diff --git a/.github/infrastructure.yml b/.github/infrastructure.yml
index c4405530..3945f674 100644
--- a/.github/infrastructure.yml
+++ b/.github/infrastructure.yml
@@ -34,6 +34,7 @@ branches:
           - context: spelling
           - context: typescript (5.3.3)
           - context: typescript (5.4.5)
+          - context: typescript (5.5.3)
           - context: typescript (latest)
         strict: true
       restrictions: null
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 93744f29..d20998d2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -245,6 +245,7 @@ jobs:
       matrix:
         typescript-version:
           - ${{ needs.preflight.outputs.version-typescript }}
+          - 5.4.5
           - 5.3.3
           - latest
     steps:
diff --git a/package.json b/package.json
index 95407e19..e1341f4a 100644
--- a/package.json
+++ b/package.json
@@ -125,7 +125,7 @@
     "sh-syntax": "0.4.2",
     "trash-cli": "5.0.0",
     "ts-dedent": "2.2.0",
-    "typescript": "5.4.5",
+    "typescript": "5.5.3",
     "vite": "5.3.2",
     "vitest": "1.6.0",
     "yaml-eslint-parser": "1.2.3"
diff --git a/yarn.lock b/yarn.lock
index 53aaf862..6056d8c8 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1481,7 +1481,7 @@ __metadata:
     sh-syntax: "npm:0.4.2"
     trash-cli: "npm:5.0.0"
     ts-dedent: "npm:2.2.0"
-    typescript: "npm:5.4.5"
+    typescript: "npm:5.5.3"
     vite: "npm:5.3.2"
     vitest: "npm:1.6.0"
     yaml-eslint-parser: "npm:1.2.3"
@@ -9797,13 +9797,13 @@ __metadata:
   languageName: node
   linkType: hard
 
-"typescript@npm:5.4.5":
-  version: 5.4.5
-  resolution: "typescript@npm:5.4.5"
+"typescript@npm:5.5.3":
+  version: 5.5.3
+  resolution: "typescript@npm:5.5.3"
   bin:
     tsc: bin/tsc
     tsserver: bin/tsserver
-  checksum: 10/d04a9e27e6d83861f2126665aa8d84847e8ebabcea9125b9ebc30370b98cb38b5dff2508d74e2326a744938191a83a69aa9fddab41f193ffa43eabfdf3f190a5
+  checksum: 10/11a867312419ed497929aafd2f1d28b2cd41810a5eb6c6e9e169559112e9ea073d681c121a29102e67cd4478d0a4ae37a306a5800f3717f59c4337e6a9bd5e8d
   languageName: node
   linkType: hard
 
@@ -9817,13 +9817,13 @@ __metadata:
   languageName: node
   linkType: hard
 
-"typescript@patch:typescript@npm%3A5.4.5#optional!builtin<compat/typescript>":
-  version: 5.4.5
-  resolution: "typescript@patch:typescript@npm%3A5.4.5#optional!builtin<compat/typescript>::version=5.4.5&hash=d69c25"
+"typescript@patch:typescript@npm%3A5.5.3#optional!builtin<compat/typescript>":
+  version: 5.5.3
+  resolution: "typescript@patch:typescript@npm%3A5.5.3#optional!builtin<compat/typescript>::version=5.5.3&hash=d69c25"
   bin:
     tsc: bin/tsc
     tsserver: bin/tsserver
-  checksum: 10/584be8bac7112ad49a9eb9992f71d542b1ff2fafb5bb315e1c196145e8feab589f1d7223cfb2d5df6770789582e6918f8287d1f2f89911b38eb80e29c560ad00
+  checksum: 10/b61b8bb4b4d6a8a00f9d5f931f8c67070eed6ad11feabf4c41744a326987080bfc806a621596c70fbf2e5974eca3ed65bafeeeb22a078071bdfb51d8abd7c013
   languageName: node
   linkType: hard