diff --git a/package-lock.json b/package-lock.json
index 54f72ee..4ed6b9f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -22,7 +22,7 @@
         "jest": "29.7.0",
         "prettier": "3.5.2",
         "ts-jest": "29.3.1",
-        "tsx": "4.19.3",
+        "tsx": "4.19.4",
         "typescript": "5.5.4"
       }
     },
@@ -8169,9 +8169,9 @@
       "dev": true
     },
     "node_modules/tsx": {
-      "version": "4.19.3",
-      "resolved": "https://registry.npmjs.org/tsx/-/tsx-4.19.3.tgz",
-      "integrity": "sha512-4H8vUNGNjQ4V2EOoGw005+c+dGuPSnhpPBPHBtsZdGZBk/iJb4kguGlPWaZTZ3q5nMtFOEsY0nRDlh9PJyd6SQ==",
+      "version": "4.19.4",
+      "resolved": "https://registry.npmjs.org/tsx/-/tsx-4.19.4.tgz",
+      "integrity": "sha512-gK5GVzDkJK1SI1zwHf32Mqxf2tSJkNx+eYcNly5+nHvWqXUJYUkWBQtKauoESz3ymezAI++ZwT855x5p5eop+Q==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
diff --git a/package.json b/package.json
index b58ebf5..c1b11e8 100644
--- a/package.json
+++ b/package.json
@@ -23,7 +23,7 @@
     "jest": "29.7.0",
     "prettier": "3.5.2",
     "ts-jest": "29.3.1",
-    "tsx": "4.19.3",
+    "tsx": "4.19.4",
     "typescript": "5.5.4"
   },
   "prettier": "@guardian/prettier",