diff --git a/package.json b/package.json
index 39a8a8103..06a0213dc 100644
--- a/package.json
+++ b/package.json
@@ -96,7 +96,7 @@
     "react-use-websocket": "4.13.0",
     "semver": "7.7.2",
     "sharp": "0.34.3",
-    "typescript": "5.8.3",
+    "typescript": "5.9.3",
     "use-immer": "0.11.0",
     "zod": "3.25.76"
   },
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 8226a1e9b..479471870 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -200,8 +200,8 @@ importers:
         specifier: 0.34.3
         version: 0.34.3
       typescript:
-        specifier: 5.8.3
-        version: 5.8.3
+        specifier: 5.9.3
+        version: 5.9.3
       use-immer:
         specifier: 0.11.0
         version: 0.11.0(immer@10.1.1)(react@19.1.0)
@@ -220,7 +220,7 @@ importers:
         version: 1.54.1
       '@squonk/eslint-config':
         specifier: 3.0.0
-        version: 3.0.0(@typescript-eslint/eslint-plugin@8.31.0(@typescript-eslint/parser@8.31.0(eslint@9.25.1)(typescript@5.8.3))(eslint@9.25.1)(typescript@5.8.3))
+        version: 3.0.0(@typescript-eslint/eslint-plugin@8.31.0(@typescript-eslint/parser@8.31.0(eslint@9.25.1)(typescript@5.9.3))(eslint@9.25.1)(typescript@5.9.3))
       dotenv:
         specifier: 16.6.1
         version: 16.6.1
@@ -5762,6 +5762,11 @@ packages:
     engines: {node: '>=14.17'}
     hasBin: true
 
+  typescript@5.9.3:
+    resolution: {integrity: sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==}
+    engines: {node: '>=14.17'}
+    hasBin: true
+
   ua-parser-js@0.7.39:
     resolution: {integrity: sha512-IZ6acm6RhQHNibSt7+c09hhvsKy9WUr4DVbeq9U8o71qxyYtJpQeDxQnMrVqnIFMLcQjHO0I9wgfO2vIahht4w==}
     hasBin: true
@@ -7679,7 +7684,7 @@ snapshots:
       '@tanstack/react-query': 5.83.0(react@19.1.0)
       axios: 1.10.0
 
-  '@squonk/eslint-config@3.0.0(@typescript-eslint/eslint-plugin@8.31.0(@typescript-eslint/parser@8.31.0(eslint@9.25.1)(typescript@5.8.3))(eslint@9.25.1)(typescript@5.8.3))':
+  '@squonk/eslint-config@3.0.0(@typescript-eslint/eslint-plugin@8.31.0(@typescript-eslint/parser@8.31.0(eslint@9.25.1)(typescript@5.9.3))(eslint@9.25.1)(typescript@5.9.3))':
     dependencies:
       '@eslint/eslintrc': 3.3.1
       '@eslint/js': 9.25.1
@@ -7694,7 +7699,7 @@ snapshots:
       eslint-plugin-react-hooks: 5.2.0(eslint@9.25.1)
       eslint-plugin-simple-import-sort: 12.1.1(eslint@9.25.1)
       eslint-plugin-unicorn: 58.0.0(eslint@9.25.1)
-      eslint-plugin-unused-imports: 4.1.4(@typescript-eslint/eslint-plugin@8.31.0(@typescript-eslint/parser@8.31.0(eslint@9.25.1)(typescript@5.8.3))(eslint@9.25.1)(typescript@5.8.3))(eslint@9.25.1)
+      eslint-plugin-unused-imports: 4.1.4(@typescript-eslint/eslint-plugin@8.31.0(@typescript-eslint/parser@8.31.0(eslint@9.25.1)(typescript@5.9.3))(eslint@9.25.1)(typescript@5.9.3))(eslint@9.25.1)
       typescript: 5.8.3
       typescript-eslint: 8.31.0(eslint@9.25.1)(typescript@5.8.3)
     transitivePeerDependencies:
@@ -7981,6 +7986,24 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
+  '@typescript-eslint/eslint-plugin@8.31.0(@typescript-eslint/parser@8.31.0(eslint@9.25.1)(typescript@5.9.3))(eslint@9.25.1)(typescript@5.9.3)':
+    dependencies:
+      '@eslint-community/regexpp': 4.12.1
+      '@typescript-eslint/parser': 8.31.0(eslint@9.25.1)(typescript@5.8.3)
+      '@typescript-eslint/scope-manager': 8.31.0
+      '@typescript-eslint/type-utils': 8.31.0(eslint@9.25.1)(typescript@5.9.3)
+      '@typescript-eslint/utils': 8.31.0(eslint@9.25.1)(typescript@5.9.3)
+      '@typescript-eslint/visitor-keys': 8.31.0
+      eslint: 9.25.1
+      graphemer: 1.4.0
+      ignore: 5.3.2
+      natural-compare: 1.4.0
+      ts-api-utils: 2.1.0(typescript@5.9.3)
+      typescript: 5.9.3
+    transitivePeerDependencies:
+      - supports-color
+    optional: true
+
   '@typescript-eslint/parser@8.31.0(eslint@9.25.1)(typescript@5.8.3)':
     dependencies:
       '@typescript-eslint/scope-manager': 8.31.0
@@ -8027,6 +8050,18 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
+  '@typescript-eslint/type-utils@8.31.0(eslint@9.25.1)(typescript@5.9.3)':
+    dependencies:
+      '@typescript-eslint/typescript-estree': 8.31.0(typescript@5.9.3)
+      '@typescript-eslint/utils': 8.31.0(eslint@9.25.1)(typescript@5.9.3)
+      debug: 4.4.0
+      eslint: 9.25.1
+      ts-api-utils: 2.1.0(typescript@5.9.3)
+      typescript: 5.9.3
+    transitivePeerDependencies:
+      - supports-color
+    optional: true
+
   '@typescript-eslint/types@8.31.0': {}
 
   '@typescript-eslint/types@8.33.0': {}
@@ -8045,6 +8080,21 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
+  '@typescript-eslint/typescript-estree@8.31.0(typescript@5.9.3)':
+    dependencies:
+      '@typescript-eslint/types': 8.31.0
+      '@typescript-eslint/visitor-keys': 8.31.0
+      debug: 4.4.0
+      fast-glob: 3.3.3
+      is-glob: 4.0.3
+      minimatch: 9.0.5
+      semver: 7.7.2
+      ts-api-utils: 2.1.0(typescript@5.8.3)
+      typescript: 5.9.3
+    transitivePeerDependencies:
+      - supports-color
+    optional: true
+
   '@typescript-eslint/typescript-estree@8.33.0(typescript@5.8.3)':
     dependencies:
       '@typescript-eslint/project-service': 8.33.0(typescript@5.8.3)
@@ -8072,6 +8122,18 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
+  '@typescript-eslint/utils@8.31.0(eslint@9.25.1)(typescript@5.9.3)':
+    dependencies:
+      '@eslint-community/eslint-utils': 4.6.1(eslint@9.25.1)
+      '@typescript-eslint/scope-manager': 8.31.0
+      '@typescript-eslint/types': 8.31.0
+      '@typescript-eslint/typescript-estree': 8.31.0(typescript@5.9.3)
+      eslint: 9.25.1
+      typescript: 5.9.3
+    transitivePeerDependencies:
+      - supports-color
+    optional: true
+
   '@typescript-eslint/utils@8.33.0(eslint@9.25.1)(typescript@5.8.3)':
     dependencies:
       '@eslint-community/eslint-utils': 4.7.0(eslint@9.25.1)
@@ -9441,11 +9503,11 @@ snapshots:
       semver: 7.7.2
       strip-indent: 4.0.0
 
-  eslint-plugin-unused-imports@4.1.4(@typescript-eslint/eslint-plugin@8.31.0(@typescript-eslint/parser@8.31.0(eslint@9.25.1)(typescript@5.8.3))(eslint@9.25.1)(typescript@5.8.3))(eslint@9.25.1):
+  eslint-plugin-unused-imports@4.1.4(@typescript-eslint/eslint-plugin@8.31.0(@typescript-eslint/parser@8.31.0(eslint@9.25.1)(typescript@5.9.3))(eslint@9.25.1)(typescript@5.9.3))(eslint@9.25.1):
     dependencies:
       eslint: 9.25.1
     optionalDependencies:
-      '@typescript-eslint/eslint-plugin': 8.31.0(@typescript-eslint/parser@8.31.0(eslint@9.25.1)(typescript@5.8.3))(eslint@9.25.1)(typescript@5.8.3)
+      '@typescript-eslint/eslint-plugin': 8.31.0(@typescript-eslint/parser@8.31.0(eslint@9.25.1)(typescript@5.9.3))(eslint@9.25.1)(typescript@5.9.3)
 
   eslint-scope@5.1.1:
     dependencies:
@@ -12655,6 +12717,11 @@ snapshots:
     dependencies:
       typescript: 5.8.3
 
+  ts-api-utils@2.1.0(typescript@5.9.3):
+    dependencies:
+      typescript: 5.9.3
+    optional: true
+
   tslib@2.8.1: {}
 
   type-check@0.4.0:
@@ -12733,6 +12800,8 @@ snapshots:
 
   typescript@5.8.3: {}
 
+  typescript@5.9.3: {}
+
   ua-parser-js@0.7.39: {}
 
   ua-parser-js@1.0.39: {}