd82d71c2425158bec35fb2f6cfd71372398534f37f2c1a824c5b4b40797053c0402f99390a749ec#npm:4.1.8"]\
@@ -940,7 +940,7 @@ const RAW_RUNTIME_STATE =
           ["@types/node", "npm:24.12.4"],\
           ["rimraf", "npm:6.1.3"],\
           ["runtypes", "npm:7.0.4"],\
-          ["ts-morph", "npm:27.0.2"],\
+          ["ts-morph", "npm:28.0.0"],\
           ["tslib", "npm:2.8.1"],\
           ["typescript", "patch:typescript@npm%3A6.0.3#optional!builtin<compat/typescript>::version=6.0.3&hash=5786d5"],\
           ["vitest", "virtual:9af6ad551183488fdcf67ab4d2a6b7db121574c52b81e5e9dd82d71c2425158bec35fb2f6cfd71372398534f37f2c1a824c5b4b40797053c0402f99390a749ec#npm:4.1.8"]\
@@ -964,7 +964,7 @@ const RAW_RUNTIME_STATE =
           ["mkdirp", "npm:3.0.1"],\
           ["rimraf", "npm:6.1.3"],\
           ["runtypes", "npm:6.5.1"],\
-          ["ts-morph", "npm:27.0.2"],\
+          ["ts-morph", "npm:28.0.0"],\
           ["tslib", "npm:2.8.1"],\
           ["type-fest", "npm:5.7.0"],\
           ["typescript", "patch:typescript@npm%3A6.0.3#optional!builtin<compat/typescript>::version=6.0.3&hash=5786d5"],\
@@ -993,7 +993,7 @@ const RAW_RUNTIME_STATE =
           ["mkdirp", "npm:3.0.1"],\
           ["rimraf", "npm:6.1.3"],\
           ["runtypes", "npm:6.5.1"],\
-          ["ts-morph", "npm:27.0.2"],\
+          ["ts-morph", "npm:28.0.0"],\
           ["tslib", "npm:2.8.1"],\
           ["type-fest", "npm:5.7.0"],\
           ["typescript", "patch:typescript@npm%3A6.0.3#optional!builtin<compat/typescript>::version=6.0.3&hash=5786d5"],\
@@ -1013,7 +1013,7 @@ const RAW_RUNTIME_STATE =
           ["@types/json-schema", "npm:7.0.15"],\
           ["@types/node", "npm:24.12.4"],\
           ["rimraf", "npm:6.1.3"],\
-          ["ts-morph", "npm:27.0.2"],\
+          ["ts-morph", "npm:28.0.0"],\
           ["tslib", "npm:2.8.1"],\
           ["typescript", "patch:typescript@npm%3A6.0.3#optional!builtin<compat/typescript>::version=6.0.3&hash=5786d5"],\
           ["valibot", "virtual:9949236162c857fc51b2d966c0785246f08d1aa936472152350088a23a318cafbc25a0b7dda4767a4ca4828c76e5b04fd64538f943161eb110a8e062d4003a0f#npm:1.4.1"],\
@@ -1033,7 +1033,7 @@ const RAW_RUNTIME_STATE =
           ["@types/json-schema", "npm:7.0.15"],\
           ["@types/node", "npm:24.12.4"],\
           ["rimraf", "npm:6.1.3"],\
-          ["ts-morph", "npm:27.0.2"],\
+          ["ts-morph", "npm:28.0.0"],\
           ["ts-toolbelt", "npm:9.6.0"],\
           ["tslib", "npm:2.8.1"],\
           ["typescript", "patch:typescript@npm%3A6.0.3#optional!builtin<compat/typescript>::version=6.0.3&hash=5786d5"],\
@@ -1056,7 +1056,7 @@ const RAW_RUNTIME_STATE =
           ["@types/node", "npm:24.12.4"],\
           ["rimraf", "npm:6.1.3"],\
           ["title-case", "npm:4.3.2"],\
-          ["ts-morph", "npm:27.0.2"],\
+          ["ts-morph", "npm:28.0.0"],\
           ["tslib", "npm:2.8.1"],\
           ["typescript", "patch:typescript@npm%3A6.0.3#optional!builtin<compat/typescript>::version=6.0.3&hash=5786d5"],\
           ["vitest", "virtual:9af6ad551183488fdcf67ab4d2a6b7db121574c52b81e5e9dd82d71c2425158bec35fb2f6cfd71372398534f37f2c1a824c5b4b40797053c0402f99390a749ec#npm:4.1.8"],\
@@ -1073,7 +1073,7 @@ const RAW_RUNTIME_STATE =
           ["@runtyping/zod-core", "virtual:d80ef0e0092f984209dfea304929b09c3b532763a3105568a151353f56d31e1d3f423712461a4bc5c42f6d5d0f71c15f39f248129565c51d1f526f03a46755e5#workspace:packages/zod-core"],\
           ["@types/zod", null],\
           ["title-case", "npm:4.3.2"],\
-          ["ts-morph", "npm:27.0.2"],\
+          ["ts-morph", "npm:28.0.0"],\
           ["tslib", "npm:2.8.1"],\
           ["typescript", "patch:typescript@npm%3A6.0.3#optional!builtin<compat/typescript>::version=6.0.3&hash=5786d5"],\
           ["zod", "npm:4.4.3"]\
@@ -1090,7 +1090,7 @@ const RAW_RUNTIME_STATE =
           ["@runtyping/generator", "virtual:c002b73213eac6876e4c7e8f1127022782443aa320c59f94c9da4dba1061f563e8f79297a86e377447e442af2f7b8a81ae3d0fb9d1954c7b72bb472f07eede19#workspace:packages/generator"],\
           ["@runtyping/zod-core", "workspace:packages/zod-core"],\
           ["title-case", "npm:4.3.2"],\
-          ["ts-morph", "npm:27.0.2"],\
+          ["ts-morph", "npm:28.0.0"],\
           ["tslib", "npm:2.8.1"],\
           ["typescript", "patch:typescript@npm%3A6.0.3#optional!builtin<compat/typescript>::version=6.0.3&hash=5786d5"],\
           ["zod", "npm:4.4.3"]\
@@ -1110,7 +1110,7 @@ const RAW_RUNTIME_STATE =
           ["@types/node", "npm:24.12.4"],\
           ["rimraf", "npm:6.1.3"],\
           ["title-case", "npm:4.3.2"],\
-          ["ts-morph", "npm:27.0.2"],\
+          ["ts-morph", "npm:28.0.0"],\
           ["tslib", "npm:2.8.1"],\
           ["typescript", "patch:typescript@npm%3A6.0.3#optional!builtin<compat/typescript>::version=6.0.3&hash=5786d5"],\
           ["vitest", "virtual:9af6ad551183488fdcf67ab4d2a6b7db121574c52b81e5e9dd82d71c2425158bec35fb2f6cfd71372398534f37f2c1a824c5b4b40797053c0402f99390a749ec#npm:4.1.8"],\
@@ -1157,16 +1157,6 @@ const RAW_RUNTIME_STATE =
       }]\
     ]],\
     ["@ts-morph/common", [\
-      ["npm:0.28.1", {\
-        "packageLocation": "./.yarn/cache/@ts-morph-common-npm-0.28.1-48cadd11c4-d5c6ed11cf.zip/node_modules/@ts-morph/common/",\
-        "packageDependencies": [\
-          ["@ts-morph/common", "npm:0.28.1"],\
-          ["minimatch", "npm:10.1.1"],\
-          ["path-browserify", "npm:1.0.1"],\
-          ["tinyglobby", "npm:0.2.15"]\
-        ],\
-        "linkType": "HARD"\
-      }],\
       ["npm:0.29.0", {\
         "packageLocation": "./.yarn/cache/@ts-morph-common-npm-0.29.0-7860c29a60-d23cfb6c81.zip/node_modules/@ts-morph/common/",\
         "packageDependencies": [\
@@ -5701,12 +5691,12 @@ const RAW_RUNTIME_STATE =
       }]\
     ]],\
     ["ts-morph", [\
-      ["npm:27.0.2", {\
-        "packageLocation": "./.yarn/cache/ts-morph-npm-27.0.2-9217ac03ef-b9bd8ed86d.zip/node_modules/ts-morph/",\
+      ["npm:28.0.0", {\
+        "packageLocation": "./.yarn/cache/ts-morph-npm-28.0.0-ea88d294f7-fb5541c2c5.zip/node_modules/ts-morph/",\
         "packageDependencies": [\
-          ["@ts-morph/common", "npm:0.28.1"],\
+          ["@ts-morph/common", "npm:0.29.0"],\
           ["code-block-writer", "npm:13.0.3"],\
-          ["ts-morph", "npm:27.0.2"]\
+          ["ts-morph", "npm:28.0.0"]\
         ],\
         "linkType": "HARD"\
       }]\
diff --git a/.yarn/cache/@ts-morph-common-npm-0.28.1-48cadd11c4-d5c6ed11cf.zip b/.yarn/cache/@ts-morph-common-npm-0.28.1-48cadd11c4-d5c6ed11cf.zip
deleted file mode 100644
index af1038176..000000000
Binary files a/.yarn/cache/@ts-morph-common-npm-0.28.1-48cadd11c4-d5c6ed11cf.zip and /dev/null differ
diff --git a/.yarn/cache/ts-morph-npm-27.0.2-9217ac03ef-b9bd8ed86d.zip b/.yarn/cache/ts-morph-npm-27.0.2-9217ac03ef-b9bd8ed86d.zip
deleted file mode 100644
index 1e5d587be..000000000
Binary files a/.yarn/cache/ts-morph-npm-27.0.2-9217ac03ef-b9bd8ed86d.zip and /dev/null differ
diff --git a/.yarn/cache/ts-morph-npm-28.0.0-ea88d294f7-fb5541c2c5.zip b/.yarn/cache/ts-morph-npm-28.0.0-ea88d294f7-fb5541c2c5.zip
new file mode 100644
index 000000000..828299703
Binary files /dev/null and b/.yarn/cache/ts-morph-npm-28.0.0-ea88d294f7-fb5541c2c5.zip differ
diff --git a/packages/generator/package.json b/packages/generator/package.json
index a003c22be..1eedb36f2 100644
--- a/packages/generator/package.json
+++ b/packages/generator/package.json
@@ -43,7 +43,7 @@
     "js-yaml": "4.2.0",
     "json-schema-to-typescript": "15.0.4",
     "lodash": "4.18.1",
-    "ts-morph": "27.0.2",
+    "ts-morph": "28.0.0",
     "tslib": "2.8.1",
     "yargs": "18.0.0",
     "zod": "4.4.3"
diff --git a/packages/generator/src/object.ts b/packages/generator/src/object.ts
index 7f67a1248..53bde49d5 100644
--- a/packages/generator/src/object.ts
+++ b/packages/generator/src/object.ts
@@ -19,7 +19,8 @@ export function isBuiltInType(type: Type) {
     .getSymbolOrThrow()
     .getDeclarations()
     .some((d) => {
-      if (d.getSourceFile().compilerNode.hasNoDefaultLib) {
+      const program = d.getProject().getProgram().compilerObject
+      if (program.isSourceFileDefaultLibrary(d.getSourceFile().compilerNode)) {
         const name = type.getSymbolOrThrow().getName()
         const parent = d.getParentOrThrow()
         const siblings = (
diff --git a/packages/io-ts/package.json b/packages/io-ts/package.json
index 8ba0bf1f1..f9d67af2c 100644
--- a/packages/io-ts/package.json
+++ b/packages/io-ts/package.json
@@ -36,7 +36,7 @@
     "@runtyping/generator": "workspace:*",
     "@ts-morph/common": "0.29.0",
     "title-case": "4.3.2",
-    "ts-morph": "27.0.2",
+    "ts-morph": "28.0.0",
     "tslib": "2.8.1"
   }
 }
diff --git a/packages/runtypes/package.json b/packages/runtypes/package.json
index ebc4c7782..c5c37a21f 100644
--- a/packages/runtypes/package.json
+++ b/packages/runtypes/package.json
@@ -37,7 +37,7 @@
   },
   "dependencies": {
     "@runtyping/generator": "workspace:*",
-    "ts-morph": "27.0.2",
+    "ts-morph": "28.0.0",
     "tslib": "2.8.1"
   }
 }
diff --git a/packages/test-type-writers/package.json b/packages/test-type-writers/package.json
index 0d7c23064..6a99f866d 100644
--- a/packages/test-type-writers/package.json
+++ b/packages/test-type-writers/package.json
@@ -44,7 +44,7 @@
   "dependencies": {
     "assert-never": "1.4.0",
     "mkdirp": "3.0.1",
-    "ts-morph": "27.0.2",
+    "ts-morph": "28.0.0",
     "tslib": "2.8.1"
   }
 }
diff --git a/packages/valibot/package.json b/packages/valibot/package.json
index 318578635..4339024ef 100644
--- a/packages/valibot/package.json
+++ b/packages/valibot/package.json
@@ -32,7 +32,7 @@
   },
   "dependencies": {
     "@runtyping/generator": "workspace:*",
-    "ts-morph": "27.0.2",
+    "ts-morph": "28.0.0",
     "tslib": "2.8.1"
   }
 }
diff --git a/packages/yup/package.json b/packages/yup/package.json
index c1a157df7..3f89ac353 100644
--- a/packages/yup/package.json
+++ b/packages/yup/package.json
@@ -34,7 +34,7 @@
   "dependencies": {
     "@runtyping/generator": "workspace:*",
     "@ts-morph/common": "0.29.0",
-    "ts-morph": "27.0.2",
+    "ts-morph": "28.0.0",
     "ts-toolbelt": "9.6.0",
     "tslib": "2.8.1"
   }
diff --git a/packages/zod-core/package.json b/packages/zod-core/package.json
index ec7e6a564..bc0b3387c 100644
--- a/packages/zod-core/package.json
+++ b/packages/zod-core/package.json
@@ -25,7 +25,7 @@
   "dependencies": {
     "@runtyping/generator": "workspace:*",
     "title-case": "4.3.2",
-    "ts-morph": "27.0.2",
+    "ts-morph": "28.0.0",
     "tslib": "2.8.1"
   },
   "devDependencies": {
diff --git a/packages/zod-mini/package.json b/packages/zod-mini/package.json
index 1acb74d38..103a6a21a 100644
--- a/packages/zod-mini/package.json
+++ b/packages/zod-mini/package.json
@@ -34,7 +34,7 @@
     "@runtyping/generator": "workspace:*",
     "@runtyping/zod-core": "workspace:*",
     "title-case": "4.3.2",
-    "ts-morph": "27.0.2",
+    "ts-morph": "28.0.0",
     "tslib": "2.8.1"
   }
 }
diff --git a/packages/zod/package.json b/packages/zod/package.json
index ae6618cbf..153ca0114 100644
--- a/packages/zod/package.json
+++ b/packages/zod/package.json
@@ -34,7 +34,7 @@
     "@runtyping/generator": "workspace:*",
     "@runtyping/zod-core": "workspace:*",
     "title-case": "4.3.2",
-    "ts-morph": "27.0.2",
+    "ts-morph": "28.0.0",
     "tslib": "2.8.1"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index 5a9fb8d73..e7584f5c0 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -610,7 +610,7 @@ __metadata:
     lodash: "npm:4.18.1"
     prettier: "npm:3.8.3"
     rimraf: "npm:6.1.3"
-    ts-morph: "npm:27.0.2"
+    ts-morph: "npm:28.0.0"
     tslib: "npm:2.8.1"
     typescript: "npm:6.0.3"
     typescript-json-schema: "npm:0.67.4"
@@ -636,7 +636,7 @@ __metadata:
     io-ts: "npm:2.2.22"
     rimraf: "npm:6.1.3"
     title-case: "npm:4.3.2"
-    ts-morph: "npm:27.0.2"
+    ts-morph: "npm:28.0.0"
     tslib: "npm:2.8.1"
     typescript: "npm:6.0.3"
     vitest: "npm:4.1.8"
@@ -686,7 +686,7 @@ __metadata:
     "@types/node": "npm:24.12.4"
     rimraf: "npm:6.1.3"
     runtypes: "npm:7.0.4"
-    ts-morph: "npm:27.0.2"
+    ts-morph: "npm:28.0.0"
     tslib: "npm:2.8.1"
     typescript: "npm:6.0.3"
     vitest: "npm:4.1.8"
@@ -709,7 +709,7 @@ __metadata:
     assert-never: "npm:1.4.0"
     mkdirp: "npm:3.0.1"
     rimraf: "npm:6.1.3"
-    ts-morph: "npm:27.0.2"
+    ts-morph: "npm:28.0.0"
     tslib: "npm:2.8.1"
     type-fest: "npm:5.7.0"
     typescript: "npm:6.0.3"
@@ -730,7 +730,7 @@ __metadata:
     "@types/json-schema": "npm:7.0.15"
     "@types/node": "npm:24.12.4"
     rimraf: "npm:6.1.3"
-    ts-morph: "npm:27.0.2"
+    ts-morph: "npm:28.0.0"
     tslib: "npm:2.8.1"
     typescript: "npm:6.0.3"
     valibot: "npm:1.4.1"
@@ -752,7 +752,7 @@ __metadata:
     "@types/json-schema": "npm:7.0.15"
     "@types/node": "npm:24.12.4"
     rimraf: "npm:6.1.3"
-    ts-morph: "npm:27.0.2"
+    ts-morph: "npm:28.0.0"
     ts-toolbelt: "npm:9.6.0"
     tslib: "npm:2.8.1"
     typescript: "npm:6.0.3"
@@ -772,7 +772,7 @@ __metadata:
   dependencies:
     "@runtyping/generator": "workspace:*"
     title-case: "npm:4.3.2"
-    ts-morph: "npm:27.0.2"
+    ts-morph: "npm:28.0.0"
     tslib: "npm:2.8.1"
     typescript: "npm:6.0.3"
     zod: "npm:4.4.3"
@@ -792,7 +792,7 @@ __metadata:
     "@types/node": "npm:24.12.4"
     rimraf: "npm:6.1.3"
     title-case: "npm:4.3.2"
-    ts-morph: "npm:27.0.2"
+    ts-morph: "npm:28.0.0"
     tslib: "npm:2.8.1"
     typescript: "npm:6.0.3"
     vitest: "npm:4.1.8"
@@ -815,7 +815,7 @@ __metadata:
     "@types/node": "npm:24.12.4"
     rimraf: "npm:6.1.3"
     title-case: "npm:4.3.2"
-    ts-morph: "npm:27.0.2"
+    ts-morph: "npm:28.0.0"
     tslib: "npm:2.8.1"
     typescript: "npm:6.0.3"
     vitest: "npm:4.1.8"
@@ -857,7 +857,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@ts-morph/common@npm:0.29.0":
+"@ts-morph/common@npm:0.29.0, @ts-morph/common@npm:~0.29.0":
   version: 0.29.0
   resolution: "@ts-morph/common@npm:0.29.0"
   dependencies:
@@ -868,17 +868,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@ts-morph/common@npm:~0.28.1":
-  version: 0.28.1
-  resolution: "@ts-morph/common@npm:0.28.1"
-  dependencies:
-    minimatch: "npm:^10.0.1"
-    path-browserify: "npm:^1.0.1"
-    tinyglobby: "npm:^0.2.14"
-  checksum: 10/d5c6ed11cf046c186c7263c28c7e9b5fbefb61c65b99f66cfe6a3b249f70f3fbf116b5aace2980602a7ceabecdc399065d5a7f14aabe5475eb43fd573a3cc665
-  languageName: node
-  linkType: hard
-
 "@tsconfig/node10@npm:^1.0.7":
   version: 1.0.8
   resolution: "@tsconfig/node10@npm:1.0.8"
@@ -5003,13 +4992,13 @@ __metadata:
   languageName: node
   linkType: hard
 
-"ts-morph@npm:27.0.2":
-  version: 27.0.2
-  resolution: "ts-morph@npm:27.0.2"
+"ts-morph@npm:28.0.0":
+  version: 28.0.0
+  resolution: "ts-morph@npm:28.0.0"
   dependencies:
-    "@ts-morph/common": "npm:~0.28.1"
+    "@ts-morph/common": "npm:~0.29.0"
     code-block-writer: "npm:^13.0.3"
-  checksum: 10/b9bd8ed86d4b76ca23446d3f808787cfe95a3bcb2316769a2f3fa262ea9ab4043bb76bf8aef677f9be0d758576f074df2926e701a535f84fd21946fdbf465148
+  checksum: 10/fb5541c2c5b25386ae85346203046cc136d4afa2821a9b7b5ea9ffdbcff6d8867eccf98a3d7d50dd86f64428f80cf4ae9e609bd8f02f99cef902ba2760ecd5d9
   languageName: node
   linkType: hard