diff --git a/package-lock.json b/package-lock.json
index 47be53b..7b481fa 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -22,7 +22,7 @@
         "jest": "30.1.3",
         "prettier": "3.6.2",
         "ts-jest": "29.4.3",
-        "tsx": "4.20.5",
+        "tsx": "4.20.6",
         "typescript": "5.9.2"
       }
     },
@@ -10271,9 +10271,9 @@
       "license": "0BSD"
     },
     "node_modules/tsx": {
-      "version": "4.20.5",
-      "resolved": "https://registry.npmjs.org/tsx/-/tsx-4.20.5.tgz",
-      "integrity": "sha512-+wKjMNU9w/EaQayHXb7WA7ZaHY6hN8WgfvHNQ3t1PnU91/7O8TcTnIhCDYTZwnt8JsO9IBqZ30Ln1r7pPF52Aw==",
+      "version": "4.20.6",
+      "resolved": "https://registry.npmjs.org/tsx/-/tsx-4.20.6.tgz",
+      "integrity": "sha512-ytQKuwgmrrkDTFP4LjR0ToE2nqgy886GpvRSpU0JAnrdBYppuY5rLkRUYPU1yCryb24SsKBTL/hlDQAEFVwtZg==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
diff --git a/package.json b/package.json
index 715c8fe..24feb90 100644
--- a/package.json
+++ b/package.json
@@ -23,7 +23,7 @@
     "jest": "30.1.3",
     "prettier": "3.6.2",
     "ts-jest": "29.4.3",
-    "tsx": "4.20.5",
+    "tsx": "4.20.6",
     "typescript": "5.9.2"
   },
   "prettier": "@guardian/prettier"