diff --git a/package.json b/package.json
index e3ab7c5..957eff6 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
     "prettier": "^3.7.4",
     "ts-jest": "^29.1.1",
     "turbo": "^1.10.16",
-    "typescript": "^5.3.2",
+    "typescript": "^5.9.3",
     "@arethetypeswrong/cli": "^0.18.2"
   },
   "engines": {
diff --git a/packages/eslint-config-custom/package.json b/packages/eslint-config-custom/package.json
index c0fb4da..b5ac2c1 100644
--- a/packages/eslint-config-custom/package.json
+++ b/packages/eslint-config-custom/package.json
@@ -12,7 +12,7 @@
     "eslint-config-turbo": "^2.7.3"
   },
   "devDependencies": {
-    "typescript": "^5.3.2"
+    "typescript": "^5.9.3"
   },
   "publishConfig": {
     "access": "public"
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index c5ef8b7..edaa5b3 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -21,22 +21,22 @@ importers:
         version: 3.7.4
       ts-jest:
         specifier: ^29.1.1
-        version: 29.1.1(@babel/core@7.28.5)(jest@29.7.0)(typescript@5.3.2)
+        version: 29.1.1(@babel/core@7.28.5)(jest@29.7.0)(typescript@5.9.3)
       turbo:
         specifier: ^1.10.16
         version: 1.10.16
       typescript:
-        specifier: ^5.3.2
-        version: 5.3.2
+        specifier: ^5.9.3
+        version: 5.9.3
 
   packages/eslint-config-custom:
     dependencies:
       '@typescript-eslint/eslint-plugin':
         specifier: ^6.12.0
-        version: 6.12.0(@typescript-eslint/parser@6.13.1)(eslint@8.54.0)(typescript@5.3.2)
+        version: 6.12.0(@typescript-eslint/parser@6.13.1)(eslint@8.54.0)(typescript@5.9.3)
       '@typescript-eslint/parser':
         specifier: ^6.13.1
-        version: 6.13.1(eslint@8.54.0)(typescript@5.3.2)
+        version: 6.13.1(eslint@8.54.0)(typescript@5.9.3)
       eslint:
         specifier: ^8.54.0
         version: 8.54.0
@@ -51,8 +51,8 @@ importers:
         version: 1.0.0(eslint@8.54.0)
     devDependencies:
       typescript:
-        specifier: ^5.3.2
-        version: 5.3.2
+        specifier: ^5.9.3
+        version: 5.9.3
 
   packages/knit:
     dependencies:
@@ -86,7 +86,7 @@ importers:
         version: link:../tsconfig
       tsup:
         specifier: ^8.5.1
-        version: 8.5.1(typescript@5.3.2)
+        version: 8.5.1(typescript@5.9.3)
 
   packages/knit-test-spec:
     devDependencies:
@@ -1694,7 +1694,7 @@ packages:
       '@types/yargs-parser': 21.0.3
     dev: true
 
-  /@typescript-eslint/eslint-plugin@6.12.0(@typescript-eslint/parser@6.13.1)(eslint@8.54.0)(typescript@5.3.2):
+  /@typescript-eslint/eslint-plugin@6.12.0(@typescript-eslint/parser@6.13.1)(eslint@8.54.0)(typescript@5.9.3):
     resolution: {integrity: sha512-XOpZ3IyJUIV1b15M7HVOpgQxPPF7lGXgsfcEIu3yDxFPaf/xZKt7s9QO/pbk7vpWQyVulpJbu4E5LwpZiQo4kA==}
     engines: {node: ^16.0.0 || >=18.0.0}
     peerDependencies:
@@ -1706,10 +1706,10 @@ packages:
         optional: true
     dependencies:
       '@eslint-community/regexpp': 4.9.0
-      '@typescript-eslint/parser': 6.13.1(eslint@8.54.0)(typescript@5.3.2)
+      '@typescript-eslint/parser': 6.13.1(eslint@8.54.0)(typescript@5.9.3)
       '@typescript-eslint/scope-manager': 6.12.0
-      '@typescript-eslint/type-utils': 6.12.0(eslint@8.54.0)(typescript@5.3.2)
-      '@typescript-eslint/utils': 6.12.0(eslint@8.54.0)(typescript@5.3.2)
+      '@typescript-eslint/type-utils': 6.12.0(eslint@8.54.0)(typescript@5.9.3)
+      '@typescript-eslint/utils': 6.12.0(eslint@8.54.0)(typescript@5.9.3)
       '@typescript-eslint/visitor-keys': 6.12.0
       debug: 4.3.4
       eslint: 8.54.0
@@ -1717,13 +1717,13 @@ packages:
       ignore: 5.2.4
       natural-compare: 1.4.0
       semver: 7.5.4
-      ts-api-utils: 1.0.3(typescript@5.3.2)
-      typescript: 5.3.2
+      ts-api-utils: 1.0.3(typescript@5.9.3)
+      typescript: 5.9.3
     transitivePeerDependencies:
       - supports-color
     dev: false
 
-  /@typescript-eslint/parser@6.13.1(eslint@8.54.0)(typescript@5.3.2):
+  /@typescript-eslint/parser@6.13.1(eslint@8.54.0)(typescript@5.9.3):
     resolution: {integrity: sha512-fs2XOhWCzRhqMmQf0eicLa/CWSaYss2feXsy7xBD/pLyWke/jCIVc2s1ikEAtSW7ina1HNhv7kONoEfVNEcdDQ==}
     engines: {node: ^16.0.0 || >=18.0.0}
     peerDependencies:
@@ -1735,11 +1735,11 @@ packages:
     dependencies:
       '@typescript-eslint/scope-manager': 6.13.1
       '@typescript-eslint/types': 6.13.1
-      '@typescript-eslint/typescript-estree': 6.13.1(typescript@5.3.2)
+      '@typescript-eslint/typescript-estree': 6.13.1(typescript@5.9.3)
       '@typescript-eslint/visitor-keys': 6.13.1
       debug: 4.3.4
       eslint: 8.54.0
-      typescript: 5.3.2
+      typescript: 5.9.3
     transitivePeerDependencies:
       - supports-color
     dev: false
@@ -1760,7 +1760,7 @@ packages:
       '@typescript-eslint/visitor-keys': 6.13.1
     dev: false
 
-  /@typescript-eslint/type-utils@6.12.0(eslint@8.54.0)(typescript@5.3.2):
+  /@typescript-eslint/type-utils@6.12.0(eslint@8.54.0)(typescript@5.9.3):
     resolution: {integrity: sha512-WWmRXxhm1X8Wlquj+MhsAG4dU/Blvf1xDgGaYCzfvStP2NwPQh6KBvCDbiOEvaE0filhranjIlK/2fSTVwtBng==}
     engines: {node: ^16.0.0 || >=18.0.0}
     peerDependencies:
@@ -1770,12 +1770,12 @@ packages:
       typescript:
         optional: true
     dependencies:
-      '@typescript-eslint/typescript-estree': 6.12.0(typescript@5.3.2)
-      '@typescript-eslint/utils': 6.12.0(eslint@8.54.0)(typescript@5.3.2)
+      '@typescript-eslint/typescript-estree': 6.12.0(typescript@5.9.3)
+      '@typescript-eslint/utils': 6.12.0(eslint@8.54.0)(typescript@5.9.3)
       debug: 4.4.3
       eslint: 8.54.0
-      ts-api-utils: 1.0.3(typescript@5.3.2)
-      typescript: 5.3.2
+      ts-api-utils: 1.0.3(typescript@5.9.3)
+      typescript: 5.9.3
     transitivePeerDependencies:
       - supports-color
     dev: false
@@ -1790,7 +1790,7 @@ packages:
     engines: {node: ^16.0.0 || >=18.0.0}
     dev: false
 
-  /@typescript-eslint/typescript-estree@6.12.0(typescript@5.3.2):
+  /@typescript-eslint/typescript-estree@6.12.0(typescript@5.9.3):
     resolution: {integrity: sha512-vw9E2P9+3UUWzhgjyyVczLWxZ3GuQNT7QpnIY3o5OMeLO/c8oHljGc8ZpryBMIyympiAAaKgw9e5Hl9dCWFOYw==}
     engines: {node: ^16.0.0 || >=18.0.0}
     peerDependencies:
@@ -1805,13 +1805,13 @@ packages:
       globby: 11.1.0
       is-glob: 4.0.3
       semver: 7.7.3
-      ts-api-utils: 1.0.3(typescript@5.3.2)
-      typescript: 5.3.2
+      ts-api-utils: 1.0.3(typescript@5.9.3)
+      typescript: 5.9.3
     transitivePeerDependencies:
       - supports-color
     dev: false
 
-  /@typescript-eslint/typescript-estree@6.13.1(typescript@5.3.2):
+  /@typescript-eslint/typescript-estree@6.13.1(typescript@5.9.3):
     resolution: {integrity: sha512-sBLQsvOC0Q7LGcUHO5qpG1HxRgePbT6wwqOiGLpR8uOJvPJbfs0mW3jPA3ujsDvfiVwVlWUDESNXv44KtINkUQ==}
     engines: {node: ^16.0.0 || >=18.0.0}
     peerDependencies:
@@ -1826,13 +1826,13 @@ packages:
       globby: 11.1.0
       is-glob: 4.0.3
       semver: 7.7.3
-      ts-api-utils: 1.0.3(typescript@5.3.2)
-      typescript: 5.3.2
+      ts-api-utils: 1.0.3(typescript@5.9.3)
+      typescript: 5.9.3
     transitivePeerDependencies:
       - supports-color
     dev: false
 
-  /@typescript-eslint/utils@6.12.0(eslint@8.54.0)(typescript@5.3.2):
+  /@typescript-eslint/utils@6.12.0(eslint@8.54.0)(typescript@5.9.3):
     resolution: {integrity: sha512-LywPm8h3tGEbgfyjYnu3dauZ0U7R60m+miXgKcZS8c7QALO9uWJdvNoP+duKTk2XMWc7/Q3d/QiCuLN9X6SWyQ==}
     engines: {node: ^16.0.0 || >=18.0.0}
     peerDependencies:
@@ -1843,7 +1843,7 @@ packages:
       '@types/semver': 7.5.3
       '@typescript-eslint/scope-manager': 6.12.0
       '@typescript-eslint/types': 6.12.0
-      '@typescript-eslint/typescript-estree': 6.12.0(typescript@5.3.2)
+      '@typescript-eslint/typescript-estree': 6.12.0(typescript@5.9.3)
       eslint: 8.54.0
       semver: 7.7.3
     transitivePeerDependencies:
@@ -4318,20 +4318,20 @@ packages:
     hasBin: true
     dev: true
 
-  /ts-api-utils@1.0.3(typescript@5.3.2):
+  /ts-api-utils@1.0.3(typescript@5.9.3):
     resolution: {integrity: sha512-wNMeqtMz5NtwpT/UZGY5alT+VoKdSsOOP/kqHFcUW1P/VRhH2wJ48+DN2WwUliNbQ976ETwDL0Ifd2VVvgonvg==}
     engines: {node: '>=16.13.0'}
     peerDependencies:
       typescript: '>=4.2.0'
     dependencies:
-      typescript: 5.3.2
+      typescript: 5.9.3
     dev: false
 
   /ts-interface-checker@0.1.13:
     resolution: {integrity: sha512-Y/arvbn+rrz3JCKl9C4kVNfTfSm2/mEp5FSz5EsZSANGPSlQrpRI5M4PKF+mJnE52jOO90PnPSc3Ur3bTQw0gA==}
     dev: true
 
-  /ts-jest@29.1.1(@babel/core@7.28.5)(jest@29.7.0)(typescript@5.3.2):
+  /ts-jest@29.1.1(@babel/core@7.28.5)(jest@29.7.0)(typescript@5.9.3):
     resolution: {integrity: sha512-D6xjnnbP17cC85nliwGiL+tpoKN0StpgE0TeOjXQTU6MVCfsB4v7aW05CgQ/1OywGb0x/oy9hHFnN+sczTiRaA==}
     engines: {node: ^14.15.0 || ^16.10.0 || >=18.0.0}
     hasBin: true
@@ -4361,11 +4361,11 @@ packages:
       lodash.memoize: 4.1.2
       make-error: 1.3.6
       semver: 7.5.4
-      typescript: 5.3.2
+      typescript: 5.9.3
       yargs-parser: 21.1.1
     dev: true
 
-  /tsup@8.5.1(typescript@5.3.2):
+  /tsup@8.5.1(typescript@5.9.3):
     resolution: {integrity: sha512-xtgkqwdhpKWr3tKPmCkvYmS9xnQK3m3XgxZHwSUjvfTjp7YfXe5tT3GgWi0F2N+ZSMsOeWeZFh7ZZFg5iPhing==}
     engines: {node: '>=18'}
     hasBin: true
@@ -4401,7 +4401,7 @@ packages:
       tinyexec: 0.3.2
       tinyglobby: 0.2.15
       tree-kill: 1.2.2
-      typescript: 5.3.2
+      typescript: 5.9.3
     transitivePeerDependencies:
       - jiti
       - supports-color
@@ -4556,17 +4556,17 @@ packages:
     engines: {node: '>=4.2.0'}
     hasBin: true
 
-  /typescript@5.3.2:
-    resolution: {integrity: sha512-6l+RyNy7oAHDfxC4FzSJcz9vnjTKxrLpDG5M2Vu4SHRVNg6xzqZp6LYSR9zjqQTu8DU/f5xwxUdADOkbrIX2gQ==}
-    engines: {node: '>=14.17'}
-    hasBin: true
-
   /typescript@5.6.1-rc:
     resolution: {integrity: sha512-E3b2+1zEFu84jB0YQi9BORDjz9+jGbwwy1Zi3G0LUNw7a7cePUrHMRNy8aPh53nXpkFGVHSxIZo5vKTfYaFiBQ==}
     engines: {node: '>=14.17'}
     hasBin: true
     dev: true
 
+  /typescript@5.9.3:
+    resolution: {integrity: sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==}
+    engines: {node: '>=14.17'}
+    hasBin: true
+
   /ufo@1.6.2:
     resolution: {integrity: sha512-heMioaxBcG9+Znsda5Q8sQbWnLJSl98AFDXTO80wELWEzX3hordXsTdxrIfMQoO9IY1MEnoGoPjpoKpMj+Yx0Q==}
     dev: true